兰州大学物理系
纸质出版:1991
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[1]陈光华,张津燕,甘润今,张仿清.掺过渡金属钴的非晶硅薄膜的研究[J].电子学报,1991(05):111-113.
Chen Guanghua, Zhang Jinyan, Gan Runjin, et al. Studies of Amorphous Silicon Films Doped with Transition Metal Co[J]. Acta Electronica Sinica, 1991, (5): 111-113.
本文报道用电子束蒸发法将过渡金属Co掺入a-Si薄膜
用电导率与温度的依赖关系
ESR紫外透射谱测量手段对a-Si:Co薄膜的电学、光学特性
杂质对缺陷态的补偿和掺杂机理进行了研究。测量结果表明
Co杂质能级的中心位置在价带E
v
以上0.13eV.在480K
<
T
<
290K的温度范围内
电导率由两种导电机制组成:在480K
<
T
<
330K
是以价带扩展态中的空穴导电为主
在330K
<
T
<
290K
是以Co杂质能级的跳跃导电为主。
Amorphous silicon films doped with transition metal Co were prepared by electron beam evaporation. The electrical and optical properties
the impurity effect on the defects in the films and the doping mechanism are studied using temperature dependence of conductivity
ESR technique and ultraviolet absorption. The impurity level lies about 0.13 eV above valence band EV At 480<T<290K
an analysis of conductivity data allows to reveal two conduction mechanisms: 1) at 480<T<330K
σ is due to conduction of holes in valence band. 2) at 330<T<290K
it is due to hoping conduction through an impurity band.
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