Sensitive Self-Driven Single-Component Organic Photodetector Based on Vapor-Deposited Small Molecules.

ABSTRACT: Typically, organic solar cells (OSCs) and photodetectors (OPDs) comprise an electron donating and accepting material to facilitate efficient charge carrier generation. This approach has proven successful in achieving high-performance devices but has several drawbacks for upscaling and stability. This study presents a fully vacuum-deposited single-component OPD, employing the neat oligothiophene derivative DCV2-5T in the photoactive layer. Free charge carriers are generated with an internal quantum efficiency of 20 % at zero bias. By optimizing the device structure, a very low dark current of 3.4 · 10^-11 A cm^-2 at -0.1 V is achieved, comparable to the dark current of state-of-the-art bulk heterojunction OPDs. This optimization results in specific detectivities of 1· 10

SUBMITTER: Wolansky J 

PROVIDER: S-EPMC11636095 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature