콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Impacts of cation ordering on bandgap dispersion of double perovskites
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2018-08
- 저자명 Seung-Cheol Lee,Mahesh Chandran,Hyungjun Kim,Jongseob Kim,Sang Hyuk Im,홍기하공동(교신)
- 학술지명 APL MATERIALS
- 발행처명 AMER INST PHYSICS
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
논문 초록 (Abstract)
Double perovskites using dual metal cations are promising candidates for Pb-free perovskites. This study shows that the electronic structures of double perovskites (A2B+B3+X6) can be significantly modulated by cation ordering changes. The bandgap of Cs2AgBiCl6 can be affected by changing octahedron alignments, and even zero gap states can be realized for the 2-dimensional BiCl6 (AgCl6) configuration. It is presented that different types of B+/B3+-site orderings in double perovskites could be the origin of bandgap dispersion. Comparative studies on the various compositions show that, among B+/B3+ cations, Tl/Bi could be promising for the suppression of ordering variation.
