Synthesis of Ag/CuO/rGO hybrid structure towards the applications in visible light photodetectors

Abstract

Introduction: 2D reduced graphene oxide (rGO) has become a key material in optoelectronic devices due to its outstanding electrical properties and stability. However, the application potential of rGO in such devices is still limited due to its low light absorption ability (especially in the visible region). Hence, this study aims to overcome this problem by synthesizing an Ag/CuO/rGO hybrid structure. Methods: Herein, while rGO was formed via a hydrazine vapor reduction, Ag and CuO were synthesized through simple, low-cost chemical techniques. Results: Our results revealed that compared to bare rGO and CuO/rGO samples, the hybrid Ag/CuO/rGO has remarkably higher absorption in the visible region. Besides, the fabricated Ag/CuO/rGO also demonstrated sensitivity toward blue light excitation, with good performance and stability. Conclusion: We hope that our study can further enable research on the application of rGO in the optoelectronic sector.