Van Der Waals Interfacial Engineering for High-Performance Macroscopic Assembled Graphene (MAG)-Silicon Schottky Photodiodes
In 2D layered systems, converting excessive photoexcited energy into an electrical response before losing it to the substrate is crucial for energy-efficient photodetection. These hot electron energy losses at photoemission junctions limit the carrier transfer, sensitivity, and modulation frequencies. Our study showcases improved photoresponse in macroscopic assembled graphene (MAG)/Si Schottky junctions by inserting a graphene (Gr) layer that electronically decouples MAG from Si. This van der Waals (vdW) engineering interface effectively suppresses dark current while maintaining hot carrier rethermalization in the MAG film, leading to enhanced photo thermionic emission (PTI). This vdW interfacial engineering technique has broader implications in energyefficient electronics, optoelectronics, and memory devices.
Authors
- Wenzhang Fang (ORCID: https://orcid.org/0000-0002-1111-2695)
- Xiaolei Ding (ORCID: https://orcid.org/0000-0001-8379-8510)
- Zongwen Li (ORCID: https://orcid.org/0000-0002-8700-5685)
- Yance Chen (ORCID: https://orcid.org/0000-0002-8208-0627)
- Bin Yu (ORCID: https://orcid.org/0000-0003-0237-6311)
- Muhammad Abid Anwar (ORCID: https://orcid.org/0000-0003-2577-1381)
- Yang Xu (ORCID: https://orcid.org/0000-0003-3148-7678)
- Srikrishna Chanakya Bodepudi (ORCID: https://orcid.org/0000-0003-4519-581X)
- Zhixiang Zhang (ORCID: https://orcid.org/0000-0002-1161-5065)
- Huan Hu (ORCID: https://orcid.org/0000-0002-1317-5470)
- Yue Dai (ORCID: https://orcid.org/0000-0002-3483-7867)
- Muhammad Faizan Malik (ORCID: https://orcid.org/0000-0002-8440-7881)
- Yunfei Xie (ORCID: https://orcid.org/0009-0001-1291-4833)
Institutions
- Zhejiang University-University of Edinburgh Institute (CN)
- Zhejiang University (CN)
Publication Details
- Published
- 2025-03-09
- DOI
- https://doi.org/10.1109/edtm61175.2025.11040891
- Primary Topic
- Graphene research and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00