- 수직 Bridgman 방법으로 성장된 CdTe {111} 면의 결정학과 광발광 특성
- ㆍ 저자명
- 정태수,박은옥,유평렬,김택성,이훈,신영진,홍광준
- ㆍ 간행물명
- 韓國眞空學會誌
- ㆍ 권/호정보
- 1999년|8권 |pp.297-301 (5 pages)
- ㆍ 발행정보
- 한국진공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
High quality CdTe single crystal for the solar cell fabrication was grown by vertical Bridgman method. The etch pits patterns of {111} surfaces of CdTe etched by Nakagawa solution was observed the {11} A composed of Cd atoms with typical triangle etch pits of pyramid mode. From the photoluminescence measurement of {111} A, we observed free exciton $(E_x)$ existing only high quality crystal and neutral acceptor bound exciton ($A^{circ}$, X) having very strong peak intensity. Then, the full width at half maximum and binding energy of neutral acceptor bound exciton were 7 meV and 5.9 meV, respectively. By Haynes rule, and activation energy of impurity was 59meV. Therefore, the origins on impurity level acting as a neutral acceptor were associated Ag or Cu elements.