School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, U.K.
Adv Mater. 2017 Jul;29(28). doi: 10.1002/adma.201606491. Epub 2017 May 19.
Single-junction photovoltaic devices exhibit a bottleneck in their efficiency due to incomplete or inefficient harvesting of photons in the low- or high-energy regions of the solar spectrum. Spectral converters can be used to convert solar photons into energies that are more effectively captured by the photovoltaic device through a photoluminescence process. Here, recent advances in the fields of luminescent solar concentration, luminescent downshifting, and upconversion are discussed. The focus is specifically on the role that materials science has to play in overcoming barriers in the optical performance in all spectral converters and on their successful integration with both established (e.g., c-Si, GaAs) and emerging (perovskite, organic, dye-sensitized) cell types. Current challenges and emerging research directions, which need to be addressed for the development of next-generation luminescent solar devices, are also discussed.
单结光伏器件由于在太阳光谱的低能或高能区域对光子的不完全或低效收集，其效率存在瓶颈。光谱转换器可用于通过光致发光过程将太阳能光子转换为更有效地被光伏器件捕获的能量。本文讨论了在发光太阳能集中、发光下转换和上转换领域的最新进展。重点特别放在材料科学在克服所有光谱转换器中的光学性能障碍以及将它们与成熟（例如，c-Si、GaAs）和新兴（钙钛矿、有机、染料敏化）电池类型成功集成方面所发挥的作用。还讨论了为开发下一代发光太阳能器件需要解决的当前挑战和新兴研究方向。
