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1

관광경영학회 관광경영연구 제18권 제4호 통권 62호 2014.12 pp.559-579

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5,700원

2

21세기영어영문학회 21세기영어영문학회 학술대회 2007년 봄 학술발표회 2007.03 pp.9-17

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3

관광경영학회 관광경영연구 제22권 제3호 통권 82호 2018.05 pp.1075-1096

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The purpose of this study is to investigate the effects of overseas travel experience factors on travel satisfaction and psychological well-being. The subjects of this empirical study were college students who had overseas travel experience in the last one year. The convenience sampling was used for the sampling method. We conducted a 20-day survey from September 1, 2017 to September 20, 2017 to investigate college student. Among the collected questionnaires, 212 valid samples were used, except for 37 cases with inappropriate responses. For the analysis of the date, frequency analysis, reliability analysis, factor analysis and multiple regression analysis were performed using SPSS version 20.0. The results of the hypothesis test are as follows. First, the three overseas travel experience factors (entertainment experience, escape experience, and education experience) were found to have positive effects on travel satisfaction. Second, the entertainment experience factor, the escape experience factor, and the educational experience factor of the overseas travel experience were found to have the strongest effects on competence out of psychological well-being. In addition, the escape experience and the education experience had significant effects on euphoria, the entertainment experience had significant effects on pleasure, and the education experience had significant effects on influence on bonds. Third, travel satisfaction was identified to have significant effects on competence, euphoria, and pleasure out of psychological well-being. In particular, out of psychological well-being, 'competence' was shown to play the most important role for travel satisfaction. The results of this study can be utilized as practical basic data for travel marketing.

5,800원

4

관광경영학회 관광경영연구 제20권 제6호 통권 73호 2016.11 pp.601-622

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This study aims to find out the influence of participation constraints of popular music festival participants on constraints negotiation and the influence of constraints and negotiation on participation intention. Based on previous studies, constraint factors and negotiation factors were deduced and an empirical research was conducted targeting S Rock Festival. The analysis of 226 valid samples deduced as constraint factors of popular music festival participants, intrapersonal constraint, structural constraint, and interpersonal constraint, and as negotiation factors, improving finance, time management, structural improvements, and changing interpersonal relations. The result of the study was as follows. First, among constraint factors of popular music festival participants, intrapersonal constraint had a negative effect on changing interpersonal relations and structural improvement among negotiation factors. On the other hand, structural constraint and interpersonal constraint had no significant effect on negotiation factors. Second, among negotiation factors, structural improvement and interpersonal relations had a positive influence on participation intention. improving finance and time management did not have significant effect on participation intention. Third, among constraint factors, intrapersonal constraint and interpersonal constraint had a negative influence on participation intention, while structural constraint had no significant influence on participation intention. These results will serve as base data to systematically understand the behaviors of popular music festival participants.

5,800원

5

관광경영학회 관광경영연구 제19권 제4호 통권 66호 2015.09 pp.203-224

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The purpose of this study was to verify the effect relationship between the consumption value, performing event preferences, and performing event product attributes of university students. Main analysis results showed that performing event consumption value reflected individuality value, social value, epistemic value, emotional value, and functional value, and performing event product attributes reflected core product attributes, actual product attributes, augmented product attributes, and core/actual product attributes. Hypothesis testing results showed that, first, individuality value had a negative effect on classic preferences but social value had a positive effect. Social value had a negative effect on musical preferences but functional value had a positive effect. Epistemic value, emotional value, and functional value had positive effects on play preferences but identity value and social value had negative effects, and while individuality value and emotional value had a positive effect on popular music preferences, social value had a negative effect. Second, after verifying effects between consumption value and performing event product attributes, it was found that while individuality value and emotional value had a positive effect on performing event core product attributes, social value and functional value had a negative effect. Social value had a positive effect on augmented product attributes and individuality value had a negative effect on actual product attributes and core actual product attributes. Emotional value had a positive effect on actual product attributes and core actual product attributes and functional value had a positive effect on core actual product attributes. The results of this study will aid university students in their audience development if used as baseline data when establishing performing event marketing strategies and product planning.

