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Updated: Jul 11, 2025
08:12
Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
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Circularly Polarized Light-Dependent Pyro-Phototronic Effect from 2D Chiral-Polar Double Perovskites
Zhou Li1,2, Chengmin Ji1,3, Yipeng Fan1,2
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Journal of the American Chemical Society
|November 13, 2023
Summary
Researchers developed novel chiral-polar perovskites for enhanced circularly polarized light (CPL) detection. Combining chiroptical properties with the pyro-phototronic effect significantly boosts detector performance, enabling sensitive CPL sensing.
Area of Science:
- Materials Science
- Optoelectronics
- Solid-State Physics
Background:
- Chiral hybrid perovskites offer unique properties for circularly polarized light (CPL) detection.
- The pyro-phototronic effect enhances photodetector performance but is challenging for CPL detection.
Purpose of the Study:
- To combine chiroptical phenomena and the pyro-phototronic effect for advanced CPL detection.
- To design and synthesize novel lead-free chiral-polar double perovskites.
Main Methods:
- Synthesized two-dimensional (2D) lead-free chiral-polar double perovskites: S/R-[(4-aminophenyl)ethylamine]2AgBiI8·0.5H2O.
- Investigated the pyro-phototronic effect in these novel perovskite materials.
Main Results:
- Achieved unprecedented pyroelectric-based CPL detection.
- Demonstrated a 40-fold increase in pyro-phototronic current compared to photovoltaic current.
- Attained a high CPL detection figure of merit (glph) of up to 0.27 at zero bias.
Conclusions:
- The pyro-phototronic effect in chiral-polar perovskites enables highly sensitive CPL detection.
- This work opens new possibilities for chiral materials in optoelectronic applications.
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