Authors: B LaraLara A M Fernández
Publish Date: 2014/09/27
Volume: 26, Issue: 8, Pages: 5593-5602
Abstract
CuInGaSe2 CIGS is a semiconductor that has an absorption coefficient more than 105 suitable for building high efficiency thin film solar cells There are a lot of reports that mention different techniques to CIGS synthesis These techniques can involve physical or chemical processes with technical and economical advantages and disadvantages Probably one of the major obstacles to CIGS solar cell commercialization is that there are various synthesis techniques for this type of solar cell and the most economical and feasible techniques do not produce an adequate absorber formation Among these processes electrodeposition is a versatile technique due to the possibility of making CIGS films in a large area However one of the major problems during the CIGS growth by electrodeposition is the microcracks formation stemming from some experimental conditions such as bath composition type of substrate electrode distance etc In this paper the electrolytic cell for CIGS coelectrodeposition was analyzed in order to know the film composition and morphology as a function of electrode position in the electrolytic cell We found that the CIGS film composition was not homogeneous and the morphology was not uniform in an electrolytic cell with electrodes placed vertically As a result of the previous experimentation we have designed an electrolytic cell with horizontal electrodes where the composition was more homogeneous and the morphology was more uniformB LaraLara would like to thank PROMEPUASLP for the scholarship This work was supported through the Project CONACYT82306 and CONACYTUNAM 123122 LIFYCS especially with the use of SEM/EDXHitachi SU1510 Also we would like to thank Maria Luisa Ramon García of IERUNAM for the XRD measurement and José Campos Álvarez of IERUNAM for SEM/EDX assistance
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