Effects of Magnetic Field on the Film Morphology and Photoelectric Properties of the Active Layer P3HT:PCBM
-
摘要: 以P3HT(Poly (3-Hexylthiophene))为电子给体, PCBM ([6, 6]-Phenyl C61 Butyric Acid Methyl Ester)为电子受体, 在活性层P3HT:PCBM的退火过程中, 利用磁场对活性层有机分子的排列取向作用, 制备了有机体异质结太阳能电池。研究结果表明:当磁场强度为0.9MA/m时, 器件的短路电流密度从7.414A/cm2提高到8.332A/cm2, 填充因子也相应地增加, 但开路电压却有所降低, 最高的光电转换效率为2.562%。由光致发光光谱和原子力显微图像可知, 磁场对活性层的结晶度、内部分子排列和表面形貌都有明显的影响。Abstract: A series of poly (3-hexylthiophene)(P3HT)/[6, 6]-phenyl-C61 butyric acid methyl ester (PCBM) bulk heterojunction polymer solar cells were fabricated via a simple method, i.e.applying an external magnetic field on the active layer in its annealing process, which is based on the magnetic field effect on the alignment of the active layer's molecules.The experimental results demonstrate that the maximum photoelectric conversion efficiency (PCE) of 2.562% is achieved when the magnetic intensity is 0.9MA/m.The short-circuit current density is raised from 7.414mA/cm2 to 8.332mA/cm2, and the fill factor from 0.512% to 0.543%, but the open-circuit voltage almost remains the same.As characterized by the photoluminescence spectrum and atomic force microscope (AFM), the magnetic field had obvious effects on the molecular alignment and the crystallinity of the active layer and the surface morphology of film.
-
Key words:
- polymer solar cells /
- magnetic field /
- morphology /
- P3HT:PCBM /
- phase separation
-
图 3 磁场处理器件活性层的示意图
Figure 3. Schematic illustration of the magnetic field treated active layer
图 4 磁场作用下活性层的分子排列
Figure 4. Molecular arrangement of the active layer under the external magnetic field
图 5 不同磁场强度处理后电池器件的J-V曲线
Figure 5. J-V characteristics of the cells under different intensities of the magnetic field treatment
图 6 不同磁场强度处理后电池器件的IPCE曲线
Figure 6. IPCE characteristics of the cells under different intensities of the magnetic field treatment
图 7 不同磁场强度处理后活性层P3HT:PCBM的PL谱
Figure 7. PL spectra of the P3HT:PCBM active layers under different intensities of the magnetic field treatment
图 8 不同磁场强度处理后P3HT:PCBM活性层的AFM图像
Figure 8. AFM images of the P3HT:PCBM active layers under different intensities of the magnetic field treatment
表 1 不同磁场强度处理后P3HT:PCBM OSC的性能
Table 1. Performance of P3HT:PCBM OSC under different intensity of external magnetic field treatment
H/(MA/m) Jsc/(mA/cm2) Voc/(V) FF PCE/(%) Rs/(Ω·cm2) Rsh/(Ω·cm2) 0 7.414 0.555 0.512 2.107 18.56 197.60 0.2 7.646 0.558 0.504 2.154 16.20 223.12 0.4 8.063 0.552 0.527 2.344 14.04 260.04 0.9 8.332 0.565 0.543 2.562 13.28 279.56 1.5 7.734 0.556 0.524 2.253 15.64 248.96 
下载: 导出CSV
-
[1] GREEN M A, EMERY K, HISHIKAWA Y, et al.Solar cell efficiency tables (version 39)[J].Prog Photovolt Res Appl, 2012, 20(1):12-20. doi: 10.1002/pip.v20.1 [2] SHOCKLEY W, QUEISSER H J.Detailed balance limit of efficiency of p-n junction solar cells[J].J Appl Phys, 1961, 32(3):510-519. doi: 10.1063/1.1736034 [3] MEYER E L, VAN DYK E E.Characterization of degradation in thin-film photovoltaic module performance parameters[J].Renew Energy, 2003, 28(9):1455-1469. doi: 10.1016/S0960-1481(02)00062-9 [4] GREEN M A.Solar cells:operating principles, technology, and system applications[M].Englewood Cliffs, USA:Prentice-Hall Inc, 1982:355-357. [5] KIM J Y, NOH S, KWAK J, et al.Analysis of annealing process on P3HT:PCBM-based polymer solar cells using optical and impedance spectroscopy[J].J Nanosci Nanotechnol, 2013, 13(5):3360-3364. doi: 10.1166/jnn.2013.7262 [6] MVHLBACHER D, SCHARBER M, MORANA M, et al.High photovoltaic performance of a low-bandgap polymer[J].Adv Mater, 2006, 18(21):2884-2889. doi: 10.1002/(ISSN)1521-4095 [7] 於黄忠, 温源鑫.不同厚度的活性层及阴极的改变对聚合物太阳电池性能的影响[J].物理学报, 2011, 60(3):038401. http://d.old.wanfangdata.com.cn/Periodical/wlxb201103118YU H Z, WEN Y X.Influence of the thickness and cathode material on the performance of the polymer solar cell[J].Acta Physica Sinica, 2011, 60(3):038401. http://d.old.wanfangdata.com.cn/Periodical/wlxb201103118 [8] 杨少鹏, 李娜, 李光, 等.混合溶剂对P3HT:PCBM基太阳能电池的影响[J].物理学报, 2013, 62(1):014702. http://d.old.wanfangdata.com.cn/Periodical/wlxb201301034YANG S P, LI N, LI G, et al.Effect of mixed solvents on P3HT:PCBM based solar cell[J].Acta Physica Sinica, 2013, 62(1):014702. http://d.old.wanfangdata.com.cn/Periodical/wlxb201301034 [9] 龚秀, 蒋玉荣, 李萌, 等.