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The short\u2010circuit current density (<jats:italic>J<\/jats:italic><jats:sub>sc<\/jats:sub>) is notably increased by approximately 27\u2009% owing to the decreased crystallite size and the enhanced optical transmittance associated with Mg doping of the CuCrO<jats:sub>2<\/jats:sub> nanocrystalline sample. An open\u2010circuit voltage (<jats:italic>V<\/jats:italic><jats:sub>oc<\/jats:sub>) of 201\u2005mV, <jats:italic>J<\/jats:italic><jats:sub>sc<\/jats:sub> of 1.51\u2005mA\u2009cm<jats:sup>\u22122<\/jats:sup>, fill factor of 0.449, and overall photoconversion efficiency of 0.132\u2009% have been achieved with the CuCr<jats:sub>0.9<\/jats:sub>Mg<jats:sub>0.1<\/jats:sub>O<jats:sub>2<\/jats:sub> dye photocathode sensitized with the P1 dye under optimized conditions. This efficiency is nearly three\u2005times higher than that of the NiO\u2010based reference device, which is attributed to the largely improved <jats:italic>V<\/jats:italic><jats:sub>oc<\/jats:sub> and <jats:italic>J<\/jats:italic><jats:sub>sc<\/jats:sub>. The augmentation of <jats:italic>V<\/jats:italic><jats:sub>oc<\/jats:sub> and <jats:italic>J<\/jats:italic><jats:sub>sc<\/jats:sub> can be attributed to the lower valance band position and the faster hole diffusion coefficient of CuCr<jats:sub>0.9<\/jats:sub>Mg<jats:sub>0.1<\/jats:sub>O<jats:sub>2<\/jats:sub> compared to those of the NiO reference, respectively, which leads to a higher hole collection efficiency.<\/jats:p>","DOI":"10.1002\/cssc.201300265","type":"journal-article","created":{"date-parts":[[2013,6,21]],"date-time":"2013-06-21T12:39:46Z","timestamp":1371818386000},"page":"1432-1437","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":74,"title":["Enhanced Performance of p\u2010Type Dye\u2010Sensitized Solar Cells Based on Ultrasmall Mg\u2010Doped CuCrO<sub>2<\/sub> 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