Regulating 3D Phase in Quasi-2D Perovskite Films for High-Performance and Stable Photodetectors.

ABSTRACT: The charge transport in quasi-2D perovskites limits their applications despite the superior stability and optoelectronic properties. Herein, a novel strategy is proposed to enhance the charge transport by regulating 3D perovskite phase in quasi-2D perovskite films. The carbohydrazide (CBH) as an additive is introduced into (PEA)₂ MA₃ Pb₄ I₁₃ precursors, which slows down the crystallization process and improves the phase ratio and crystal quality of the 3D phase. This structure change results in a significant improvement in charge transport and extraction, leading to the device demonstrating an almost 100% internal quantum efficiency, a peak responsivity of 0.41 A W^-1 , and a detectivity of 1.31 × 10¹² Jones at 570 nm under 0

SUBMITTER: Di H 

PROVIDER: S-EPMC10502668 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature