Progress of p-channel bottom-gate poly-Si thin-film transistor by nickel silicide seed-induced lateral crystallization

被引:4
作者
Lee, Sol Kyu [1 ]
Seok, Ki Hwan [1 ]
Park, Jae Hyo [1 ]
Kim, Hyung Yoon [1 ]
Chae, Hee Jae [1 ]
Jang, Gil Su [1 ]
Lee, Yong Hee [1 ]
Han, Ji Su [1 ]
Joo, Seung Ki [1 ]
机构
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2016年 / 122卷 / 06期
关键词
SOLID-PHASE; PERFORMANCE; TFTS;
D O I
10.1007/s00339-016-0133-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Excimer laser annealing (ELA) is known to be the most common crystallization technology for the fabrication of low-temperature polycrystalline-silicon (poly-Si) thin-film transistors (TFTs) in the mass production industry. This technology, however, cannot be applied to bottom-gate (BG) TFTs, which are well developed for the liquid-crystal display (LCD) back-planes, because strong laser energy of ELA can seriously damage the other layers. Here, we propose a novel high-performance BG poly-Si TFT using Ni silicide seed-induced lateral crystallization (SILC). The SILC technology renders it possible to ensure low damage in the layers, smooth surface, and longitudinal large grains in the channel. It was observed that the electrical properties exhibited a steep subthreshold slope of 110 mV/dec, high field-effect mobility of 304 cm(2)/Vsec, high I-on/I-off ratio of 5.9 x 10(7), and a low threshold voltage of -3.9 V.
引用
收藏
页数:6
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