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首页> 外文期刊>Japanese Journal of Applied Physics. Part 2, Letters & Express Letters >Amorphous Silicon Film Deposition by Low Temperature Catalytic Chemical Vapor Deposition ( < 150℃) and Laser Crystallization for Polycrystalline Silicon Thin-Film Transistor Application
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Amorphous Silicon Film Deposition by Low Temperature Catalytic Chemical Vapor Deposition ( < 150℃) and Laser Crystallization for Polycrystalline Silicon Thin-Film Transistor Application

机译:低温催化化学气相沉积(<150℃)和激光晶化的非晶硅膜沉积在多晶硅薄膜晶体管中的应用

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摘要

We deposited amorphous silicon (a-Si) films below 150℃ with a custom-designed catalytic chemical vapor deposition (Cat-CVD) system. The hydrogen content of the films was controlled at less than 1.5 at. %. Excimer laser crystallization was performed without the preliminary dehydrogenation process. Crystallization occurred at a laser energy density above 70 mJ/ cm~2. Thin-film transistors (TFTs) were fabricated while the entire process temperatures were maintained at below 200 ℃. We obtained a field-effect mobility of higher than 100 cm~2/(V s) and a sub-threshold slope of 116 mV/dec. The a-Si film prepared by a low temperature Cat-CVD is a promising candidate for polycrystalline silicon TFTs of the active matrix display.
机译:我们使用定制设计的催化化学气相沉积(Cat-CVD)系统在150℃以下沉积非晶硅(a-Si)膜。膜的氢含量控制在小于1.5at。%。 %。准分子激光结晶无需进行预脱氢过程即可进行。在高于70 mJ / cm〜2的激光能量密度下发生结晶。在整个过程温度保持在200℃以下的同时,制造了薄膜晶体管(TFT)。我们获得了高于100 cm〜2 /(V s)的场效应迁移率和116 mV / dec的亚阈值斜率。通过低温Cat-CVD制备的a-Si膜是有源矩阵显示器的多晶硅TFT的有希望的候选者。

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