5,800원

6

관광경영학회 관광경영연구 제22권 제5호 통권 84호 2018.09 pp.741-763

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The purpose of this study is to investigate the effects of popular music festival experiential factors on subjective well being and festival satisfaction, and analyze the effect of popular music festival satisfaction on subjective well being. In order to achieve the purpose of the study, previous studies that applied the experience economy theory of Pine and Gilmore(1998) were reviewed and questionnaire surveys were conducted with participants of the Incheon Pentaport Rock Festival. From the surveys, 237 valid samples were secured and an empirical analysis was conducted with the samples. The results of this study are as follows. First, the entertainment experiential factors, educational experiential factors, escapist experiential factors, and esthetic experiential factors of popular music festivals had statistically significant effects on festival satisfaction. Second, the educational experiential factors and esthetic experiential factors of popular music festivals had significant effects on subjective well being. However, the entertainment experiential factors and escapist experiential factors did not significantly affect subjective well being. Third, the popular music festival satisfaction had significant effects on subjective well being. Therefore, the importance of experiential factors as a strategy to enhance the feeling of welling being and satisfaction of participants in the popular music festivals could be identified. In addition, the application optimal experiential factors (the optimal experience) to the planning, operating and marketing of the popular music festivals will contribute to strengthening the competitiveness of the festivals.

6,000원

7

동북아관광학회 동북아관광연구 제9권 제4호 통권23호 2013.11 pp.171-188

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본 연구는 외래관광객 유치목적으로 개최되고 있는 K-POP 공연이벤트에 참가한 한중일 관광객의 공연이벤트 매력속성에 따른 전체 만족도와 행동의도의 영향관계를 도출하여 관광마케팅 시사점을 제시하는데 그 목적이 있다. 실증분석을 위하여 2010 년부터 외래관광객 유치도모를 위하여 개최되고 있는 경주한류드림페스티벌의 참가한 한·중·일 관광객을 대상으로 설문조사를 실시하여 유효표본 499부를 확보하였다. 연구결과, 한·중·일 관광객의 K-POP 공연이벤트 매력속성으로 관광상품, 행사내 용, 홍보안내, 편의시설 등 총 4개의 요인이 도출되었다. 한·일 관광객의 공연이벤트 4개의 매력속성이 전반적 만족도에 영향을 미치는 것으로 확인되었으나, 중국관광객 은 홍보안내 속성을 제외한 나머지 매력속성은 전체 만족도에 영향을 미치는 것으로 분석되었다. 또한 한·중·일 관광객의 공연이벤트 매력속성은 행동의도에 영향을 미 치며, 전체 만족도는 행동의도에 영향을 미치는 것으로 나타났다. 한·중·일 관광객 은 공연이벤트의 ‘행사내용’을 가장 중요한 매력속성으로 인식하고 있으며, 전체 만족 도와 행동의도에 상대적으로 많은 영향을 미치는 것으로 확인되었다. 본 연구를 통하여 외국인 관광객을 유인하고 지속적으로 재방문율을 높이기 위하여 공연이벤트의 매력속성을 파악하고 만족도와 행동의도에 영향을 미치는 속성을 지속 적으로 관리의 필요성을 파악하였다. 공연이벤트의 매력속성 중에서 행사내용을 충실 히 차별화 전략이 필요하며, 외국인 관광객의 국적별 특성을 파악하여 차별화된 마케 팅 활동을 전개해야 만족도와 재방문율을 높일 수 있을 것이다.
The purpose of this study is to suggest implications of tourism marketing by eliciting influential relationship between the whole satisfaction and behavioral intention according to the attractiveness of the performing event in South Korean, Chinese and Japanese tourists who participated in K-POP performing event that is being opened with the aim of inviting foreign tourists. The collected valid sampling of 499 people was applied to analysis targeting South Korean, Chinese and Japanese tourists who participated in 2012 Gyeongju Hallyu Dream Festival. As a result of research, totally 4 factors in tourism product, event contents, publicity information, and convenient facilities were elicited as the attractiveness of K-POP performing event. Four attractiveness attributes of the performing event in South Korean and Japanese tourists were confirmed to have influence upon the whole satisfaction. However, the remaining attractiveness attributes except the publicity information attribute in Chinese tourists were analyzed to have influence upon the whole satisfaction. Also, it was indicated that the performing event attractiveness in South Korean, Chinese and Japanese tourists has influence upon behavioral intention and that the whole satisfaction has influence upon behavioral intention. South Korean, Chinese and Japanese tourists were recognizing 'event contents' of the performing event as the most important attractiveness. And it was confirmed to have relatively great influence upon the whole satisfaction and behavioral intention. Through this study, there is a need of grasping the attractiveness of the performing event and of continuously managing the attribute of having influence upon satisfaction and behavioral intention in order to invite foreign tourists and to continuously increase re-visit rate.

