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<p>Polarization detection, particularly the simultaneous detection of linearly polarized light (LPL) and circularly polarized light (CPL), is crucial for modern optoelectronic applications. While some chiral hybrid perovskites (CHPs) have demonstrated the capability for both LPL and CPL detection, their anisotropy factors remain relatively low, particularly with LPL values (LPL &lt; 2) showing significant room for enhancement. Here, utilizing a half-substitution strategy, we successfully synthesized two patented alternating cations intercalation-type hybrid perovskites, (<i>R</i>/<i>S</i>-PPA)(BA)PbBr<sub>4</sub> (<Emphasis Type="BoldItalic">2-R/S</Emphasis>; <i>R</i>/<i>S</i>-PPA = <i>R</i>/<i>S</i>-1-phenylpropylamine, BA = butylamine), which exhibit pronounced bulk photovoltaic effects (BPVE). Leveraging BPVE, <Emphasis Type="BoldItalic">2-R</Emphasis> single-crystal devices achieve efficient self-powered detection of both LPL and CPL under zero bias conditions. The CPL anisotropy factor reaches 0.36, exceeding that of many conventional CHPs. Notably, <Emphasis Type="BoldItalic">2-R</Emphasis> demonstrates a linear polarization asymmetry ratio of up to 5.1 under an incident intensity of 567.5 mW cm<sup>−2</sup> in self-powered mode, significantly surpassing values reported for CHPs capable of both CPL and LPL detection. This work presents a promising strategy for advancing high-performance CPL and LPL detection in CHPs.</p>

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Alternating cations intercalation-type chiral-polar hybrid perovskites for efficient self-powered polarization detection

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Zeng-Kui Zhu,
  • Ziyi Qian,
  • Tingting Zhu,
  • Jianbo Wu,
  • Panpan Yu,
  • Ying Zeng,
  • Hui-Ping Xiao,
  • Huawei Yang,
  • Yueying Wang,
  • Wenhui Wu,
  • Chengmin Ji,
  • Lina Li,
  • Junhua Luo

摘要

Polarization detection, particularly the simultaneous detection of linearly polarized light (LPL) and circularly polarized light (CPL), is crucial for modern optoelectronic applications. While some chiral hybrid perovskites (CHPs) have demonstrated the capability for both LPL and CPL detection, their anisotropy factors remain relatively low, particularly with LPL values (LPL < 2) showing significant room for enhancement. Here, utilizing a half-substitution strategy, we successfully synthesized two patented alternating cations intercalation-type hybrid perovskites, (R/S-PPA)(BA)PbBr4 (2-R/S; R/S-PPA = R/S-1-phenylpropylamine, BA = butylamine), which exhibit pronounced bulk photovoltaic effects (BPVE). Leveraging BPVE, 2-R single-crystal devices achieve efficient self-powered detection of both LPL and CPL under zero bias conditions. The CPL anisotropy factor reaches 0.36, exceeding that of many conventional CHPs. Notably, 2-R demonstrates a linear polarization asymmetry ratio of up to 5.1 under an incident intensity of 567.5 mW cm−2 in self-powered mode, significantly surpassing values reported for CHPs capable of both CPL and LPL detection. This work presents a promising strategy for advancing high-performance CPL and LPL detection in CHPs.