説明
<jats:title>Abstract</jats:title><jats:p>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<jats:sup>2</jats:sup>V<jats:sup>−1</jats:sup>s<jats:sup>−1</jats:sup>for holes (electrons), which increase to 1.24 (1.01) cm<jats:sup>2</jats:sup>V<jats:sup>−1</jats:sup>s<jats:sup>−1</jats:sup>for mixed-halide perovskites. The photoresponsivity of our hybrid perovskite devices reaches 320 A W<jats:sup>−1</jats:sup>, 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.</jats:p>
収録刊行物
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- Nature Communications
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Nature Communications 6 (1), 8238-, 2015-09-08
Springer Science and Business Media LLC
