Self-powered photodetector based on CuInP <sub>2</sub> S <sub>6</sub> /MoSe <sub>2</sub> heterostructure
The construction of two-dimensiona heterostructures offers a novel strategy for modulating optoelectronic devices. In this work, we fabricated CuInP<sub>2</sub>S<sub>6</sub>(CIPS)/MoSe<sub>2</sub>ferroelectric heterostructures by scotch-tape method and investigated its optoelectronic properties. The detector shows a gate voltage tunable photoelectric response, the responsivity is improved by approximately 3902%, achieving a maximum of 5.57 A W<sup>-1</sup>and the detectivity by 1785%, reaching 6.66 × 10<sup>8</sup>Jones. Interestingly, upon the application of a gate voltage, the polarized electric field arising from ferroelectricity of CIPS enables the device to operate in a self-powered mode. Remarkably, the devices attained a high responsivity of 170.86 mA W<sup>-1</sup>and a detectivity of 2.66 × 10<sup>9</sup>Jones, respectively. Our research demonstrates that ferroelectric heterojunctions exhibit significant potential for application in self-powered photodetectors.
Authors
- Jiaxin Cheng (ORCID: https://orcid.org/0000-0002-6130-9330)
- Yanling Yin (ORCID: https://orcid.org/0000-0002-0617-2394)
- Dongsheng Tang (ORCID: https://orcid.org/0000-0003-0804-983X)
- Jie Li (ORCID: https://orcid.org/0000-0003-0973-8645)
- Canhui Pan
- Guohao Yuan
- Weichang Zhou
- Yuehua Peng
- Xue Chen
Institutions
- Ministry of Education (IR)
- Hunan First Normal University (CN)
Publication Details
- Journal
- Journal of Physics Condensed Matter
- Published
- 2026-01-22
- DOI
- https://doi.org/10.1088/1361-648x/ae3c4d
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00