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- Title
Amorphous InGaZnO Thin Film Transistor Fabricated with Printed Silver Salt Ink Source/Drain Electrodes.
- Authors
Caigui Yang; Zhiqiang Fang; Honglong Ning; Ruiqiang Tao; Jianqiu Chen; Yicong Zhou; Zeke Zheng; Rihui Yao; Lei Wang; Junbiao Peng; Yongsheng Song
- Abstract
Recently, amorphous indium-gallium-zinc-oxide thin film transistors (a-IGZO TFTs) with inkjet printing silver source/drain electrodes have attracted great attention, especially for large area and flexible electronics applications. The silver ink could be divided into two types: one is based on silver nanoparticles, and the other is silver salt ink. Organic materials are essential in the formulation of nanoparticle ink as a strong disperse stabilizer to prevent agglomeration of silver particles, but will introduce contact problems between the silver electrodes and the a-IGZO active layer after annealing, which is difficult to eliminate and leads to poor device properties. Our experiment is aimed to reduce this effect by using a silver salt ink without stabilizer component. With optimized inkjet printing conditions, the high performance of a-IGZO TFT was obtained with a mobility of 4.28 cm2/V·s and an on/off current ratio over 106. The results have demonstrated a significant improvement for a-IGZO TFTs with directly printed silver electrodes. This work presents a promising platform for future printed electronic applications.
- Subjects
INDIUM gallium zinc oxide; FLEXIBLE electronics; SILVER salts
- Publication
Applied Sciences (2076-3417), 2017, Vol 7, Issue 8, p844
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app7080844