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Gate Voltage- and Bias Voltage-Tunable Staggered-Gap to Broken-Gap Transition Based on WSe2/Ta2NiSe5Heterostructure for Multimode Optoelectronic Logic Gate
- Source :
- ACS Nano; April 2024, Vol. 18 Issue: 17 p11462-11473, 12p
- Publication Year :
- 2024
-
Abstract
- Two-dimensional (2D) materials with superior properties exhibit tremendous potential in developing next-generation electronic and optoelectronic devices. Integrating various functions into one device is highly expected as that endows 2D materials great promise for more Moore and more-than-Moore device applications. Here, we construct a WSe2/Ta2NiSe5heterostructure by stacking the p-type WSe2and the n-type narrow gap Ta2NiSe5with the aim to achieve a multifunction optoelectronic device. Owing to the large interface potential barrier, the heterostructure device reveals a prominent diode feature with a large rectify ratio (7.6 × 104) and a low dark current (10–12A). Especially, gate voltage- and bias voltage-tunable staggered-gap to broken-gap transition is achieved on the heterostructure device, which enables gate voltage-tunable forward and reverse rectifying features. As results, the heterostructure device exhibits superior self-powered photodetection properties, including a high detectivity of 1.08 × 1010Jones and a fast response time of 91 µs. Additionally, the intrinsic structural anisotropy of Ta2NiSe5endows the heterostructure device with strong polarization-sensitive photodetection and high-resolution polarization imaging. Based on these characteristics, a multimode optoelectronic logic gate is realized on the heterostructure via synergistically modulating the light on/off, polarization angle, gate voltage, and bias voltage. This work shed light on the future development of constructing high-performance multifunctional optoelectronic devices.
Details
- Language :
- English
- ISSN :
- 19360851 and 1936086X
- Volume :
- 18
- Issue :
- 17
- Database :
- Supplemental Index
- Journal :
- ACS Nano
- Publication Type :
- Periodical
- Accession number :
- ejs67017189
- Full Text :
- https://doi.org/10.1021/acsnano.4c02923