Temperature Dependence of Photoelectrical Properties of Single Selenium Nanowires
1 State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, 100871, People’s Republic of China
2 Department of Chemistry, TsingHua University, Beijing, People’s Republic of China
Nanoscale Research Letters 2010, 5:926-929 doi:10.1007/s11671-010-9585-2Published: 28 March 2010
Influence of temperature on photoconductivity of single Se nanowires has been studied. Time response of photocurrent at both room temperature and low temperature suggests that the trap states play an important role in the photoelectrical process. Further investigations about light intensity dependence on photocurrent at different temperatures reveal that the trap states significantly affect the carrier generation and recombination. This work may be valuable for improving the device optoelectronic performances by understanding the photoelectrical properties.