Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8036874 | Thin Solid Films | 2013 | 5 Pages |
Abstract
We incorporated a thin but structurally dense TiO2 layer prepared by atomic layer deposition (ALD) as an efficient hole blocking layer in the TiO2 nanofiber based solid-state dye sensitized solar cell (ss-DSSC). The nanofiber ss-DSSCs having ALD TiO2 layers displayed increased open circuit voltage, short circuit current density, and power conversion efficiency compared to control devices with blocking layers prepared by spin-coating liquid TiO2 precursor. We attribute the improved photovoltaic device performance to the structural integrity of ALD-coated TiO2 layer and consequently enhanced hole blocking effect that results in reduced dark leakage current and increased charge carrier lifetime.
Related Topics
Physical Sciences and Engineering
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Authors
Jinwei Li, Xi Chen, Weihe Xu, Chang-Yong Nam, Yong Shi,