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Title: Reducing mass-transport limitations in cobalt-electrolyte-based dye-sensitized solar cells by photoanode modification
Authors: Mhaisalkar, Subodh Gautam
Trang Pham, Thi Thu
Koh, Teck Ming
Nonomura, Kazuteru
Lam, Yeng Ming
Mathews, Nripan
Keywords: DRNTU::Engineering
Issue Date: 2014
Source: Trang Pham, T. T., Koh, T. M., Nonomura, K., Lam, Y. M., Mathews, N., & Mhaisalkar, S. (2014). Reducing Mass-Transport Limitations in Cobalt-Electrolyte-Based Dye-Sensitized Solar Cells by Photoanode Modification. ChemPhysChem, 15(6), 1216-1221.
Series/Report no.: ChemPhysChem
Abstract: Mass transport has been identified as a limiting problem in the photovoltaic performance of dye-sensitized solar cells based on electrolytes consisting of ionic liquids or cobalt complexes. A mixed TiO2 macroporous–mesoporous morphology employed as photoanode is demonstrated to assist the diffusion of electrolytes with higher viscosity or consisting of bulky redox mediators, such as cobalt di-tert-butyl bipyridine [Co(dtb)3]2+/3+. This morphology with large pores improves the non-linearity of photocurrent response to light intensity indicating better diffusion. The incorporated sub-micrometer pores also reduce recombination and decrease diffusion resistance, as revealed by electrochemical impedance spectroscopy.
ISSN: 1439-4235
DOI: 10.1002/cphc.201301056
Rights: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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