TiO2 compact layer for dye-sensitized SnO2 nanocrystalline thin film
作者： Hui Yang , Pan Li , Jingbo Zhang , Yuan Lin
DOI: 10.1016/J.ELECTACTA.2014.09.098
关键词: Thin film 、 Tin oxide 、 Nanocrystalline material 、 Materials science 、 Electrolyte 、 Dielectric spectroscopy 、 Solar cell 、 Optoelectronics 、 Layer (electronics) 、 Substrate (electronics)
摘要: Abstract A TiO 2 compact layer was coated on fluorine-doped tin oxide (FTO) glass substrate prior to deposition of SnO nanocrystalline thin film suppress backflow electrons from FTO the film. The resultant used as a photoelectrode fabricate dye-sensitized solar cell. For comparison, also prepared discuss effect electron process. Compared with cell without layer, light-to-electric conversion efficiency for improved by 82.1% and it even 41.7% compared layer. Electrochemical impedance spectroscopy open-circuit voltage decay cells were measured demonstrate improvement mechanism due Both recombination resistance at photoelectrode/electrolyte interface lifetime increased introduction Because conduction band is higher than that , acts not only physical barrier separate electrolyte, thus suppressing but potential effectively block
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