Abstract:The time-resolved spectra of free photoelectrons and shallow-trapped electrons in the T-grains AgBrI emulsion were simultaneously detected with microwave absorption and dielectric spectrum detection technique. The results indicate that the electron trap effects of sulfur sensitization centers and sulfur-plus-gold sensitization centers are different with equal quantities of Na2S2O3 added. The sulfur sensitization centers acted as a deep electron trap to pick up the electronic decay because of increasing the number of deep trapped electrons, while the sulfur-plus-gold sensitization centers as a shallow electron trap decrease the electronic decay through effectively controlling the recombination between the electrons and the holes. The depth of sulfur-plus-gold sensitization center is shallower than that of sulfur sensitization center after the KAuCl4 is added. The effects of sulfur sensitization center and sulfur-plus-gold sensitization center on the photoelectron decay are different in different sections of decay curves through the change in electron time-resolved spectra.
李晓苇,李新政,赖伟东,江晓利,田晓东,杨少鹏,傅广生. 化学增感对光电子时间分辨谱的影响[J]. 光谱学与光谱分析, 2005, 25(06): 815-818.
LI Xiao-wei, LI Xin-zheng, LAI Wei-dong, JIANG Xiao-li, TIAN Xiao-dong, YANG Shao-peng, FU Guang-sheng . Effects of Chemical Sensitization on Photoelectron Time-Resolved Spectrum. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(06): 815-818.
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