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Mechanism of low-temperature crystallization of amorphous silicon by atomic hydrogen anneal

机译:原子氢退火使非晶硅低温结晶的机理

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摘要

Amorphous silicon (a-Si) films prepared by catalytic chemical vapor deposition method using SiH4 and H-2 gas mixtures are crystallized at temperatures <350 degrees C by annealing in atomic hydrogen, (atomic hydrogen anneal: AHA). Atomic hydrogen was generated by catalytic cracking reaction of H-2 gas on a heated tungsten catalyzer. The crystalline fraction of a-Si film sample increased from 0% to several-tens% by AHA, and at the same time, the sample was etched with a rate of several-tens nm/min by AHA. Crystallization and etching by AHA depend on structural properties which are related to potential crystallinity in the initial a-Si film samples. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 8]
机译:通过催化化学气相沉积法使用SiH4和H-2气体混合物制备的非晶硅(a-Si)膜,通过在原子氢中退火,在<350摄氏度的温度下结晶(原子氢退火:AHA)。 H-2气体在加热的钨催化剂上的催化裂化反应产生了原子氢。 A-Si薄膜样品的结晶度通过AHA从0%增加到几十%,同时,通过AHA以几十nm / min的速率蚀刻样品。通过AHA的结晶和蚀刻取决于与初始a-Si膜样品中潜在结晶度有关的结构特性。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:8]

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