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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 ultrafast photoresponse speed of less than 10 μs. The solution-based process and excellent device performance strongly underscore hybrid perovskites as promising material candidates for photoelectronic applications.

journal_name

Nat Commun

journal_title

Nature communications

authors

Li F,Ma C,Wang H,Hu W,Yu W,Sheikh AD,Wu T

doi

10.1038/ncomms9238

subject

Has Abstract

pub_date

2015-09-08 00:00:00

pages

8238

issn

2041-1723

pii

ncomms9238

journal_volume

6

pub_type

杂志文章

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