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4 October 2024 Chiral perovskite as a promising semiconductor for opto-spintronics
Wanyi Nie
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Proceedings Volume PC13119, Spintronics XVII; PC131190C (2024) https://doi.org/10.1117/12.3027276
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
Chiral molecules are one of the Nature-inspired materials for their selective functionalities. Utilizing the chirality of a semiconductor, selective spin transport can be realized, which will be highly desirable for building semiconducting spintronics. Recently, organo-metal halide perovskites in chiral structures have been developed as a promising chiral semiconductor for spintronics. Its unique organic and inorganic structure allows for the structural chirality transfer from the packing of the organics to the inorganic back bones. However, the chiral perovskites are usually in low dimensions (2D, 1D or 0D) which are less conducting and lack visible light sensitivity due to the band gap widening. In this work, we investigate molecular dopants in the chiral perovskite matrix to improve the conductivity. We have incorporated a variety of p-type molecules in the perovskite structure, and found both dark and photo conductivity improved by 1-3 orders of magnitudes.Finally, we integrated our doped chiral perovskite thin film into a photo-diode device for polarized light sensing demonstration.
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Wanyi Nie "Chiral perovskite as a promising semiconductor for opto-spintronics", Proc. SPIE PC13119, Spintronics XVII, PC131190C (4 October 2024); https://doi.org/10.1117/12.3027276
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KEYWORDS
Perovskite
Semiconductors
Electrical conductivity
Molecules
Spintronics
Polarized light
Matrices
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