[8a-PA3-1~27] 12.4 Organic light-emitting devices and organic transistors

[8a-PA3-21] Field-effect transistors using the (NH₄)₂S treated PbS colloidal nano-dot films

〇(M1)Yumi Takeichi¹, Nobuhiro Mitani¹, Kazuyuki Uno¹, Ichiro Tanaka¹ (1.Wakayama Univ.)

Keywords:PbS colloidal nano-dots, (NH4)2S treatment, Field-effect transistors

Semiconductor colloidal nano-dots (CNDs), which consist of the semiconductor nano crystals and organic ligand molecule, are promising solution-processible materials for various thin film electronic devices. In this study, we fabricated the field-effect transistors using the ligand-removed PbS CND films by (NH₄)₂S treatment. The conductivity of the films was considerably improved, and the highest hole mobility of 1.1×10^-3 cm²V^-1s^-1 was obtained.