Ambipolar solution-processed hybrid perovskite phototransistors.

ABSTRACT: Organolead halide perovskites have attracted substantial attention because of their excellent physical properties, which enable them to serve as the active material in emerging hybrid solid-state solar cells. Here we investigate the phototransistors based on hybrid perovskite films and provide direct evidence for their superior carrier transport property with ambipolar characteristics. The field-effect mobilities for triiodide perovskites at room temperature are measured as 0.18 (0.17) cm(2) V(-1) s(-1) for holes (electrons), which increase to 1.24 (1.01) cm(2) V(-1) s(-1) for mixed-halide perovskites. The photoresponsivity of our hybrid perovskite devices reaches 320 A W(-1), which is among the largest values reported for phototransistors. Importantly, the phototransistors exhibit an ultr

SUBMITTER: Li F 

PROVIDER: S-EPMC4569843 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature