Study of electrical properties of CIGS thin films prepared by multistage processes |
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Authors: | F. Mesa G. Gordillo |
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Affiliation: | Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia |
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Abstract: | In this work, the dispersion mechanisms affecting the electric transport in CuIn1−xGaxSe2 (CIGS) thin films grown by a chemical reaction of the precursor species, which are evaporated sequentially in two and three-stage processes are analyzed. It was found, through conductivity and Hall coefficient measurements carried out as functions of temperature, that the electrical conductivity of the CuIn1−xGaxSe2 films is affected by the transport of free carriers in extended states of the conduction band as well as for variable range hopping transport mechanisms, each one predominating in a different temperature range. |
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Keywords: | CuIn1&minus xGaxSe2 Thin films Electric transport Solar cells |
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