A comparative study on the quantum-dot-sensitized, dye-sensitized and co-sensitized solar cells based on hollow spheres embedded porous TiO2 photoanodes
作者： Can Cui , Yiwei Qiu , Jiahuan Zhao , Bingqing Lu , Haihua Hu
DOI: 10.1016/J.ELECTACTA.2015.05.100
关键词: Nanoparticle 、 Optoelectronics 、 Porosity 、 Energy conversion efficiency 、 Materials science 、 Nanocrystal 、 Quantum dot 、 Solar cell 、 Light scattering 、 Photovoltaic system
摘要: Abstract TiO 2 hollow spheres (THS) of 400 nm in diameter are mixed into nanoparticles film as light scattering centers to improve the harvesting and photovoltaic performance solar cells based on CdS quantum-dot sensitized (TiO /CdS), N719 dye-sensitized /N719) CdS/N719 co-sensitized /CdS/N719) photoanodes, respectively. The three types highly dependent THS content films due to: (1) significant among or within THS, (2) extended pore size distribution, (3) modulated electron transport films. optimal is around 10% by weight for /CdS /CdS/N719 cells, 15% /N719 cell. It suggested that, high can facilitate aggregation large nanocrystals, which limits injection photo-generated electrons from serious internal recombination loss, thus decreases power conversion efficiency. cell with exhibits higher efficiency compared single-component cells.
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