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RESEARCH PRODUCT

Chalcopyrite Semiconductors for Quantum Well Solar Cells

Sascha SadewasserMaziar AfsharDaniel Abou-rasEsa RäsänenMartha Ch. Lux-steinerJ. AlbertSebastian LehmannAngus RockettDavid Fuertes Marrón

subject

Theory of solar cellsPhotoluminescenceMaterials scienceta114Renewable Energy Sustainability and the Environmentbusiness.industryHybrid solar cellQuantum dot solar cellEpitaxylaw.inventionlawSolar cellOptoelectronicsGeneral Materials ScienceCharge carrierbusinessQuantum well

description

We explore here the possibilities of using highly absorbing chalcopyrite semiconductors of the type Cu(In,Ga)Se2 in a quantum well solar cell structure. Thin alternating layers of 50 nm CuInSe2 and CuGaSe2 were grown epitaxially on a GaAs(100) substrate employing metalorganic vapor phase epitaxy. The optical properties of a resulting structure of three layers were investigated by photoluminescence and photoreflectance, indicating charge carrier confinement ∗To whom correspondence should be addressed †Helmholtz-Zentrum Berlin ‡Universidad Politecnica de Madrid ¶University of Illinois §University of Jyvaskyla ‖Current address: Universitat des Saarlandes, Uni Campus, Gebaude A5.1, 66123 Saarbrucken Germany

https://doi.org/10.1002/aenm.201100362