Solution-Processed Organic-Inorganic Perovskite Field-Effect Transistors with High Hole Mobilities.

Matsushima, Toshinori; Hwang, Sunbin; Sandanayaka, Atula S D; Qin, Chuanjiang; Terakawa, Shinobu; Fujihara, Takashi; Yahiro, Masayuki; Adachi, Chihaya · Adv Mater · 2016

basic_science · Level V

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Abstract

A very high hole mobility of 15 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> along with negligible hysteresis are demonstrated in transistors with an organic-inorganic perovskite semiconductor. This high mobility results from the well-developed perovskite crystallites, improved conversion to perovskite, reduced hole trap density, and improved hole injection by employing a top-contact/top-gate structure with surface treatment and MoO<sub>x</sub> hole-injection layers.