Polarization photodetectors with configurable polarity transition enabled by programmable ferroelectric-doping patterns

Shuaiqin Wu, Jie Deng, Xudong Wang (), Jing Zhou (), Hanxue Jiao, Qianru Zhao, Tie Lin, Hong Shen, Xiangjian Meng, Yan Chen (), Junhao Chu and Jianlu Wang
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Shuaiqin Wu: Fudan University
Jie Deng: Chinese Academy of Sciences
Xudong Wang: Chinese Academy of Sciences
Jing Zhou: Chinese Academy of Sciences
Hanxue Jiao: Chinese Academy of Sciences
Qianru Zhao: Chinese Academy of Sciences
Tie Lin: Chinese Academy of Sciences
Hong Shen: Chinese Academy of Sciences
Xiangjian Meng: Chinese Academy of Sciences
Yan Chen: Fudan University
Junhao Chu: Fudan University
Jianlu Wang: Fudan University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Advances in symmetry-breaking engineering of heterointerfaces for optoelectronic devices have garnered significant attention due to their immense potential in tunable moiré quantum geometry and enabling polarization light detection. Despite several proposed approaches to breaking the symmetry of low-dimensional materials, there remains a lack of universal methods to create materials with prominent polarization detection capabilities. Here, we introduce a reliable strategy for manipulating the symmetry of low-dimensional materials through a programmable ferroelectric-doping patterns technique. This method introduces a spontaneous photocurrent and enables the detection of linearly polarization light in isotropic 2H-MoTe2. The 2H-MoTe2 photodetector exhibits a significant short-circuit photocurrent intensity (Jsc = 29.9 A/cm2) and open-circuit voltage Voc of 0.12 V ( ~ 3 × 105 V/cm). Under a specific bias, the polarization ratio transitions from 1 to ∞/−∞, shifting from a positive state (unipolar regime) to a negative state (bipolar regime). These findings underscore the potential of ferroelectric-doping patterns as a promising approach to creating composite materials with artificial bulk photovoltaic effect and achieving high-performance polarization light detection.

Date: 2024
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DOI: 10.1038/s41467-024-52877-3

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