Low-Temperature UV Processing of Nanoporous SnO2 Layers for Dye-Sensitized Solar Cells
Language
en
Article de revue
This item was published in
ACS Applied Materials & Interfaces. 2011-05-25, vol. 3, n° 5, p. 1485-1491
Washington, D.C. : American Chemical Society
English Abstract
Connection of SnO2 particles by simple UV irradiation in air yielded cassiterite SnO2 porous films at low temperature. XPS, FTIR, and TGA-MS data revealed that the UV treatment has actually removed most of the organics ...Read more >
Connection of SnO2 particles by simple UV irradiation in air yielded cassiterite SnO2 porous films at low temperature. XPS, FTIR, and TGA-MS data revealed that the UV treatment has actually removed most of the organics present in the precursor SnO2 colloid and gave more hydroxylated materials than calcination at high temperature. As electrodes for dye-sensitized solar cells (DSCs), the N3-modified 1−5 μm thick SnO2 films showed excellent photovoltaic responses with overall power conversion efficiency reaching 2.27% under AM1.5G illumination (100 mW cm−2). These performances outperformed those of similar layers calcined at 450 °C mostly due to higher Voc and FF. These findings were rationalized in terms of slower recombination rates for the UV-processed films on the basis of dark current analysis, photovoltage decay, and electrical impedance spectroscopy studies.Read less <
English Keywords
tin dioxide
low-temperature processing
UV irradiation
dye-sensitized solar cells
Origin
Hal imported