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Studying the charge carrier properties in CuInS2/ Ag Nanoparticle hybrid films
谭铭瑞
谭铭瑞
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Abstract
Opto-electronic characteristics of CuInS2 thin film composed of Ag nanoparticles(NPs) is scanned by multi-optoelectronic test techniques. The electrochemical impedance spectroscopy shows that Ag NPs would decrease the effective resistance in CuInS2 film. The number of photo-generated carriers has obviously increased based on the data of nanosecond transient photocurrent. The transient absorption data points out that Ag NPs increase the exciton energy in the CuInS2 film. That facilitates the dissociation of exciton and improves the yield of photo-generated carriers, which increase the number of photo-generated carriers. The results are useful to further understand the characteristics of carriers in the CuInS2 thin film and are important for the operation of the corresponding optoelectronic devices.
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