利用叠层一维光子晶体调控半透明有机太阳能电池的性能

利用叠层一维光子晶体提高半透明有机太阳能电池的光电转换效率和调控器件的透视颜色.采用传输矩阵法计算了基于叠层一维光子晶体的半透明有机太阳能电池中活性层的吸收光谱和器件的透过率光谱, 进而计算了器件的光电转换效率和透视颜色.研究结果表明, 通过合理设计叠层一维光子晶体中顶光子晶体和底光子晶体的禁带中心波长, 可以将器件的光电转换效率提高24.4%.此外, 通过控制顶光子晶体和底光子晶体的禁带中心波长, 可以调控半透明有机太阳能电池的透视颜色, 获得透视颜色分别为蓝色、绿色和红色的半透明电池器件.与单层一维光子晶体相比, 叠层一维光子晶体可以使器件获得更高的光电转换效率, 并能在更大光谱范围内调控器件的透视颜色.

Abstract

Tandem One-Dimensional Photonic Crystals (1DPCs) are employed to improve the photovoltaic conversion efficiency of the semitransparent organic solar cells and tailor the see-though colors of the devices. Transfer matrix method is employed to calculate the absorption in the active layer and transmission spectra of the devices. With these calculated data as inputs, the photovoltaic conversion efficiency and the see-though colors are calculated. It is revealed that an improvement of 24.4% in the photovoltaic conversion efficiency is achieved by tailoring the center wavelength of the bandgap of the top 1DPCs and bottom 1DPCs in the tandem 1DPCs. In addition, the see-through colors of the device can be tuned by tailoring the center wavelength of the bandgap of the top 1DPCs and bottom 1DPCs. Correspondingly, semitransparent organic solar cells with different see-through colors such as blue, green and red can be obtained. Compared with the single 1DPCs, tandem 1DPCs can lead to higher improvement in PCE and broader tunable range of the see-through color of the devices.

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梁文跃, 钟锦耀, 徐海涛, 邓海东, 王奇生, 龙拥兵. 利用叠层一维光子晶体调控半透明有机太阳能电池的性能[J]. 光子学报, 2018, 47(8): 0823003. LIANG Wen-yue, ZHONG Jin-yao, XU Hai-tao, DENG Hai-dong, WANG Qi-sheng, LONG Yong-bing. Tailoring the Performance of Semitransparent Organic Solar Cells by Tandem One-dimensional Photonic Crystals[J]. ACTA PHOTONICA SINICA, 2018, 47(8): 0823003.

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