Polymeric nanocomposite infrared photovoltaics enhanced by pentacene

An infrared active thin film polymeric photovoltaic device is fabricated from regioregular poly(3-hexylthiophene), PbSe quantum dots, and the organic semiconductor pentacene. The PbSe quantum dots are infrared photosensitizers. Pentacene is incorporated into the formulation in a soluble precursor fo...

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Bibliographic Details
Published in:Applied physics letters 2007-06, Vol.90 (25), p.252112-252112-3
Main Authors: Thapa, Ram, Roy Choudhury, Kaushik, Kim, Won Jin, Sahoo, Yudhisthira, Cartwright, A. N., Prasad, Paras N.
Format: Article
Language:English
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Summary:An infrared active thin film polymeric photovoltaic device is fabricated from regioregular poly(3-hexylthiophene), PbSe quantum dots, and the organic semiconductor pentacene. The PbSe quantum dots are infrared photosensitizers. Pentacene is incorporated into the formulation in a soluble precursor form. The current-voltage measurements of the device show that the photovoltaic performance is significantly increased by the introduction of pentacene, with both short-circuit current density and open-circuit voltage increased by a factor of 2. The improved performance of the device is attributed to the high mobility of charge carriers in pentacene probably due to conducting domains provided by it.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2746082