RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Electronic band transitions in γ-Ge3N4

        Eduard Feldbach,Andreas Zerr,Luc Museur,Mamoru Kitaura,Geeth Manthilake,Franck Tessier,Veera Krasnenko,Andrei Kanaev 대한금속·재료학회 2021 ELECTRONIC MATERIALS LETTERS Vol.17 No.4

        Electronic band structure in germanium nitride having spinel structure, γ-Ge 3 N 4 , was examined using two spectroscopictechniques, cathodoluminescence and synchrotron-based photoluminescence. The sample purity was confi rmed by x-raydiff raction and Raman analyses. The spectroscopic measurements provided fi rst experimental evidence of a large free excitonbinding energy D e ≈0.30 eV and direct interband transitions in this material. The band gap energy E g = 3.65 ± 0.05 eVmeasured with a higher precision was in agreement with that previously obtained via XES/XANES method. The screenedhybrid functional Heyd–Scuseria–Ernzerhof (HSE06) calculations of the electronic structure supported the experimentalresults. Based on the experimental data and theoretical calculations, the limiting effi ciency of the excitation conversion tolight was estimated and compared with that of w-GaN, which is the basic material of commercial light emitting diodes. Thehigh conversion effi ciency, very high hardness and rigidity combined with a thermal stability in air up to ~ 700 °C reveal thepotential of γ-Ge 3 N 4 for robust and effi cient photonic emitters.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