Journal
CHEMICAL PHYSICS LETTERS
Volume 541, Issue -, Pages 105-109Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2012.05.074
Keywords
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Funding
- National Natural Science Foundation of China [11174071]
- Fund of international cooperation project of Wuhan City and Hubei Province [201070934339, 2010BFA010]
- Fund of morning Program [200950431161]
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CdSe quantum dots (QDs) were introduced as an interlayer in the poly(3-hexylthiophene)(P3HT)/TiO2 nanorod arrays (NRAs) hybrid solar cells. The presence of CdSe QDs was found to provide enhanced light absorption, assisting charge separation at the P3HT/TiO2 interface, and leading to a lower recombination rate of the electrons due to the stepwise structure of band edge in P3HT/CdSe/TiO2, which accounts for the observed enhanced photocurrent and photovoltage of the hybrid solar cells. As a result, the efficiency of P3HT/CdSe QDs/TiO2 NRAs hybrid cell is greatly higher than that of P3HT/TiO2 NRAs based cell. (C) 2012 Elsevier B. V. All rights reserved.
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