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Cluster of Excellence
Engineering of Advanced Materials
The low efficiencies of inorganic solar cells in the ultraviolet (UV) and blue spectral region are key factors which restrict their power conversion efficiency (PCE). A simple and reliable technological step to overcome these limitations is the coating of the solar cells by UV-light conversion materials. At EAM, we developed a simple one-pot synthesis of highly luminescence ZnCdS:Mn@ZnS core-shell nanocrystals (NCs) with a record quantum yield of 70%. With our NCs and simple coating technique, the efficiency of a commercial Si solar cell was improved up to 12% in the UV spectral region, leading to an enhancement of the PCE by nearly 0.5 percentage points.
Levchuk, I.; Würth, C.; Krause, F.; Osvet, A.; Batentschuk, M.; Resch-Genger, U.; Kolbeck, C.; Herre, P.; Steinrück, H.-P.; Peukert, W.; Brabec, C. J.
Industrially scalable and cost-effective Mn2+doped ZnxCd1-xS/ZnS nanocrystals with 70% photoluminescence quantum yield, as efficient down-shifting materials in photovoltaics.
Energy Environ. Sci. 2016, 9, 1083 –1094.
Copyright The Royal Society of Chemistry 2016.