8

어패럴 패턴캐드 간 패턴 제도 기능 비교 - 스커트 곡선 허리밴드와 소매 진동곡선 생성 과정을 중심으로 -

[Kisti 연계] 한국의류산업학회 한국의류산업학회지 Vol.20 No.6 2018 pp.690-703

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

The purpose of this study is to help user understand the basic principles and interfaces of each program, and to provide a base material for the development of more efficient apparel CAD systems to compensate for each program's shortcomings by comparing the function of three apparel CAD systems: Yuka CAD, Opti-tex, and Style CAD. For this purpose, the skirt waistband and sleeve armhole line creation process were selected based on these two criteria. 1) There is a big difference between principle and method between CAD systems. 2) When CAD system is used rather than paper drawing process, the process is shortened and convenience is high. In this study, pros and cons and supplement point of each CAD system are suggested by comparing the functions of the CAD system performing the selected drafting process by four criteria: icon, key, method, and characteristic point. As a result of the study, it was confirmed that the three CAD systems differ in the basic principle and interface environment. As a result of analyzing the skirt waistband method function, it was confirmed that the band line is formed directly on the outline of the skirt and the band dart recognition function is the most efficient function and as a result of the analyzing the sleeve armhole line method function, it was confirmed that the curve generation function using the shape of the actual curve measure and the length adjustment function through the automation of the dimension calculation is the most efficient function.

9

한국 성인 여성의 연령대별 체형변화에 대한 연구

[Kisti 연계] 한국의류산업학회 한국의류산업학회지 Vol.19 No.1 2017 pp.49-60

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

In this study, change trends and specific times for change in body size were sought to be identified by using manual measurements for Korean adult women at 20 to 89 of age, along with examinations of change trends and specific times of change in body shape based on body index values. The examinations of means, deviations, and variation coefficients revealed that there was a tendency of most height related measures to decrease. In addition, combined with decrease in height, growth in weight led to increased BMI, thus resulting in increase in measures of circumference, thickness, and breadth in the torso area. The BMI trends showed that with increasing age, BMI increased, reaching the peak between the ages of 55 and 59 and then decreasing from 64 of age, with the steepest increase in BMI at ages from 50 to 54. The examination of differences in the body flatness ratio for different parts of body found that with increasing age the ratio decreased, indicating a tendency for gradual change to round body shapes. The analysis of 3D body shape found that there were more back-bends and lowered shoulder levels with age, accompanied with a tendency for more bended legs and more inclined-forward necks. The key trends in changes in body measurements by age and detailed estimates of 3D standard body shape drawn out from this study are expected to significantly contribute to establishing a basic database for generating patterns reflecting age features of Korean adult females.

10

한국 남자 군인 현 방한복의 치수, 동작적합성 만족도에 관한 연구

[Kisti 연계] 한국의류산업학회 한국의류산업학회지 Vol.18 No.5 2016 pp.685-694

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

This study investigates the problems of fitness and motion suitability for Korean male military winter jackets (inner and outer) and provides data for new pattern development. We analyzed fitness and motion suitability by a questionnaire survey with 140 Korean male soldiers and a wearing evaluation with 7 subjects of central army male size. A survey of male soldiers indicated that the fitness and motion suitability satisfaction was over 3.0 (Likert scale) for both inner and outer jackets. There were opinions that the sleeve length was short for the inner jacket and the waist girth and hem girth was slightly large for the outer jacket. In the wearing evaluation results with subjects of central army male size, fitness of total length, sleeve length and collar height showed a score lower than 3.0 for the inner jacket and collar height on the outer jacket. The motion suitability result showed a low score (1.0-2.0) in an arm raising motion for the inner jacket and 2.0-3.0 at neck motion in the outer jacket. In conclusion, there is more dissatisfaction in inner jackets than outer jackets. For the inner jacket, sleeve is short, sleeve hem is narrow, collar height is a little high and the sleeve creeps up during arm motion. The waist girth and hem girth was slightly large and collar height was a little high for the outer jacket.

