Highly Responsivity of UV Photodetector Based on ZnO/PEDOT:PSS/CsCu 2 I 3 Heterojunction
Abstract
Perovskite materials have been widely developed for use in photodetectors due to their unique advantages, but most perovskites contain environmentally harmful lead. Herein, spin-coating is employed to fabricate nontoxic Cu-based perovskite films. By constructing a CsCu 2 I 3 and ZnO heterojunction and incorporating a PEDOT:PSS hole transport layer, the ZnO/PEDOT:PSS/CsCu 2 I 3 UV photodetector demonstrates a significantly enhanced spectral range and improved optoelectronic performance compared to a CsCu 2 I 3 photodetector. Specifically, the photocurrent of ZnO/PEDOT:PSS/CsCu 2 I 3 is enhanced by 3 orders of magnitude, reaching 1.43 × 10 –4 A, and the responsivity is improved 57-fold to 0.67 A/W. This achievement provides an effective route for fabricating highly responsive Cu-based perovskite photodetectors.
Fields of Study & Subjects
Perovskite Materials and Applications
Advanced Photocatalysis Techniques
Copper-based nanomaterials and applications
Publication details
- Journal / source
- Crystal Growth & Design
- Publisher
- American Chemical Society (ACS)
- Volume
- 26
- Issue
- 11
- Pages
- 4161–4169
- Publication date
- 20 May 2026
- Language
- EN