太阳能电池光谱转换材料的研究进展  

Research Progress on Spectral Conversion Materials for Solar Cells

作　　者：刘芷谕 乔旭升[1] 樊先平[1] Liu Zhiyu;Qiao Xusheng;Fan Xianping(School of Materials Science and Engineering,Zhejiang University,Hangzhou,Zhejiang 310058,China)

机构地区：[1]浙江大学材料科学与工程学院,浙江杭州310058

出　　处：《激光与光电子学进展》2021年第15期114-129,共16页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51672243,51872255)。

摘　　要：太阳光谱的能量低且高能量区域的光子响应较弱,导致单结太阳能电池的效率出现瓶颈,其中,光谱失配损失是限制太阳能电池效率的主要因素。采用光谱转换材料可将低响应波段的光子转换为高响应波段的光子,从而减少太阳能的光谱失配损失。光谱转换材料包括上转换(UC)、下转移(DS)、量子剪裁(QC)发光材料。在UC过程中,多个能量低于太阳能电池带隙的光子被转换为能量更高的光子;在DS过程中,一个高能量的光子被转换成一个能量较低的光子;在QC过程中,一个高能量光子被转换为多个能量较低的光子。这些经光谱转换的光子可被太阳能电池高效利用,从而提高其能量转换效率。因此,总结了不同种类太阳能电池的光谱适配条件,详述了UC、DS和QC发光材料的最新研究进展,并展望了利用光谱转换材料提高太阳能电池效率的未来发展方向。The efficiency of single-junction solar cells has a limitation due to the low energy of the solar spectrum and weak photon response in the high-energy region. The spectral mismatch loss is the main factor that limits the efficiency of solar cells. An effective way of reducing the spectral mismatch loss is using spectral conversion materials to convert photons in low response regions into photons in high response regions. Spectral conversion materials include up-conversion(UC), down-shifting(DS), and quantum cutting(QC) luminescent materials. In the UC process, multiple photons with energies lower than the bandgap of the solar cell are converted into higher-energy photons. In the DS process, a high-energy photon is converted into a low-energy photon. In the QC process, a highenergy photon is converted into multiple low-energy photons. These spectrally converted photons can be efficiently used by solar cells, improving their energy conversion efficiency. Therefore, this study summarizes the spectral adaptation conditions of different types of solar cells, details the latest research progress of UC, DS, and QC luminescent materials and give a prospect of the future development direction of using spectral conversion materials to improve the efficiency of solar cells.

关 键 词：材料 光谱转换材料 太阳能电池 量子剪裁 

分 类 号：O756[理学—晶体学]