本文選題：光電子學(xué) + 光吸收　； 參考：《光子學(xué)報》2017年04期

【摘要】：設(shè)計了一維雙層余弦共形光柵結(jié)構(gòu)的單晶硅薄膜太陽能電池.利用時域有限差分法模擬計算了雙層余弦共形光柵結(jié)構(gòu)和對照組結(jié)構(gòu)的吸收光譜;利用歸一化光吸收密度的概念,定量分析了300~700nm和700~1 100nm兩個波段的光吸收效率.結(jié)果表明雙層共形光柵結(jié)構(gòu)具有更好的全波段吸收效率,且在長波段余弦光柵比矩形光柵具有更好的光捕獲和吸收作用.利用光吸收增強譜和電磁場強度分布圖,分析了余弦光柵在長波段的吸收增強機理.通過計算短路電流密度,發(fā)現(xiàn)雙層余弦共形光柵結(jié)構(gòu)比平板結(jié)構(gòu)太陽能電池的短路電流密度提高了79.5%,余弦光柵結(jié)構(gòu)比矩形光柵結(jié)構(gòu)的短路電流密度提高了8.5%.
[Abstract]:A single crystal silicon thin film solar cell with one-dimensional double-layer cosine conformal grating structure is designed. The absorption spectra of the double CoSine conformal grating and the control structure are simulated by using the finite-difference time-domain method, and the optical absorption efficiencies of the 300~700nm and 700-1 100nm bands are quantitatively analyzed by using the concept of normalized optical absorption density. The results show that the double-layer conformal grating structure has better absorption efficiency and has better optical capture and absorption than rectangular grating in long wavelength cosine grating. The absorption enhancement mechanism of cosine grating in long wavelength band is analyzed by means of optical absorption enhancement spectrum and electric magnetic field intensity distribution. By calculating the short circuit current density, it is found that the short circuit current density of the double CoSine conformal grating is 79.5 higher than that of the flat panel solar cell, and the short circuit current density of the CoSine grating is 8.5% higher than that of the rectangular grating.
【作者單位】： 合肥工業(yè)大學(xué)機械工程學(xué)院安徽省數(shù)字化設(shè)計與制造重點實驗室;
【基金】：國家自然科學(xué)基金重點項目(No.51435003)資助~~
【分類號】：TM914.4

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