Solution-Processed CsPbBr₃ Quantum Dots/Organic Semiconductor Planar Heterojunctions for High-Performance Photodetectors.

ABSTRACT: Planar heterojunctions (PHJs) are fundamental building blocks for construction of semiconductor devices. However, fabricating PHJs with solution-processable semiconductors such as organic semiconductors (OSCs) is a challenge. Herein, utilizing the orthogonal solubility and good wettability between CsPbBr₃ perovskite quantum dots (PQDs) and OSCs, fabrication of solution-processed PQD/OSC PHJs are reported. The phototransistors based on bilayer PQD/PDVT-10 PHJs show responsivity up to 1.64 × 10⁴ A W^-1 , specific detectivity of 3.17 × 10¹² Jones, and photosensitivity of 5.33 × 10⁶ when illuminated by 450 nm light. Such high photodetection performance is attributed to efficient charge dissociation and transport, as well as the photogating

SUBMITTER: Chen K 

PROVIDER: S-EPMC9036026 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature