非晶硅辐射探测器

近年来，许多国家开展了用非晶硅（ａ－Ｓｉ：Ｈ）作为探测器件材料的研究，并取得了明显的进展。本文简要介绍这种探测器的原理，结构，现状及其前景。     

非晶硅薄膜的光膨胀效应

利用“差分电容膨胀计”方法，首次发现氢化非晶硅（ａ－Ｓｉ∶Ｈ）在光照下体积增大．著名的Ｓｔａｅｂｌｅｒ－Ｗｒｏｎｓｋｉ效应（ａ－Ｓｉ∶Ｈ的光致亚稳变化）很可能是这种“光膨胀”的后效应     

交联XE－60和PEG－20M极性固定相非晶硅膜改性弹性玻璃毛细管柱研究

研究了交联ＸＥ－６０和ＰＥＧ－２０Ｍ极性固定相非晶硅膜改性弹性玻璃毛细管柱，在适当的温度下，用过氧化二异丙苯（ＤＣＵＰ）游离基引发交联，成功地制备了ＸＥ－６０和ＰＥＧ－２０Ｍ极性柱，它们均具有柱效高、惰性好、化学稳定性好和耐溶剂、抗腐蚀、耐高温等性能，是一种新型的极性交联柱。     

ZC36微电流测试仪测量非晶硅有效隙态密度

首次报告了用国产的廉价的ＺＣ３６型微电流测试仪测量非晶硅有效隙密度的原理和结果，其结果与美国生产的昂贵的４０６１Ａ型半导综合测试仪测量结果相一致。     

非晶硅多层膜中氢的核反应分析研究

本文利用8.42MeV窄共振核反应~1H(~(19)F,αv)~(16)O研究了辉光放电制备非晶硅多层膜中氢的深度分布、游动性及其随退火温度的关系。引进高斯分辨函数简化了数据处理过程,得到氢浓度随深度的分布情况,对氢污染及测氢标准进行了讨论。     

UV–visible spectral characterization and density functional theory simulation analysis on laser-induced crystallization of amorphous silicon thin films

The effect of laser energy density on the crystallization of hydrogenated intrinsic amorphous silicon （a-Si：H） thin films was studied both theoretically and experimentally. The thin films were irritated by a frequency-doubled （λ= 532 nm） Nd：YAG pulsed nanosecond laser. An effective density functional theory model was built to reveal the variation of bandgap energy influenced by thermal stress after laser irradiation. Experimental results establish correlation between the thermal stress and the shift of transverse optical peak in Raman spectroscopy and suggest that the relatively greater shift of the transverse optical （TO） peak can produce higher stress. The highest crystalline fraction （84.5%） is obtained in the optimized laser energy density （1000 mJ/cm2） with a considerable stress release. The absorption edge energy measured by the UV- visible spectra is in fairly good agreement with the bandgap energy in the density functional theory （DFT） simulation.