A downshifting Eu3+ doped glass embedded with concave pyramid microstructure to improve the efficiency of silicon solar cell
来源期刊：Journal of Rare Earths2020年第11期
论文作者：Xing Yang Xing Yang Songsheng Zheng Chao Chen
文章页码：1158 - 1164
摘 要：The average photoelectric conversion efficiency（PCE） of a bare mono crystalline silicon solar cell is 14.71%±0.03% under AM1.5.It decreases to 14.20%±0.005% when covering an un-doped flat glass on the solar cell,and it goes down to 14.10%±0.005% by using a 5 wt% Eu3+ doped glass.The absorptions of the Eu3+doped CPM glass one-to-one match the excitation spectra at 362,381,393,400,413 and464 nm,which are related to the transitions of 7 F0→（5 D4,5 G2,5 L6,5 D3）,7 F1→5 D3,and 7 F0→5 D2,respectively.In addition,a concave pyramid microstructure（CPM） is embedded in the glass surface to increase light transmittance.The average PCE increases to 14.61%±0.07% when a 5 wt% Eu3+doped CPM glass covers on the silicon solar cell.Compared with the un-doped flat glass,a net increase of the PCE is0.41%,where the 0.16% increment of PCE is from the lighting trapping of the CPM structure,and the downshifting of near ultraviolet（NUV） light by Eu3+ ion donates the other 0.25% increment.It confirms that the as-prepared Eu3+ doped CPM glass has a good downshifting and antireflection function.
Xing Yang，Jiachao Chen，Songsheng Zheng，Chao Chen
College of Energy,Xiamen University
摘 要：The average photoelectric conversion efficiency（PCE） of a bare mono crystalline silicon solar cell is 14.71%±0.03% under AM1.5.It decreases to 14.20%±0.005% when covering an un-doped flat glass on the solar cell,and it goes down to 14.10%±0.005% by using a 5 wt% Eu3+ doped glass.The absorptions of the Eu3+doped CPM glass one-to-one match the excitation spectra at 362,381,393,400,413 and464 nm,which are related to the transitions of 7 F0→（5 D4,5 G2,5 L6,5 D3）,7 F1→5 D3,and 7 F0→5 D2,respectively.In addition,a concave pyramid microstructure（CPM） is embedded in the glass surface to increase light transmittance.The average PCE increases to 14.61%±0.07% when a 5 wt% Eu3+doped CPM glass covers on the silicon solar cell.Compared with the un-doped flat glass,a net increase of the PCE is0.41%,where the 0.16% increment of PCE is from the lighting trapping of the CPM structure,and the downshifting of near ultraviolet（NUV） light by Eu3+ ion donates the other 0.25% increment.It confirms that the as-prepared Eu3+ doped CPM glass has a good downshifting and antireflection function.
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