期刊
JOURNAL OF DISPLAY TECHNOLOGY
卷 5, 期 12, 页码 515-519出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JDT.2009.2026189
关键词
Hydrogen incorporation; InGaZnO; self-align; silicon nitride; top-gate coplanar thin-film transistors (TFTs)
Self-aligned techniques are often used in conventional CMOS and Si-based thin-film transistors (TFTs) technologies due to various merits. In this paper, we report self-aligned coplanar top-gate InGaZnO TFTs using PECVD a-SiNx : H patterned to have low hydrogen content in the channel region and high hydrogen content in the source/drain region. After annealing to induce hydrogen diffusion from a-SiNx : H into the oxide semiconductor, the source-drain regions become more conductive and yet the channel region remains suitable for TFT operation, yielding a working self-aligned TFT structure. Such fabrication involves neither back-side exposure nor ion implantation, and thus may be compatible with the typical and cost-effective TFT manufacturing.
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