Dye-sensitized solar cells for efficient power generation under ambient lighting
Dye-sensitized solar cells for efficient power generation under ambient lighting
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DOI：
10.1038/nphoton.2017.60
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发表时间：
2017-06-01
期刊：
影响因子：
35
通讯作者：
Hagfeldt, Anders
中科院分区：
文献类型：
--
作者：
Freitag, Marina;Teuscher, Joel;Hagfeldt, Anders
在室内照明下高效运行的太阳能电池具有极大的实际意义，因为它们可以用作便携式电子设备和无线传感器网络或物联网设备的电源。在这里，我们展示了一种染料敏化太阳能电池（DSC），在环境光条件下实现了非常高的功率转换效率（PCE）。我们的光系统结合了两个明智设计的敏化剂，编码D35和XY 1，与铜络合物Cu（II/I）（tmby）作为氧化还原梭（tmby，4，4 '，6，6'-四甲基-2，2 '-联吡啶），并且具有1.1V的高开路光电压。DSC实现了超过90%的光电流产生的外量子效率在400至650 nm的整个可见光范围内，在Osram 930型暖白荧光灯管的照射下，在200和1，000勒克斯下分别实现15.6和88.5 μ W cm（-2）的功率输出。这意味着PCE为28.9%。
Solar cells that operate efficiently under indoor lighting are of great practical interest as they can serve as electric power sources for portable electronics and devices for wireless sensor networks or the Internet of Things. Here, we demonstrate a dye-sensitized solar cell (DSC) that achieves very high power-conversion efficiencies (PCEs) under ambient light conditions. Our photosystem combines two judiciously designed sensitizers, coded D35 and XY1, with the copper complex Cu(II/I)(tmby) as a redox shuttle (tmby, 4,4', 6,6'-tetramethyl-2,2'-bipyridine), and features a high open-circuit photovoltage of 1.1 V. The DSC achieves an external quantum efficiency for photocurrent generation that exceeds 90% across the whole visible domain from 400 to 650 nm, and achieves power outputs of 15.6 and 88.5 mu W cm(-2) at 200 and 1,000 lux, respectively, under illumination from a model Osram 930 warm-white fluorescent light tube. This translates into a PCE of 28.9%.