Flexible self-powered MoS<sub>2</sub>/LaVO<sub>3</sub> photodetector enhanced by graphene quantum dots interlayer
High-performance self-powered photodetectors (PDs) have attracted significant interest as highly efficient optoelectronic devices capable of operating without an external power source. In this study, we demonstrate a flexible MoS<sub>2</sub>/graphene quantum dots (GQDs)/LaVO<sub>3</sub>heterojunction PD fabricated on a polyethylene terephthalate substrate. The device performance was systematically evaluated with and without the GQDs interlayer. The incorporation of GQDs effectively suppresses charge recombination, leading to substantial improvements in key performance metrics such as responsivity, external quantum efficiency, and detectivity. Furthermore, the MoS<sub>2</sub>/GQDs/LaVO<sub>3</sub>PD exhibited excellent mechanical stability, maintaining stable photocurrent and dark current levels even after 3000 continuous bending cycles. These results highlight the potential of the MoS<sub>2</sub>/GQDs/LaVO<sub>3</sub>PD as a highly promising candidate for next-generation flexible optoelectronic applications.
Authors
- Si Duck Oh
- Dahee Kim (ORCID: https://orcid.org/0000-0001-7286-1334)
- Dong Hee Shin
- Hosun Lee (ORCID: https://orcid.org/0000-0003-0246-4442)
- H Kim (ORCID: https://orcid.org/0009-0000-6356-7678)
- Bo Gyu Choi
- Do Hoon Kim
Institutions
- Gyeongguk National University (KR)
- Inha University (KR)
- Kyung Hee University (KR)
- Gwangju Institute of Science and Technology (KR)
- Korea Institute of Industrial Technology (KR)
Publication Details
- Journal
- Nanotechnology
- Published
- 2025-06-30
- DOI
- https://doi.org/10.1088/1361-6528/ade9cc
- Citations
- 2
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Research Foundation of Korea