Chen Yuan, Liu Qing, Lin Han, Yan Xiaohong
College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China.
Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing, P. R. China.
Luminescence. 2018 May;33(3):505-510. doi: 10.1002/bio.3439. Epub 2018 Jan 9.
According to the spectral distribution of solar radiation at the earth's surface, under the excitation region of 1150 to 1350 nm, the up-conversion luminescence of Tm ions was investigated. The emission bands were matched well with the spectral response region of silicon solar cells, achieved by Tm ions single-doped yttrium fluoride (YF ) phosphor, which was different from the conventional Tm /Yb ion couple co-doped materials. Additionally, the similar emission bands of Tm ions were achieved under excitation in the ultraviolet region. It is expected that via up-conversion and down-conversion routes, Tm -sensitized materials could convert photons to the desired wavelengths in order to reduce the energy loss of silicon solar cells, thereby enhancing the photovoltaic efficiency.
根据地球表面太阳辐射的光谱分布，在1150至1350纳米的激发区域下，研究了铥离子的上转换发光。通过单掺杂铥离子的氟化钇（YF）荧光粉实现的发射带与硅太阳能电池的光谱响应区域匹配良好，这与传统的铥/镱离子对共掺杂材料不同。此外，在紫外区域激发下也实现了铥离子类似的发射带。预计通过上转换和下转换途径，铥敏化材料可以将光子转换为所需波长，以减少硅太阳能电池的能量损失，从而提高光伏效率。
