基于PCBM电子传输层的有机太阳能电池理论研究
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摘要
利用AMPS-1D软件研究以富勒烯衍生物(PCBM)作为电子缓冲层的有机太阳能电池微观机理。研究结果表明,添加PCBM材料作为器件的电子缓冲层,能减小空穴-电子的复合率和提高空穴-电子的寿命,进而提高有机太阳能电池开路电压、短路电流密度、填充因数以及光电转化效率。PCBM材料的厚度对开路电压影响较小,但器件的短路电流密度随着PCBM厚度的不断增加有明显的提高。
It was studied the electron microscopic mechanism of heterojunction organic solar cells based on PCBM electronic buffer layer by AMPS-1 D software.The results showed that it could reduce hole-electron recombination rate and improved the life of hole-electron by adding PCBM material as a device of electronic buffer layer.Whence the open circuit voltage,short circuit current density,fill factor and the photoelectric conversion were efficiency improved.The effect of thickness of PCBM material on the open circuit voltage was small.But the short circuit current density of device was obvious increased with increasing PCBM thickness.
It was studied the electron microscopic mechanism of heterojunction organic solar cells based on PCBM electronic buffer layer by AMPS-1 D software.The results showed that it could reduce hole-electron recombination rate and improved the life of hole-electron by adding PCBM material as a device of electronic buffer layer.Whence the open circuit voltage,short circuit current density,fill factor and the photoelectric conversion were efficiency improved.The effect of thickness of PCBM material on the open circuit voltage was small.But the short circuit current density of device was obvious increased with increasing PCBM thickness.
引文
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[2]Kang M G,Xu T,Park H J,et al.Efficiency enhancement of organic solar cells using transparent plasmonic Ag nanowire electrodes[J].Advanced Materials,2010,22(39):4378-4383.
[3]Brabec C J,Shaheen S E,Winder C,et al.Effect of LiF/metal electrodes on the performance of plastic solar cells[J].Applied Physics Letters,2002,80(7):1288-1290.
[4]Vivo P,Jukola J,Ojala M,et al.Influence of Alq3/Au cathode on stability and efficiency of a layered organic solar cell in air[J].Solar Energy Materials and Solar Cells,2008,92(11):1416-1420.
[5]Fukuda T,Takagi K,Liao Y.Insertion of fullerene layer for bulk heterojunction organic photovoltaic cell fabricated by electrospray deposition method[J].Physica Status Solidi(RRL)-Rapid Research Letters,2013,7(12):1055-1058.
[6]木丽萍,谢勇,谢再新.超薄PCBM层提高有机太阳电池效率[J].电子元件与材料,2012,31(12):64-66.
[7]Omer B M.Effect of valence band tail width on the open circuit voltage of P3HT∶PCBM bulk heterojunction solar cell:AMPS-1D simulation study[J].Chinese Physics Letters,2015,32(8):088801.
[8]Babiker S G,Shuai Y.Simulation of organic solar cells using AMPS-1Dprogram[J].Research Journal of Applied Sciences,Engineering and Technology,2012,4(5):495-499.
[9]Wang J C,Ren X C,Shi S Q,et al.Charge accumulation induced S-shape J-V curves in bilayer heterojunction organic solar cells[J].Organic Electronics,2011,12(6):880-885.
[10]Chen A,Zhu K,Shao Q,et al.Understanding the effects of TCO work function on the performance of organic solar cells by numerical simulation[J].Semiconductor Science and Technology,2016,31(6):065025.
[11]Scharber M C,Muhlbacher D,Koppe M,et al.Design rules for donors in bulk-heterojunction solar cells-Towards 10%energy-conversion efficiency[J].Advanced Materials,2006,18(6):789-794.
[12]Liu Z,Lee E C.Efficiency improvement in fullerene-layer-inserted organic bulk-heterojunction solar cells[J].Journal of Applied Physics,2012,111(2):023104.