Journal
COORDINATION CHEMISTRY REVIEWS
Volume 248, Issue 13-14, Pages 1165-1179Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2004.03.015
Keywords
Gratzel cell; dye sensitization; transport; recombination; photovoltaic properties
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This review highlights several significant advancements in understanding of electron transport and recombination in dye-sensitized nanostructured TiO2 solar cells and the limitations that these processes impose on cell performance. The influences of the electrolyte composition, network morphology, defect structure, and light intensity on the electron transport dynamics are evaluated. Also assessed are evidences for and implications of the large, spatially distributed nanoparticle-electrolyte interfaces, trap-state distribution, band-edge movement, and the redox electrolyte on the recombination kinetics. The theoretical PV characteristics of a dye-sensitized solar cell are compared with those of the highest confirmed efficiency cells and the fundamental factors that limit their performance are discussed. (C) 2004 Elsevier B.V. All rights reserved.
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