Solar cell performance improvement via photoluminescence conversion of Si nanoparticles  

作　　者：张淼 任勇 程丹辰 陆明 

机构地区：[1]Department of Optical Science and Engineering,Key Laboratory for Micro and Nano Photonic Structures(MOE),Fudan University

出　　处：《Chinese Optics Letters》2012年第6期81-83,共3页中国光学快报（英文版）

基　　金：supported by the National Basic Research Program of China (No. 2010CB933703);the National Natural Science Foundation of China (No.60878044)

摘　　要：Photoluminescence （PL） conversion of Si nanoparticles by absorbing ultraviolet （UV） lights and emitting visible ones has been used to improve the efficiency of crystalline Si solar cells. Si nanoparticle thin films are prepared by pulverizing porous Si in ethanol and then mixing the suspension with a SiO2 sol-gel （SOG）. This SOG is spin-deposited onto the surface of the Si solar cells and dries in air. The short-circuit current as a function of Si nanoparticle concentration is investigated under UV illumination. The maximal increase is found at a Si concentration of 0.1 mg/mL. At such concentration and under the irradiation of an AM0 solar simulator, the photoelectric conversion efficiency of the crystalline Si solar cell is relatively increased by 2.16% because of the PL conversion.Photoluminescence （PL） conversion of Si nanoparticles by absorbing ultraviolet （UV） lights and emitting visible ones has been used to improve the efficiency of crystalline Si solar cells. Si nanoparticle thin films are prepared by pulverizing porous Si in ethanol and then mixing the suspension with a SiO2 sol-gel （SOG）. This SOG is spin-deposited onto the surface of the Si solar cells and dries in air. The short-circuit current as a function of Si nanoparticle concentration is investigated under UV illumination. The maximal increase is found at a Si concentration of 0.1 mg/mL. At such concentration and under the irradiation of an AM0 solar simulator, the photoelectric conversion efficiency of the crystalline Si solar cell is relatively increased by 2.16% because of the PL conversion.

关 键 词：Conversion efficiency Crystalline materials ETHANOL Nanoparticles PHOTOLUMINESCENCE Porous silicon Silicon solar cells SOL GELS 

分 类 号：TM914.41[电气工程—电力电子与电力传动]