title: A simple and efficient method using polymer dispersion to prepare controllable nanoporous TiO2 anodes for dye-sensitized solar cells.
abstract: An efficient method using a polymer dispersion (PD) based on a copolymer of styrene and butyl acrylate to prepare TiO2 electrodes for dye-sensitized solar cells (DSCs) was introduced. The obtained TiO2 nanoporous film was investigated by scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis. A porous structure with pore size distribution from tens of nanometers to several hundred nanometers or even micrometers was characterized. This offered the film a feature of high haze factor and porosity. When using the film as photoanode, a quasi-solid-state DSC was successfully fabricated. The device showed an improved per-weight-efficiency by a factor of 2.7, resulting from the reduced interfacial resistance and the enhanced light scattering effect revealed by electrochemical impedance spectroscopy and transmittance spectroscopy, respectively. The developed PD-based colloid is promising to be applied in production on a large scale as a result of its simple prescription and stability during storage. A proposal to further improve the porous film is also introduced at the end of the paper.
authors: Key Lab of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China.
authors: Jiaoli
authors: J
authors: Li
authors: Liduo
authors: L
authors: Wang
authors: Xiangming
authors: X
authors: Kong
authors: Beibei
authors: B
authors: Ma
authors: Yantao
authors: Y
authors: Shi
authors: Chun
authors: C
authors: Zhan
authors: Yong
authors: Y
authors: Qiu