2 February 2009 The deep electronic trap effect of cyanine dye on the surface structure of AgCl microcrystal
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Abstract
In this paper, the influences of cyanine dye on the photoelectron decay of silver chloride micro-crystal have been studied with Microwave absorption and dielectric spectrum detection technology. The free photoelectron decay of silver halide sensitized becomes faster than that of pure silver halide, and the FDT are 86ns and 109ns for silver chloride sensitized(5.0ml/40g AgCl emulsion) and unsensitized, respectively. The absorption peak of the dye is at about 550nm, having about 50 nm red shift compared with that in methanol. This indicates that J- aggregate is formed on micro-crystal surface, moreover the peak of dye J-aggregate becomes sharper, the width of absorption peak narrower with the increasing of the concentration of dye. Dye J-aggregate increases the concentration of deep electronic trap in the surface of silver halide micro-crystals.
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Fenghua Xiang, Fenghua Xiang, Xiaowei Li, Xiaowei Li, Jixian Zhang, Jixian Zhang, } "The deep electronic trap effect of cyanine dye on the surface structure of AgCl microcrystal", Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 71603B (2 February 2009); doi: 10.1117/12.806194; https://doi.org/10.1117/12.806194
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