全频谱驱动的UV可见到NIR光子向下转换光体向晶太阳能电池应用
Zhuowei Li1, Qingfeng Bian2, Ge Zhu2
1Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, PR China; Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, College of Physics and Materials Engineering, Dalian Minzu University, Dalian, Liaoning 116600, PR China.
Journal of colloid and interface science
|May 2, 2025
概括
研究人员开发了一种新,Ca3ScHfAlSi2O12:Eu2+,Nd3+,以克服晶太阳能电池的效率限制. 这种材料有效地将紫外线可见光转化为近红外光,提高太阳能电池的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 太阳能光伏发电是如何实现的
- 固态化学 固态化学
背景情况:
- 晶体 (c-Si) 太阳能电池面临由于光谱不匹配的效率瓶,限制功率转换效率 (PCE) 约30%.
研究的目的:
- 开发一种高效的全频光子向下转换材料,能够将紫外线 (UV) 和可见光转换为近红外线 (NIR) 光,用于增强的c-Si太阳能电池PCE.
主要方法:
- 合成并描述了一种新的,Ca3ScHfAlSi2O12:Eu2+,Nd3+.
- 分析了分散反射和光发光激发光谱,以确认超宽带吸收 (250-750 nm).
- 使用光谱学和光衰变曲线研究了NIR发射光谱 (780nm,900nm,1064nm) 和能量传递机制.
主要成果:
- 体同时表现出UV可见到NIR光子向下转换,有效的能量转移 (56.62%) 从Eu2+到Nd3+.
- 在使用制造的转换层的300-800nm范围内的c-Si太阳能电池中,证明了光子灵敏度和外部量子效率的提高.
结论:
- 开发的提供了一种有效的策略,用于全频谱驱动的UV可见到NIR光子向下转换.
- 突出了具有超宽带吸收的的潜力,用于推进光伏能源转换技术.
相关概念视频
P-N junction
394
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
394
UV–Vis Spectrometers
1.2K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.2K