柔性有机太阳能电池研究状况及发展趋势浅析[J].电子元件与材料, 2014, 33(10):1-6. http://d.old.wanfangdata.com.cn/Periodical/dzyjycl201410001GONG X, JIANG Y R, LI M, et al.A discussion on research status and development trend of flexible organic solar cell[J].Electronic Components and Materials, 2014, 33(10):1-6. http://d.old.wanfangdata.com.cn/Periodical/dzyjycl201410001 [10] LI M, MA H, LIU H, et al.Ferroelectric field effect of the bulk heterojunction in polymer solar cells[J].Appl Phys Lett, 2014, 104(25):253905. doi: 10.1063/1.4885216 [11] 吴清洋, 谢国华, 张振松, 等.基于连续性掺杂的高效全荧光白色有机电致发光器件的研究[J].物理学报, 2013, 62(19):197204. doi: 10.7498/aps.62.197204WU Q Y, XIE G H, ZHANG Z S, et al.Highly efficient all fluorescent white organic light-emitting devices made by sequential doping[J].Acta Physica Sinica, 2013, 62(19):197204. doi: 10.7498/aps.62.197204 [12] LI G, ZHU R, YANG Y.Polymer solar cells[J].Nat Photonics, 2012, 6(3):153-161. doi: 10.1038/nphoton.2012.11 [13] CAI W, GONG X, CAO Y.Polymer solar cells:recent development and possible routes for improvement in the performance[J].Sol Energy Mater Sol Cells, 2010, 94(2):114-127. doi: 10.1016/j.solmat.2009.10.005 [14] HE Z, ZHONG C, SU S, et al.Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure[J].Nat Photonics, 2012, 6(9):591-595. doi: 10.1038/nphoton.2012.190 [15] CANDELARIA S L, SHAO Y, ZHOU W, et al.Nanostructured carbon for energy storage and conversion[J].Nano Energy, 2012, 1(2):195-220. doi: 10.1016/j.nanoen.2011.11.006 [16] KIM H, NAM S, LEE H, et al.Influence of controlled acidity of hole-collecting buffer layers on the performance and lifetime of polymer:fullerene solar cells[J].J Phys Chem C, 2011, 115(27):13502-13510. doi: 10.1021/jp2028615 [17] GAO Y, YIP H L, CHEN K S, et al.Surface doping of conjugated polymers by graphene oxide and its application for organic electronic devices[J].Adv Mater, 2011, 23(16):1903-1908. doi: 10.1002/adma.v23.16 [18] 王鹏, 郭闰达, 陈宇, 等.梯度掺杂体异质结对有机太阳能电池光电转换效率的影响[J].物理学报, 2013, 62(8):088801. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QKC20132013050700040233WANG P, GUO R D, CHEN Y, et al.Influence of gradient doping on photoelectric conversion efficiency of organic photovoltaic devices[J].Acta Physica Sinica, 2013, 62(8):088801. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QKC20132013050700040233 [19] ZHOU Z L, ZHANG F J, XU X W, et al.Photovoltaic performance improvement of P3HT:PCBM polymer solar cells by annealing treatment[J].Acta Phys Chim Sin, 2011, 27(4):875-880. http://www.ingentaconnect.com/content/apcs/apcs/2011/00000027/00000004/art00019 [20] AN Q, ZHANG F, ZHANG J, et al.Enhanced performance of polymer solar cells through sensitization by a narrow band gap polymer[J].Sol Energy Mater Sol Cells, 2013, 118:30-35. doi: 10.1016/j.solmat.2013.07.050 [21] VAN DUIJNEN P T, DE GIER H D, BROER R, et al.The behaviour of charge distributions in dielectric media[J].Chem Phys Lett, 2014, 615:83-88. doi: 10.1016/j.cplett.2014.10.003 [22] DERBAL-HABAK H, BERGERET C, COUSSEAU J, et al.Improving the current density Jsc of organic solar cells P3HT:PCBM by structuring the photoactive layer with functionalized SWCNTs[J].Sol Energy Mater Sol Cells, 2011, 95(Suppl 1):S53-S56. http://www.sciencedirect.com/science/article/pii/S0927024810007415 [23] PADINGER F, RITTBERGER R S, SARICIFTCI N S.Effects of postproduction treatment on plastic solar cells[J].Adv Funct Mater, 2003, 13(1):85-88. doi: 10.1002/adfm.200390011/full [24] MA W, YANG C, GONG X, et al.Thermally stable, efficient polymer solar cells with nanoscale control of the interpenetrating network morphology[J].Adv Funct Mater, 2005, 15(10):1617-1622. doi: 10.1002/(ISSN)1616-3028 [25] 汪仲清.磁场对液态物质分子的作用机制[J].石油大学学报(自然科学版), 1998, 22(4):116-119. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800557014WANG Z Q.Mechanism of magnetic field on liquid molecular[J].Journal of China University of Petroleum (Edition of Natural Science), 1998, 22(4):116-119. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199800557014 -
下载:
点击查看大图
图(8) / 表(1)
计量
- 文章访问数: 6673
- HTML全文浏览量: 2504
- PDF下载量: 159
