Upright-standing SnO2 nanowalls: Fabrication, dual-photosensitization and photovoltaic properties
- Upright-standing SnO2 nanowalls: Fabrication, dual-photosensitization and photovoltaic properties
- Dipak V. Shinde; Iseul Lim; 김창삼; 이중기; Rajaram S. Mane; Sung-Hwan Han
- Upright-standing SnO2 nanowalls; Fabrication; dual-photosensitization; photovoltaic properties
- Issue Date
- Chemical physics letters
- VOL 542, 66-69
- We report on fabrication of upright-standing SnO2 nanowalls aligned on FTO substrates by a facile wet
chemical method at low temperature. These nanowalls are dual-photosensitized with CdS quantum dots
and Z907 dye molecules in order to construct panchromatic dye-sensitized solar cells. We demonstrate
that thin CdS quantum dot layer not only acts as a blocking layer preventing recombination of charge carriers,
but also contributes as a light absorber. A 158% improvement in power conversion efficiency is
observed, which is attributed to improved light absorption, reduced recombination and improved charge
collection in presence of CdS quantum dot interlayer.
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