Enhancement of Photoconversion Efficiency of ZnO Nanorod-Based Dye-Sensitized Solar Cells in Presence of ZrO₂ Thin Energy Barrier

Authors: Koo, Gumae; Lee, Wonjoo; Kil, Byungho; Ahn, Heejoon; Cho, Byung Won; Han, Sung-Hwan

Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 5, May 2011 , pp. 4476-4479(4)

Publisher: American Scientific Publishers

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Abstract:

In order to enhance the power conversion efficiency of ZnO nanorods-based dye-sensitized solar cells (DSSCs), ZrO₂ thin energy barriers were formed on ZnO nanorods using a sol-gel method. In DSSCs, the short-circuit current was substantially increased, and the dark current was significantly reduced in the presence of the ZrO₂ layer. Due to suppressed recombination in the presence of the ZrO₂ layer, 81.3% increment of power conversion efficiency is achieved compared to those without ZrO₂ layer.

Keywords: DYE-SENSITIZED SOLAR CELLS; RECOMBINATION; ZNO; ZRO2; WET-CHEMICAL PROCESS

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2011.3700

Publication date: 2011-05-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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