Efficiency Improvements in Solution‐Based CuInS2 Solar Cells Incorporating a Cl‐Doped ZnO Nanopillars Array

• DOI: 10.1002/pssa.201700191
• Publication Date: 2017-09-29T16:44:52Z
• Authors: Y. Di Iorio; M. Berruet; D. L. Gau; E. L. Spera; C. J. Pereyra; R. E. Marotti; M. Vázquez
• Keywords: Nanopillar; Photocurrent; Equivalent series resistance; Charge carrier

Solar cells are prepared combining ZnO as n‐type window In 2 S 3 buffer layer and CuInS p‐type absorbing layer. Superstrate configuration is chosen so that all the materials could be using inexpensive eco‐friendly techniques, based on solution processed deposition methods non‐toxic materials, avoiding vacuum high temperature Cd‐containing layers KCN purification stages. Also, no further sulfurization treatment involved in preparation. To improve collection efficiency, built two different nanostructures (with without Cl‐doping) compared to response of a cell with just one dense The photoresponse three solar analysed by J–V curves under illumination intensity‐modulated photovoltage/photocurrent spectroscopy. A systematic characterization morphology composition carried out X‐ray diffraction Raman confocal electronic microscopy. introduction nanostructured not enough produce marked improvement any electrical parameters. Instead, presence Cl‐doped nanopillars shown increase efficiency up maximum value 2.8%. better series resistance together higher for charge contributes explain corresponding efficiency.