Optimization of the response spectra of organic photodetectors based on P3HT:PC{sub 61}BM using PCPDTBT as the third component
- Xi’an University of Technology, Department of Electronic Engineering (China)
In this work, we report a new method for extending the response spectra of organic photodetectors (OPDs) by incorporating PCPDTBT in the P3HT:PC{sub 61}BM. The effects of PCPDTBT incorporation on the optical and electrical properties of OPDs were investigated, It was found that when the mass ratio of P3HT:PCPDTBT:PC{sub 61}BM was 8:2:10, the response spectrum of the active layer was extended to 840 nm. The responsivity (R) and external quantum efficiency of the OPDs reached 229, 278, 249 mA/W and 48%, 65%, 68% under 630, 530, and 460 nm illumination and − 1 V bias, respectively, and the detectivity (D{sup *}) reached 10{sup 12} Jones. The results show that highly ordered polymer PCPDTBT with appropriate mass ratio can increases the exciton generation in P3HT:PC{sub 61}BM, which increases the photocurrent of the device. In addition, the addition of PCPDTBT promotes the crystallization of the film, reduces the density of trap defects in the film, and reduces the dark current of the device. Graphic abstract: .
- OSTI ID:
- 22950030
- Journal Information:
- Optical and Quantum Electronics, Vol. 52, Issue 1; Other Information: Copyright (c) 2020 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 0306-8919
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-performance organic photodetectors enabled by a refined fibrillar multiphase morphology
Amorphous indium-gallium-zinc-oxide as electron transport layer in organic photodetectors