Abstract:
:'Ideal' transparent p-type semiconductors are required for the integration of high-performance thin-film transistors (TFTs) and circuits. Although CuI has recently attracted attention owing to its excellent opto-electrical properties, solution processability, and low-temperature synthesis, the uncontrolled copper vacancy generation and subsequent excessive hole doping hinder its use as a semiconductor material in TFT devices. In this study, we propose a doping approach through soft chemical solution process and transparent p-type Zn-doped CuI semiconductor for high-performance TFTs and circuits. The optimised TFTs annealed at 80 °C exhibit a high hole mobility of over 5 cm2 V-1 s-1 and high on/off current ratio of ~107 with good operational stability and reproducibility. The CuI:Zn semiconductors show intrinsic advantages for next-generation TFT applications and wider applications in optoelectronics and energy conversion/storage devices. This study paves the way for the realisation of transparent, flexible, and large-area integrated circuits combined with n-type metal-oxide semiconductor.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Liu A,Zhu H,Park WT,Kim SJ,Kim H,Kim MG,Noh YYdoi
10.1038/s41467-020-18006-6subject
Has Abstractpub_date
2020-08-27 00:00:00pages
4309issue
1issn
2041-1723pii
10.1038/s41467-020-18006-6journal_volume
11pub_type
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