期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202214161
关键词
Circularly Polarized Light (CPL); Perovskites; Spin-Photovoltaic Effect; Spin-Polarization; Spin-Selectivity
资金
- JC Bose National Fellowship of SERB [JBR/2021/000001, CRG/2018/000183]
- SERB
- Asian Office of Aerospace Research and Development (AOARD)
- DST INSPIRE Fellowship [IF170922]
A pair of zero-dimensional lead-free chiral perovskites is introduced for the detection of circularly polarized light (CPL). Due to the intrinsic chirality, these perovskites exhibit chirality-induced spin-selectivity, making them suitable for CPL detection. Although the self-powered CPL detector shows a limited anisotropy factor, the factor increases under bias.
A pair of zero-dimensional lead-free chiral perovskites is introduced towards the detection of circularly polarized light (CPL). Although spin-polarized carriers are generated in the perovskites under the CPL, the absorption anisotropy remained low leading to mostly similar density of photo-generated carriers under the two CPLs. Interestingly, due to the intrinsic chirality in the perovskites, they exhibited chirality-induced spin-selectivity (CISS) allowing the transport of only one type of spin-half states. A high anisotropy in photocurrent along the out-of-plane direction has therefore appeared resulting in a spin-dependent photovoltaic effect in vertical heterojunction devices and making them suitable for CPL detection. While a self-powered CPL detector showed a limited (but one of the highest to date) anisotropy factor of 0.3 due to possible spinflips during the transport process, the factor rose to 0.6 under bias prompting extension of the effective spin-diffusion length.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据