Cole Jacqueline M, Pepe Giulio, Al Bahri Othman K, Cooper Christopher B
Cavendish Laboratory, Department of Physics, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
ISIS Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, United Kingdom.
Chem Rev. 2019 Jun 26;119(12):7279-7327. doi: 10.1021/acs.chemrev.8b00632. Epub 2019 Apr 23.
Dye-sensitized solar cells (DSCs) are a next-generation photovoltaic technology, whose natural transparency and good photovoltaic output under ambient light conditions afford them niche applications in solar-powered windows and interior design for energy-sustainable buildings. Their ability to be fabricated on flexible substrates, or as fibers, also makes them attractive as passive energy harvesters in wearable devices and textiles. Cosensitization has emerged as a method that affords efficiency gains in DSCs, being most celebrated via its role in nudging power conversion efficiencies of DSCs to reach world-record values; yet, cosensitization has a much wider potential for applications, as this review will show. Cosensitization is a chemical fabrication method that produces DSC working electrodes that contain two or more different dyes with complementary optical absorption characteristics. Dye combinations that collectively afford a panchromatic absorption spectrum emulating that of the solar emission spectrum are ideal, given that such combinations use all available sunlight. This review classifies existing cosensitization efforts into seven distinct ways that dyes have been combined in order to generate panchromatic DSCs. Seven cognate molecular-engineering strategies for cosensitization are thereby developed, which tailor optical absorption toward optimal DSC-device function.
染料敏化太阳能电池（DSC）是一种下一代光伏技术，其天然的透明性以及在环境光条件下良好的光伏输出特性，使其在太阳能窗户和能源可持续建筑的室内设计中具有特定的应用。它们能够在柔性基板上制造，或者制成纤维状，这也使得它们作为可穿戴设备和纺织品中的无源能量收集器具有吸引力。共敏化已成为一种能够提高DSC效率的方法，通过其在推动DSC的功率转换效率达到世界纪录值方面的作用而备受瞩目；然而，正如本综述将展示的那样，共敏化具有更广泛的应用潜力。共敏化是一种化学制造方法，用于生产包含两种或更多具有互补光吸收特性的不同染料的DSC工作电极。鉴于此类组合利用了所有可用阳光，能够共同提供模拟太阳发射光谱的全色吸收光谱的染料组合是理想的。本综述将现有的共敏化研究工作分为七种不同的染料组合方式，以生成全色DSC。由此开发了七种相关的共敏化分子工程策略，这些策略针对最佳的DSC器件功能来调整光吸收。
