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01-12-2013 | Issue 4/2013

Advances in Manufacturing 4/2013

Influence of defect density on the ZnO nanostructures of dye-sensitized solar cells

Journal:
Advances in Manufacturing > Issue 4/2013
Authors:
Yan-Yan Lou, Shuai Yuan, Yin Zhao, Zhu-Yi Wang, Li-Yi Shi

Abstract

The relationship between bilayer nanostructure, defect density and dye-sensitized solar cell (DSCC) performances was investigated. By adjusting bilayer nanostructures, defect density of ZnO nanodendrite-nanorods structure was decreased comparing to that of nanoflower-nanorods structure. The performances of DSCC based on ZnO nanodendrites-nanorods structure and nanoflower-nanorods structure were studied by Raman spectrum, room temperature photoluminescence, dye loading, photocurrent density-voltage characteristic and open-circuit voltage decay (OCVD) technique. The device with nanodendrite-nanorods structure has lower charge recombination rate and prolonged electron lifetime due to its microstructure feature.

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