Multifunctional Logic Gates via Coexistent Positive and Negative Photoconductivity of a Single Bi<sub>2</sub>Se<sub>3</sub> Photodetector
Because existing electronic logic gates have some limitations in the era of information explosion, the demand for substantial amounts of data processing has aroused interest in new types of logic gates. The use of optoelectronic materials to prepare logic gates is popular; however, they often have complex structures, high power consumption, and low reliability. Herein, a new optoelectronic logic gate (OELG) is presented based on the coexistence of positive and negative photoconductivities in the 2D material Bi<sub>2</sub>Se<sub>3</sub> at different wavelengths. Five logic gate signals (OR, AND, NOT, NOR, and NAND) can be modulated by inputting different wavelengths of light (405 and 808 nm) through a single Bi<sub>2</sub>Se<sub>3</sub> photodetector, offering a new method for simple-structured OELGs. For practical applications, five logic gate output signals are modulated with 100% accuracy on an 8 × 8 pixel array, and simple imaging and logical processing of the images are demonstrated.
Authors
- Xiaoxian Song (ORCID: https://orcid.org/0000-0002-1341-1656)
- Wenyao Wu
- Xiaodong Shi (ORCID: https://orcid.org/0000-0001-9154-6663)
- Haiting Zhang (ORCID: https://orcid.org/0000-0002-0174-8315)
- Jianquan Yao
- Xudong Ren (ORCID: https://orcid.org/0000-0003-3327-5417)
- Ruihuan Zhang (ORCID: https://orcid.org/0000-0003-4486-2916)
- Yunxia Ye (ORCID: https://orcid.org/0000-0002-1765-4065)
- Zijie Dai (ORCID: https://orcid.org/0000-0002-2343-6531)
- Chao Li (ORCID: https://orcid.org/0000-0001-6110-6210)
- Liping Liu (ORCID: https://orcid.org/0000-0002-5941-4422)
- Jingjing Zhang (ORCID: https://orcid.org/0009-0007-8591-5515)
- Yating Zhang (ORCID: https://orcid.org/0000-0002-6927-8452)
- Xuanqi Zhong
Institutions
- Agency for Science, Technology and Research (SG)
- Jiangsu University (CN)
- Tianjin University (CN)
- National University of Defense Technology (CN)
- Institute of Materials Research and Engineering (SG)
- Xiamen University of Technology (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-05-09
- DOI
- https://doi.org/10.1002/adma.202416934
- Citations
- 17
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 8.80
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Government of Jiangsu Province
- Natural Science Foundation of Jiangsu Province
- Natural Science Research of Jiangsu Higher Education Institutions of China