Superior self-powered infrared photodetector via semiconducting graphene-nanoribbons-based vertical heterojunctions
Self-powered photodetectors, operating without an external power source, have garnered extensive interest for infrared (IR) detection owing to their vast potential in low-power consumption sensor systems. Here, a short-wavelength infrared (SWIR) heterojunction photodetector utilizing semiconducting graphene nanoribbons has been achieved and demonstrated record-high performance. In the self-powered mode, the heterojunction photodetector presents a responsivity of 73.5 A/W and a detectivity of 7.5 × 1014 Jones, surpassing previously reported self-powered IR photodetectors by several orders of magnitude. The superior performance is primarily due to the enhancement of the electric field caused by the photogating effect at the heterointerface. The device also displays unparalleled performance at −5 V bias voltage, achieving a responsivity of 843 A/W, a detectivity of 1015 Jones, and an external quantum efficiency of 105%, all of which are record-breaking values for SWIR photodetectors to date. Therefore, our approach provides new insight and demonstrates great potential for future high-performance low-power consumption IR detection technology.
Authors
- Zeyuan Wang
- Muyang Li
- Yafei Ning
- Klaus Leifer (ORCID: https://orcid.org/0000-0002-8360-1877)
- Sabeen Fatima (ORCID: https://orcid.org/0000-0001-7173-1490)
- Aimin M. Song (ORCID: https://orcid.org/0000-0001-6550-518X)
- Mingyang Wang (ORCID: https://orcid.org/0000-0003-4731-6830)
- Hu Li (ORCID: https://orcid.org/0000-0003-1050-8441)
- Xiaoxiao Zheng (ORCID: https://orcid.org/0009-0009-1390-6665)
- Ziheng Li (ORCID: https://orcid.org/0009-0007-6291-611X)
- Lei Han (ORCID: https://orcid.org/0009-0009-6365-382X)
- Yu Sun (ORCID: https://orcid.org/0009-0001-5683-2530)
- Nan Han (ORCID: https://orcid.org/0009-0009-3349-6763)
Institutions
- Shandong University of Technology (CN)
- Uppsala University (SE)
- University of Electronic Science and Technology of China (CN)
- Shandong University (CN)
- University of Manchester (GB)
- Southern University of Science and Technology (CN)
- City University of Hong Kong, Shenzhen Research Institute (CN)
Publication Details
- Journal
- Applied Physics Reviews
- Published
- 2025-04-07
- DOI
- https://doi.org/10.1063/5.0251103
- Citations
- 8
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 4.14
Funders
- Natural Science Foundation of Shandong Province
- Shenzhen Fundamental Research Program
- Young Scientists Fund
- Shandong Provincial Postdoctoral Science Foundation
- Basic and Applied Basic Research Foundation of Guangdong Province