11

적외선 램프를 이용하여 소결한 구리 나노잉크의 전기적 특성 평가에 관한 연구

[Kisti 연계] 한국재료학회 한국재료학회지 Vol.26 No.4 2016 pp.216-221

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

A sintering process for copper based films using a rapid thermal process with infrared lamps is proposed to improve the electrical properties. Compared with films produced by conventional thermal sintering, the microstructure of the copper based films contained fewer internal and interfacial pores and larger grains after the rapid thermal process. This high-density microstructure is due to the high heating rate, which causes the abrupt decomposition of the organic shell at higher temperatures than is the case for the low heating rate; the high heating rate also induces densification of the copper based films. In order to confirm the effect of the rapid thermal process on copper nanoink, copper based films were prepared under varying of conditions such as the sintering temperature, time, and heating rate. As a result, the resistivity of the copper based films showed no significant changes at high temperature ($300^{\circ}C$) according to the sintering conditions. On the other hand, at low temperatures, the resistivity of the copper based films depended on the heating rate of the rapid thermal process.

12

한국 남자 군인 방한복의 신 치수체계 개발

[Kisti 연계] 한국의류학회 한국의류학회지 Vol.40 No.5 2016 pp.954-965

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

This study was designed to help develop an optimized sizing system for the military winter jackets of Korean males. First, we conducted a survey on the supply rate of military winter jackets and the wearing of suitable size jackets in order to identify problems in the current sizing system. We next developed a new sizing system generation method to satisfy the coverage rate and appropriate size number: Hybrid of Grid with Optimization. The findings of this study were: 1. The survey indicated that a 90 (chest girth) size is necessary; in addition, a one-step large size jacket fit well as a right size jacket. 2. We developed three optimized sizing systems for Korean male military winter jackets using the Hybrid of Grid with an optimization method and suggested one of them as a final new sizing system. The new sizing system consisted of two primary dimension: chest girth and stature. It has a 14 size number and its extended coverage rate is larger than the current sizing system and it has a 90 (chest girth) size. It also selected an optimized size for the area of low population density. The new sizing system is therefore considered very effective for Korean male soldiers military winter jackets.

13

바코팅 공정을 이용한 유기 발광 다이오드 특성 향상

[Kisti 연계] 한국정밀공학회 한국정밀공학회지 Vol.30 No.6 2013 pp.589-595

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

Solution processed conjugated molecules enable to manufacture various electronic devices by unconventional and cost effective patterning methods as screen or gravure printing. Spin-coating is the most popularly used method to form conjugated polymeric film for various electronic devices. The coating method has certain disadvantages such as a large amount of unwanted wastes, difficulty forming a film with a large area, and impossible to apply roll-to-roll manufacturing. We present here a promising alternative coating method, bar-coating for conjugated polymer film and OLED with the bar coated light emitting layer. In this papers, we show atomic force microscope images of spin- and bar-coated Poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)] (F8BT) films on substrate. The bar-coated film showed a slight lower RMS roughness (1.058 [nm]) than spin-coated film (1.767 [nm]). It means the bar-coating is suitable method to form light emitting layers in OLEDs. By using bar-coating process, an OLED obtained with 4.7 [cd/A] in maximum current efficiency.

