Earticle

초록

영어

We studied on the visible emission of Cu-ion-doped perovskite hafnate SrHfO3 (SHO:Cu) with the photo-excitation energy dependence. The polycrystalline SHO:Cu samples were newly synthesized in the solid state reaction method. From the X-ray diffraction measurement it was found that the crystalline structure of SHO:Cu is nearly identical to that of undoped SrHfO3. Interestingly, the photoluminescence excitation (PLE) spectra change significantly with the emission energy, which is linked to the strong dependence of the visible emission on the photo-excitation energy. This unusual emission behavior is likely to be associated with the mixed valence states of the doped Cu ions, which were revealed by X-ray photoelectron spectroscopy. We compared our finding of tunable visible emission in the SHO:Cu compounds with the cases of similar materials, SrTiO3 and SrZrO3 with Cu-ion-doping.

목차

Abstract
 1. INTRODUCTION
 2. EXPERIMENT
 3. RESULTS AND DISCUSSION
  3.1 Structural Property
  3.2 X-ray Photoelectron Spectroscopy Analysis
  3.3 Photoluminescence Excitation Spectra
  3.4. Photoluminescence spectra
  3.5 Comparison with SrTiO3
 4. SUMMARY
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• D. J. Lee [ Soongnsil University, Seoul, Korea ]
• Y. S. Lee [ Soongnsil University, Seoul, Korea ] Corresponding author
• H. J. Noh [ Chonnam National University, Gwangju, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537