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A simple template-free 'sputtering deposition and selective etching' process for nanoporous thin films and its application to dye-sensitized solar cells
- Authors
- Nahm, Changwoo; Choi, Hongsik; Kim, Jongmin; Byun, Sujin; Kang, Suji; Hwang, Taehyun; Park, Helen Hejin; Ko, Jaejung; Park, Byungwoo
- Issue Date
- 13-9월-2013
- Publisher
- IOP PUBLISHING LTD
- Citation
- NANOTECHNOLOGY, v.24, no.36
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 24
- Number
- 36
- ISSN
- 0957-4484
- Abstract
- A facile and straightforward method is suggested to synthesize nanoporous-TiO2 thin films for dye-sensitized solar cells (DSSCs). Silver/TiO2 co-sputtering led to the formation of nanocomposite films which consisted of silver nanoclusters with surrounding TiO2 matrices, and metal particles were subsequently etched by just immersing in nitric acid. Nanoporous-TiO2 DSSCs fabricated by this simple and effective process showed power-conversion efficiencies of up to 3.4% at a thickness of only 1.8 mu m, which is much superior to that of conventional nanoparticulate-TiO2 DSSCs with similar thickness.
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