14

PVP(polyvinylpyrrolidone)가 리버스 오프셋용 은 나노 잉크 물성에 미치는 영향

[Kisti 연계] 한국재료학회 한국재료학회지 Vol.22 No.9 2012 pp.476-481

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

Among the various roll-to-roll printing technologies such as gravure, gravure-offset, and reverse offset printing, reverse offset printing has the advantage of fine patterning, with less than 5 ${\mu}m$ line width. However, it involves complex processes, consisting of 1) the coating process, 2) the off process, 3) the patterning process, and 4) the set process of the ink. Each process demands various ink properties, including viscosity, surface tension, stickiness, and adhesion with substrate or clich$\acute{e}$; these properties are critical factors for the printing quality of fine patterning. In this study, Ag nano ink was developed for reverse offset printing and the effect of polyvinylpyrrolidone(PVP), used as a capping agent of Ag nano particles, on the printing quality was investigated. Ag nano particles with a diameter of ~60 nm were synthesized using the conventional polyol synthesis process. Ethanol and ethylene glycol monopropyl ether(EGPE) were used together as the main solvent in order to control the drying and absorption of the solvents during the printing process. The rheological behavior, especially ink adhesion and stickiness, was controlled with washing processes that have an effect on the offset process and that played a critical role in the fine patterning. The electrical and thermal behaviors were analyzed according to the content of PVP in the Ag ink. Finally, an Ag mesh pattern with a line width of 10 ${\mu}m$ was printed using reverse offset printing; this printing showed an electrical resistivity of 36 ${\mu}{\Omega}{\cdot}cm$ after sintering at $200^{\circ}C$.

15

롤 옵셋 인쇄 공정 메커니즘

[Kisti 연계] 한국재료학회 한국재료학회 학술대회논문집 2012 p.66

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

프린팅공정을 이용한 패터닝 기술은 디스플레이, 태양전지, RFID 등 다양한 분야에서 각광을 받고 있다. 프린팅공정은 대면적 패터닝 공정이 가능하며, 다단계 공정인 Litho보다 공정이 단순하다는 장점이 있지만, 현재까지 원하는 크기와 두께의 패턴구현이 쉽지 않다는 단점이 있다. 프린팅 공정을 전자소자의 패터닝 기술로 사용하기 위해서는, 다양한 선폭과 선 두께를 자유자재로 구현하는 것이 가능해야 한다. 또한 미세한 선폭을 인쇄할 수 있을 수록 더 미세한 전자소자 또는 디스플레이 소자를 만들어 낼 수 있으며, 박막을 구현하는 것은 유기소자를 인쇄방식으로 하기 위해서는 필수적이다. 본 논문은 이러한 정밀한 패터닝이 가능한 롤 인쇄 공정의 기본 메커니즘을 설명하고 이를 이용한 미세 박막 인쇄 공정을 실험을 통해 검증하였다.

16

3차원 인체 형상의 공극거리 측정 방법 효율성 향상을 위한 연구

[Kisti 연계] 한국의류산업학회 한국의류산업학회지 Vol.13 No.6 2011 pp.966-971

협약을 통해 무료로 제공되는 자료로, 원문이용 방식은 연계기관의 정책을 따르고 있습니다.

This study is designed to develop programs that analyze the distance of clothes from human skin and cross-sectional body figures based on 3D human body scan data, and to verify accuracy and efficiency of the program so that it can be used for clothing fit evaluation and 3D human body research. The auto cross-sectional imaging program was developed by using Visual C++ and OpenGL, and the 3D human body scan data were adopted to measure the space between skin and clothing. The space measurements were obtained by two widely used programs, RapidForm and AutoCAD, and a program devised by the researchers of this study. Measuring time and space measurements from different programs were compared in order to verify accuracy and efficiency of the newly-devised program. As a result, no significant difference was found in the measurements. However, the required time to measure one cross section was different within the significance level of 0.05, and the differences become more remarkable as the number of measuring and the angle of space between skin and clothing increase. Therefore, the program developed by this study is expected to be useful for research on body shapes and fit evaluation based on 3D human body scan data in the fashion field.

