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Polarization Reversal of Group IV–VI Semiconductors with Pucker‐Like Structure: Mechanism Dissecting and Function Demonstration by Yali Yu; Tao Xiong; Yue‐Yang Liu; Juehan Yang; Jian‐Bai Xia; Zhongming Wei is a Engineering article available to read on EtoBox.

What is Polarization Reversal of Group IV–VI Semiconductors with Pucker‐Like Structure: Mechanism Dissecting and Function Demonstration about?

## Abstract Polarization imaging presents advantages in capturing spatial, spectral, and polarization information from target objects across various spectral bands. It can improve the perceptual ability of image sensors and has garnered more applications. Despite its potential, challenges persist in identifying band information from imaged objects and implementing image enhancement using polarization imaging. These challenges often necessitate integrating spectrometers or other components, resulting in increased complexities within image processing systems and hindering device miniaturization trends. Here, we systematically elucidate the characteristics of anisotropic absorption reversal in pucker‐like group IV‐VI semiconductors MX (M = Ge, Sn; X = S, Se) through theoretical predictions and experimental validations. Additionally, the fundamental mechanisms behind anisotropy reversal in different bands are also explored. The polarization‐sensitive photodetector is constructed by utilizing MX as light‐absorbing layer, harnessing polarization‐sensitive photoresponse for virtual imaging. The results indicate that the utilization of polarization reversal photodetectors, without excessiv

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Author

Yali Yu; Tao Xiong; Yue‐Yang Liu; Juehan Yang; Jian‐Bai Xia; Zhongming Wei

Publisher

Wiley

Published

2023

Field

Engineering (Physical Sciences)