Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 13, Issue 2, Pages 165-171Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200390024
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We report on solution-processed hybrid solar cells consisting of a nanaocrystalline inorganic semiconductor, CuInS2, and organic materials. Synthesis of quantized CuInS2 nanoparticles was performed using a colloidal route, where the particle surface was shielded by an organic surfactant. First attempts were made to use nanocrystalline CuInS2 with fullerene derivatives to form flat-interface donor-acceptor heterojunction solar cells. We investigated also bulk heterojunctions by replacing the CuInS2 single layer by a blend of CuInS2 and p-type polymer (PEDOT:PSS; poly(3,4-ethylenedioxythiophene:poly(styrene sulfonic acid) in the same cell configuration. Bulk heterojunction solar cells show better photovoltaic response with external quantum efficiencies up to 20%.
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