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Interactive 3D Pattern Design Using Real-time Pattern Deformation and Relative Human Body Coordinate System

[Kisti 연계] 한국의류산업학회 한국의류산업학회지 Vol.12 No.5 2010 pp.582-590

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Garment design needs an iterative manipulation of 2D patterns to generate a final sloper. Traditionally there have been two kinds of design methodologies such as the flat pattern method and the pattern draping method. But today, it is possible to combine the advantages from the two methods due to the realistic cloth simulation techniques. We devised a new garment design system which starts from 3D initial drape simulation result and then modifies the garment by editing the 2D flat patterns synchronously. With this interactive methodology using real-time pattern deformation technique, the designer can freely change a pattern shape by watching its 3D outlook in real-time. Also the final garment data were given relative coordinates with respect to the human anthropometric feature points detected by an automatic body feature detection algorithm. Using the relative human body coordinate system, the final garments can be re-used to an arbitrary body data without repositioning in the drape simulation. A female shirt was used for an example and a 3D body scan data was used for an illustration of the feature point detection algorithm.

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3차원 스캔측정치와 직접치수간 차이의 성별 비교 -제5차 Size Korea 성인데이터를 대상으로-

[Kisti 연계] 한국의류학회 한국의류학회지 Vol.33 No.8 2009 pp.1190-1202

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A 3D body scan measurement (SM) is used as an alternative to physical measurements (PM) as the information for designing industrial products. This study compared the mean difference (MD) between SM and PM by gender and analyzed the causes of the difference. The data used in this study were the scan measurements and physical measurements of adults aged twenty to seventy years old of the fifth Size Korea survey. The results of this study are as follows: 1. The comparison of MD between men and women for all subjects: The measurement of the significant differences between men and women were height, neck base girth, chest girth, under-bust girth, waist girth, armscye girth, back length, and foot length. The causes of difference are the difference of body shape. 2. The comparison of MD between men and women by BMI groups: Many measurements had significant differences between men and women at normal weight and overweight but underweight. Some measurements had significant differences only at a specific BMI group because the body shape difference between men and women is revealed clearly in the group. The comparison of MD between men and women by age groups: The measurements that show significant difference at more than four age groups were neck girth, chest girth, under-bust girth, waist girth, armscye girth, and foot length. The height and abdomen girth had a significant difference in the age range of 20's and 30's. There were measurements that increase MD with an increase in age; under-bust girth and lateral shoulder length for women and lateral shoulder length for men. This comparison of MD between men and women provide the correct guidelines for the use of SM.

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고온 열처리 공정이 탄화규소 쇼트키 다이오드 특성에 미치는 영향

[Kisti 연계] 한국전기전자재료학회 전기전자재료학회논문지 Vol.19 No.9 2006 pp.818-824

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The effects of high-temperature process required to fabricate the SiC devices on the surface morphology and the electrical characteristics were investigated for 4H-SiC Schottky diodes. The 4H-SiC diodes without a graphite cap layer as a protection layer showed catastrophic increase in an excess current at a forward bias and a leakage current at a reverse bias after high-temperature annealing process. Moreover it seemed to deviate from the conventional Schottky characteristics and to operate as an ohmic contact at the low bias regime. However, the 4H-SiC diodes with the graphite cap still exhibited their good electrical characteristics in spite of a slight increase in the leakage current. Therefore, we found that the graphite cap layer serves well as the protection layer of silicon carbide surface during high-temperature annealing. Based on a closer analysis on electric characteristics, a conductive surface transfiguration layer was suspected to form on the surface of diodes without the graphite cap layer during high-temperature annealing. After removing the surface transfiguration layer using ICP-RIE, Schottky diode without the graphite cap layer and having poor electrical characteristics showed a dramatic improvement in its characteristics including the ideality factor[${\eta}$] of 1.23, the schottky barrier height[${\Phi}$] of 1.39 eV, and the leakage current of $7.75\{times}10^{-8}\;A/cm^{2}$ at the reverse bias of -10 V.

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Hot-wall CVD에서의 SiC 단결정 박막의 초기 성장 거동

[Kisti 연계] 한국전기전자재료학회 한국전기전자재료학회 학술대회논문집 2005 pp.174-175

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Initial growth stage was investigated for SiC homoepitaxial film growth using 'step controlled epitaxy' technique. When the off angel direction is located parallel along to the gas flow direction, the smoother surface can be obtained. On the on axis substrates, selective etching was detected both the etching and growth condition. It was deduced that the high ratio of C/Si in the source gas results in well developed steps and etched spiral around micropipes.

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