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Luis Martinez, Maria Bernechea, F. Pelayo García de Arquer and Gerasimos Konstantatos Near IR-Sensitive, Non-toxic, Polymer/Nanocrystal Solar Cells Employing Bi2S3 as the Electron Acceptor Advanced Energy Materials 1

Article first published online: 19 SEP 2011 | DOI: 10.1002/aenm.201100441

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Bi2S3 nanocrystals are employed in a polymer/nanocrystal solar cell as a non-toxic inorganic electron acceptor with a high absorption coefficient and a bandgap of 1.3 eV optimal for single-junction solar harnessing. The reported solar cell yields a power conversion efficiency of 0.46% in a bilayer structure and shows an internal quantum efficiency in excess of 70% as a result of efficient exciton dissociation at the interface of Bi2S3 and P3HT.

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