Hosseini Zahra, Taghavinia Nima, Wei-Guang Diau Eric
Faculty of Advanced Technologies, Shiraz University, Shiraz, 71946-84560, Iran.
Physics Department and Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588, Iran.
Chemphyschem. 2017 Dec 6;18(23):3292-3308. doi: 10.1002/cphc.201700920. Epub 2017 Nov 7.
Relative to the broadband solar spectrum, a narrow range of spectral absorption of photovoltaic (PV) devices is considered an important determinant that the efficiency of light harvesting of these devices is less than unity. Having the narrowest spectral response to solar radiation among all PV devices, dye-sensitized solar cells (DSSCs) suffer severely from this loss. Luminescent spectral conversion provides a mechanism to manipulate and to adapt the incident solar spectrum by converting, through photoluminescence, the energies of solar photons into those that are more effectively captured by a PV device. This mechanism is particularly helpful for DSSCs because there is much flexibility in both the choice of the light-harvesting materials and the architecture of the DSSC. Here we review and discuss recent advances in the field of luminescent spectral conversion for DSSCs. The focus is on the architectural design of DSSCs, and the complications, advantages and new functionalities offered by each of their configurations are discussed. The loss mechanisms are examined and important parameters governing the spectral conversion mechanism of a DSSC are introduced.
相对于宽带太阳光谱，光伏（PV）器件较窄的光谱吸收范围被认为是这些器件光捕获效率小于1的一个重要决定因素。在所有光伏器件中，染料敏化太阳能电池（DSSC）对太阳辐射的光谱响应最窄，因此受这种损失的影响严重。发光光谱转换提供了一种机制，通过光致发光将太阳光子的能量转换为能被光伏器件更有效捕获的能量，从而操纵和适配入射太阳光谱。这种机制对染料敏化太阳能电池特别有用，因为在光捕获材料的选择和染料敏化太阳能电池的结构方面都有很大的灵活性。在这里，我们回顾并讨论染料敏化太阳能电池发光光谱转换领域的最新进展。重点是染料敏化太阳能电池的结构设计，并讨论了其每种配置带来的复杂性、优点和新功能。研究了损失机制，并介绍了控制染料敏化太阳能电池光谱转换机制的重要参数。
