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Title

Aligned TiO2 nanocolumnar layers prepared by PVD-GLAD for transparent dye sensitized solar cells

AuthorsGonzález-García, Lola; González-Valls, Irene; Lira-Cantú, Mónica ; Barranco, Ángel ; González-Elipe, Agustín R.
Issue Date2011
PublisherRoyal Society of Chemistry (Great Britain)
CitationEnergy and Environmental Science 4(9): 3426-3435 (2011)
AbstractTransparent thin film electrodes made of vertically aligned nanocolumns of TiO2 with well-controlled oblique angles were grown by physical vapor deposition at glancing incidence (PVD-GLAD). For an electrode thickness of 500 nm, we report a 40% variation on solar cell efficiency (from 0.6% to 1.04%) when the deposition angle was modified between 60° and 85°. Transparent thicker films with higher surface area deposited at the optimal angle of 70° were grown with a zigzag morphology which confers high mechanical strength to the thin films. Using this topology, the application of an electrode thickness of 3 m in a DSC resulted in a power conversion efficiency of 2.78% maintaining electrode transparency. © 2011 The Royal Society of Chemistry.
URIhttp://hdl.handle.net/10261/50942
DOI10.1039/c0ee00489h
Identifiersdoi: 10.1039/c0ee00489h
issn: 1754-5692
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