ZdraŽil Lukáš, Kalytchuk Sergii, Holá Kateřina, Petr Martin, Zmeškal Oldřich, Kment Štěpán, Rogach Andrey L, Zbořil Radek
Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
Nanoscale. 2020 Mar 28;12(12):6664-6672. doi: 10.1039/c9nr10029f. Epub 2020 Feb 21.
Luminescent solar concentrators (LSCs) are light-management devices and are used for harvesting and concentrating solar light from a large area to their edges. Being semitransparent devices, LSCs show great promise for future utilization in glass walls of urban buildings as environmentally friendly photovoltaic power plants. The development of cheap and eco-safe materials, the extension of the LSC operation range, and the enhancement of the optical efficiency are the key challenges, which need to be solved in order to transform energetically passive buildings into self-sustainable units. Herein, a large area (64 cm) tandem LSC fabricated using entirely eco-friendly highly emissive blue, green, and red carbon dots is demonstrated, with an internal optical quantum efficiency of 23.6% and an external optical quantum efficiency of 2.3%, while maintaining a high transparency across the visible spectrum. This opens up a new direction for the application of carbon dots in advanced solar light harvesting technologies.
发光太阳能聚光器（LSCs）是光管理装置，用于从大面积收集太阳光并将其聚集到边缘。作为半透明装置，LSCs在城市建筑玻璃墙中作为环保型光伏电站具有广阔的未来应用前景。开发廉价且生态安全的材料、扩大LSC的工作范围以及提高光学效率是关键挑战，为了将能源被动型建筑转变为自我可持续单元，这些挑战需要得到解决。在此，展示了一种大面积（64厘米）的串联LSC，它完全由环保型高发射率的蓝色、绿色和红色碳点制成，内部光学量子效率为23.6%，外部光学量子效率为2.3%，同时在可见光谱范围内保持高透明度。这为碳点在先进太阳光收集技术中的应用开辟了新方向。
