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제125회 대한화학회 학술발표회 및 총회 Low-toxicity lead-free CsSnBr3 perovskite Nanowires

등록일
2020년 2월 6일 14시 49분 14초
접수번호
0943
발표코드
MAT.P-814 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
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발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Jong Hyun Lee, In Hye Kwak1, Ik Seon Kwon2, Doyeon Kim2, Jaemin Seo3, Jeunghee Park3,*
Department of Materials Chemistry, Advanced Materials Chemistry, Korea
1Micro Device Engineering / Microdevices, Korea University, Korea
2Advanced Materials Chemistry, Korea University, Korea
3Department of Materials Chemistry, Korea University, Korea
The optical and electrical properties of Pb-based perovskites look almost perfect for solar cells. The latest efficiency of perovskite solar cells reached almost 25%, The presence of Pb, however, has caused some concerns due to the high perceived toxicity of Pb, which may slow down or even hinder the pace of commercialization. Therefore, the science community has been searching for lower-toxicity perovskite-type materials as a back-up strategy. Sn-based perovskites have attracted the most attention due to their very similar properties, and the most promising performance achieved by their devices. In this work, we synthesized single-crystalline CsPbBr3 and CsSnBr3 nanowires using chemical vapor transport method and compared the optical/electrical properties. We fabricated photodetectors using the individual nanowire, showing that the Sn composition significantly diminished the photocurrent and reduced the stability.

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