Defect Engineering of TlPt2S3 for Highly Polarization-Sensitive Photodetector

Autor: Wenyue Wang, Fangqi Liu, Jian Shi, Zixin Yang, Tongtong Wang, Bin Liu, Qiang Yu, Sicong Zhu, Xianping Wang, Jian Wu
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: IEEE Photonics Journal, Vol 15, Iss 1, Pp 1-6 (2023)
Druh dokumentu: article
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2022.3233351
Popis: Photodetectors based on two-dimensional materials exhibit excellent performance including high specific detectivity and fast response times. However, the polarization detection performance remains to be improved. Here, we propose a strategy to improve the polarization sensitivity of TlPt2S3-based photodetectors by defect engineering based on density functional theory (DFT) calculations and investigate their optoelectronic properties using quantum transport simulations at 0.2 V bias. Theoretical calculations show that the monolayer TlPt2S3 achieves a multifunctional output of the optoelectronic device and obtains a larger photocurrent and high extinction ratio by defect engineering under linearly polarized light irradiation. These results indicate that TlPt2S3 is expected to be one of the candidate materials for future optoelectronics and polarized light devices.
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