Diffusion behaviour of charge carriers in thin films of phthalocyanines
Diffusion behaviour of charge carriers in thin films of phthalocyanines
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DOI：
10.1016/0143-7208(94)00045-4
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发表时间：
1995
影响因子：
4.5
通讯作者：
H. Tian;Kongchang Chen
中科院分区：
文献类型：
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作者：
H. Tian;Kongchang Chen
采用真空蒸发法制备了酞菁（Pc）薄膜。通过瞬态光电压（Doppler效应）的测量，这些薄膜中的电荷载流子的扩散行为进行了研究。实验表明，酞菁中的主要电荷载体是从最接近光的表面扩散到内部体的电子。作为对比系统，还研究了Pc的光伏电池。器件的短路光电流（Isc）与最大瞬态Doppler光电压（Vmax）有密切关系。
Phthalocyanine (Pc) thin films were prepared by the vacuum-evaporating method. The diffusion behaviour of the charge carriers in these films was investigated by means of transient photovoltage (Dember effect) measurements. The experiments imply that the dominant charge carriers in phthalocyanines are electrons which diffuse from the surface closest to the light to the internal bulk. As a comparative system, photovoltic cells of Pc were also investigated. There was a close relationship between the short-circuit photocurrent (Isc) of the devices and the maximum transient Dember photovoltage (Vmax).