摘要
在低温下观察到半导体多晶薄膜的瞬态光电导现象．给出了三维理论模型．理论研究表明，陷阶引起光电导，光生载流子通过隧道效应实现复合，使光电导逐渐衰减．我们的实验结果与理论计算结果符合得相当好．
The transient photoconductivity in a semiconductor polycrystal thin film has been observed at low temperature. A three dimension theory model is given in this paper.The theoretical research demonstrates that trapping and recombination of photoexcited carriers is realized by a tunneling effect,which results in the photoconductivity decay. Our experirnental results are in good agreement with the theoretical calculated results.
