Abstract

We demonstrate that semiconductor nanorods can be used to fabricate readily processed and efficient hybrid solar cells together with polymers. By controlling nanorod length, we can change the distance on which electrons are transported directly through the thin film device. Tuning the band gap by altering the nanorod radius enabled us to optimize the overlap between the absorption spectrum of the cell and the solar emission spectrum. A photovoltaic device consisting of 7-nanometer by 60-nanometer CdSe nanorods and the conjugated polymer poly-3(hexylthiophene) was assembled from solution with an external quantum efficiency of over 54% and a monochromatic power conversion efficiency of 6.9% under 0.1 milliwatt per square centimeter illumination at 515 nanometers. Under Air Mass (A.M.) 1.5 Global solar conditions, we obtained a power conversion efficiency of 1.7%.

Keywords

NanorodMaterials scienceOptoelectronicsEnergy conversion efficiencyNanometreHybrid solar cellSolar cellPhotovoltaic systemPolymer solar cellMultiple exciton generationPolymerBand gapAbsorption (acoustics)NanotechnologyQuantum efficiency

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Publication Info

Year
2002
Type
article
Volume
295
Issue
5564
Pages
2425-2427
Citations
4978
Access
Closed

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Cite This

Wendy U. Huynh, Janke J. Dittmer, A. Paul Alivisatos (2002). Hybrid Nanorod-Polymer Solar Cells. Science , 295 (5564) , 2425-2427. https://doi.org/10.1126/science.1069156

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DOI
10.1126/science.1069156