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http://dx.doi.org/10.5012/bkcs.2012.33.12.4063

Influence of Nanoporous Oxide Substrate on the Performance of Photoelectrode in Semiconductor-Sensitized Solar Cells  

Bang, Jin Ho (Department of Chemistry and Applied Chemistry, Hanyang University)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.12, 2012 , pp. 4063-4068 More about this Journal
Abstract
Oxide substrates in semiconductor-sensitized solar cells (SSSCs) have a great impact on their performance. $TiO_2$ has long been utilized as an oxide substrate, and other alternatives such as ZnO and $SnO_2$ have also been explored due to their superior physical properties over $TiO_2$. In the development of high-performance SSSCs, it is of significant importance to understand the effect of oxides on the electron injection and charge recombination as these two are major factors in dictating solar cell performance. In addition, elucidating the relationship between these two critical processes and solar cell performance in each oxide is critical in building up the basic foundation of SSSCs. In this study, ultrafast pump-probe laser spectroscopy and open-circuit decay analysis were conducted to examine the characteristics of three representative oxides ($TiO_2$, ZnO, and $SnO_2$) in terms of electron injection kinetics and charge recombination, and the implication of results is discussed.
Keywords
Semiconductor-sensitized solar cells; Photoelectrode; Oxide substrates; Electron injection; Charge recombination;
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