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

作者：Gonzalez Garcia Lola^*; Gonzalez Valls Irene; Lira Cantu Monica; Barranco Angel; Gonzalez Elipe Agustin R

来源：Energy & Environmental Science, 2011, 4(9): 3426-3435.

DOI：10.1039/c0ee00489h

Transparent 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 degrees and 85 degrees. Transparent thicker films with higher surface area deposited at the optimal angle of 70 degrees 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 mu m in a DSC resulted in a power conversion efficiency of 2.78% maintaining electrode transparency.

• 出版日期2011-9