Zhou Ziyao, Wang Jiahong, Nan Fan, Bu Chenghao, Yu Zhenhua, Liu Wei, Guo Shishang, Hu Hao, Zhao Xing-Zhong
School of Physics and Technology, Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China.
Nanoscale. 2014 Feb 21;6(4):2052-5. doi: 10.1039/c3nr04315k. Epub 2013 Dec 24.
Upconversion materials have been employed as energy relay materials in dye sensitized solar cells (DSCs) to broaden the range of light absorption. However, the origin of the enhancements can be induced by both upconversion and size-dependent light scattering effects. To clarify the role of the upconversion material in the photoelectrode of DSCs, an upconversion induced device was realized here, which has the size-dependent light scattering effect eliminated via the application of NaYF4:Er(3+), Yb(3+)@SiO2 upconversion nanoparticles (β-NYEY@SiO2 UCNPs). An enhancement of 6% in efficiency was observed for the device. This demonstration provided an insight into the possible further employment of upconversion in DSCs.
上转换材料已被用作染料敏化太阳能电池（DSC）中的能量中继材料，以拓宽光吸收范围。然而，这种增强效应的来源可能是由上转换和尺寸依赖的光散射效应共同引起的。为了阐明上转换材料在DSC光电极中的作用，本文制备了一种上转换诱导器件，通过应用NaYF4:Er(3+)、Yb(3+)@SiO2上转换纳米颗粒（β-NYEY@SiO2 UCNPs）消除了尺寸依赖的光散射效应。该器件的效率提高了6%。这一演示为上转换在DSC中的进一步应用提供了思路。
