Abstract

We compare a series of molecular sensitizers in dye-sensitized solar cells containing the organic hole transporter 2,2',7,7'-tetrakis(N,N-di-p-methoxypheny-amine)-9,9'-spirobifluorene (spiro-MeOTAD). Charge recombination is reduced by the presence of "ion-coordinating" moieties on the dye, with the longest electron lifetime and highest solar cell efficiency achieved using a novel sensitizer with diblock alkoxy-alkane pendent groups. By further increasing the optical path length in the active layer, we achieve a power conversion efficiency of over 5% under simulated sun light.

Keywords

Energy conversion efficiencyAlkoxy groupPhotochemistryRecombinationIonSolar cellAmine gas treatingMaterials scienceDye-sensitized solar cellChemistryOptoelectronicsAlkylPhysical chemistryOrganic chemistryElectrode

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Publication Info

Year
2007
Type
article
Volume
7
Issue
11
Pages
3372-3376
Citations
370
Access
Closed

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Cite This

Henry J. Snaith, Adam J. Moulé, Cédric Klein et al. (2007). Efficiency Enhancements in Solid-State Hybrid Solar Cells via Reduced Charge Recombination and Increased Light Capture. Nano Letters , 7 (11) , 3372-3376. https://doi.org/10.1021/nl071656u

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DOI
10.1021/nl071656u