聚乙二醇对PTB7:PC_(70)BM太阳电池的影响
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摘要
对以PTB7:PC_(70)BM为体系的聚合物太阳电池(BHJ)的阳极修饰层PEDOT:PSS中掺杂聚乙二醇(PEG)的方法进行研究,发现阳极修饰层中掺杂不同浓度的PEG后,器件的各项性能均有所提升。通过电流电压(I-V)测试、电容-电压(C-V)测试、外量子效率(EQE)测试、及不同浓度PEG下PEDOT:PSS的电导率的测量发现,在PEDOT:PSS中掺杂体积比为1%的PEG时,太阳电池器件的填充因子(FF)、短路电流(J_(sc))等有明显提升。其光电转换效率从5.88%升至6.48%,比基础器件提高10%。
The effect of adding different volume ratio polyethylene glycol(PEG) on the performance of bulk heterojunction(BHJ)organic solar cells based on poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophene-4,6-diyl]](PTB7)and[6,6]-phenyl-C70-butyric acid methyl ester(PC_(70) BM)was investigated. Under capacitance-voltage(C-V)measurement and I-V measurement,it provwres that devices with 1% volume ratio PEG exhibit higher current density( J_(sc)),fill factor(FF)and power conversion efficiency(PCE)from 5.88% to 6.48%,10% higher than that of the device without the incorporation of PEG.
The effect of adding different volume ratio polyethylene glycol(PEG) on the performance of bulk heterojunction(BHJ)organic solar cells based on poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophene-4,6-diyl]](PTB7)and[6,6]-phenyl-C70-butyric acid methyl ester(PC_(70) BM)was investigated. Under capacitance-voltage(C-V)measurement and I-V measurement,it provwres that devices with 1% volume ratio PEG exhibit higher current density( J_(sc)),fill factor(FF)and power conversion efficiency(PCE)from 5.88% to 6.48%,10% higher than that of the device without the incorporation of PEG.
引文
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[17] Cho Shinuk,Kim Kwang-Dae,Heo Jinhee,et al. Role of additional PCBM layer between ZnO and photoactive layers in inverted bulk-heterojunction solar cells[J].Scientific Reports,2014,4:4306.
[2] Moliton A,Nunzi J M. How to model the behaviour of organic photovoltaic cells[J]. Polymer International,2006,55(6):583—600.
[3] Liang Yongye, Yu Luping. Development of semiconducting polymers for solar energy harvesting[J].Polymer Reviews,2010,50(4):454—473.
[4] Hau S K,Yip Hin-Lap,Jen A K-Y. A review on the development of the inverted polymer solar cell architecture[J]. Polymer Reviews,2010,50(4):474—510.
[5] Lyu Peiwen,Chen Shan-Ci,Zheng Qingdong,et al.High electron mobility ZnO film for high-performance inverted polymer solar cells[J]. Applied Physics Letters,2015,106(16):163902.
[6] Kim Kun Ho,Gong Su Cheol,Chang Ho Jung. Effects of anode buffer layers on the properties of organic solar cells[J]. Thin Solid Films,2012,521:69—72.
[7] Lampande R,Kim Gyeong Woo,Boizot J,et al. A highly efficient transition metal oxide layer for hole extraction and transport in inverted polymer bulk heterojunction solar cells[J]. Journal of Materials Chemistry A,2013,1(23):6895—6900.
[8] Wang Guojie, Jiu Tonggang, Tang Gang, et al.Interface modification of ZnO-based inverted PTB7:PC71BM organic solar cells by cesium stearate and simultaneous enhancement of device parameters[J].ACS Sustainable Chemistry&Engineering,2014,2(5):1331—1337.
[9] Kim Yong Hyun,Sachse C,Machala M L,et al. Highly conductive PEDOT:PSS electrode with optimized solvent and thermal post-treatment for ITO-free organic solar cells[J]. Advanced Functional Materials,2011,21(6):1076—1081.
[10] Chu Chih Wei,Mengistie D A,Wang Peng Cheng.Effect of molecular weight of additives on the conductivity of PEDOT:PSS and efficiency for ITO-free organic solar cells[J]. Journal of Materials Chemistry A,2013,1(34):9907—9915.
[11] Tai Qidong,Li Jinhua,Liu Zhike,et al. Enhanced photovoltaic performance of polymer solar cells by adding fullerene end-capped polyethylene glycol[J].Journal of Materials Chemistry,2011,21(19):6848—6853.
[12] Kim Yong Hyun,Sachse C,Machala M L,et al. Highly conductive PEDOT:PSS electrode with optimized solvent and thermal post-treatment for ITO-free organic solar cells[J]. Advanced Functional Materials,2011,21(6):1076—1081.
[13] Li Xiong,Hu Yufeng,Deng Zhenbo,et al. Efficient polymer solar cells with polyethylene glycol cathode buffer layer and improved PEDOT:PSS conductivity[J]. Physica Status Solidi(A),2015,212(8):1800—1804.
[14] Lang U,Müller E,Naujoks N,et al. Microscopical investigations of PEDOT:PSS thin films[J]. Advanced Functional Materials,2009,19(8):1215—1220.
[15] Jia Tao, Han Jianxiong, Zhou Weilong, et al.Application of a water-soluble metallophthalocyanine derivative as a cathode interlayer for the polymer solar cells[J]. Solar Energy Materials and Solar Cells,2015,141:93—100.
[16] Zhou Huiqiong,Zhang Yuan,Seifter J,et al. Highefficiency polymer solar cells enhanced by solvent treatment[J]. Advanced Materials, 2013, 25(11):1646—1652.
[17] Cho Shinuk,Kim Kwang-Dae,Heo Jinhee,et al. Role of additional PCBM layer between ZnO and photoactive layers in inverted bulk-heterojunction solar cells[J].Scientific Reports,2014,4:4306.