基于P3HT给体的单/双受体平面异质结电池性能及其介电特性

为了研究分析界面电荷等特性对器件的影响，制备了基于P3HT给体的单/双受体平面异质结(PHJ)有机太阳能电池(OPV)。首先研究了P3HT膜厚、P3HT溶剂和P3HT膜层的干燥时间对器件性能的影响。为了提高P3HT/SubPc PHJ电池的性能，采用双受体的三元器件结构(P3HT/SubNc/SubPc)，制备了结构为ITO/PEDOT∶PSS/P3HT/SubNc/SubPc/BCP/Al的三元瀑布型OPV器件并研究了SubNc层厚度对其性能的影响。结果表明，在二元器件(P3HT/SubPc)体系中，P3HT溶于氯仿和1,2-二氯苯混合溶剂，成膜后干燥10 min退火获得的器件性能最佳。在三元器件中，随着SubNc厚度的增大，器件光电转换效率(PCE)先增大后减小。当SubNc厚度为5 nm时，器件PCE达到最大。相比于二元器件，三元器件的各项性能得到明显提升。最后，比较研究了不同厚度SubNc薄膜对器件介电特性的影响。

Abstract

To investigate the influence of interface charge on the performance of organic photovoltaic cells (OPVs), the single/double acceptor based planar heterojunction (PHJ) OPV based on P3HT donor were fabricated. Firstly, the effect of poly (3-hexylthiophene) (P3HT) film thickness, P3HT solvent, and the drying time of P3HT film on device performance was studied. To further improve the P3HT/SubPc PHJ performance, the cascade structure of ITO/PEDOT∶PSS/P3HT/chloroboron (Ⅲ) subnaphthalocyanine (SubNc)/boron subphthalocyanine chloride (SubPc)/BCP/Al including double acceptors was fabricated, and the influence of SubNc thickness was also investigated. In the single acceptor system, by using the mixed solvent (V(chloroform)∶V(ODCB)=1∶1) and drying in air for 10 min, the obtained P3HT film achieves the highest performance. While in the cascade structure, the power conversion efficiency (PCE) firstly rises then declines with the increase of SubNc thickness. When the SubNc thickness is 5 nm, the PCE is the highest. The photovoltaic parameters of cascade cell are all improved compared with the single acceptor based cells. Finally, to get insight into the physical mechanism between the interface charge and device performance, the effect of SubNc thickness on the dielectric characteristic of cascade cells was studied.

参考文献

[1] SEBASTIEN L, STEVEN V P, ELLEN D S, et al.. The future of organic photovoltaic solar cells as a direct power source for consumer electronics ［J］. Solar Energy Mater. Solar Cells, 2012, 103(1):1-10.

[2] WANG Y M, WEI W, LIU X, et al.. Research progress on polymer heterojunction solar cells ［J］. Solar Energy Mater. Solar Cells, 2012, 98(1):129-145.

[3] LIANG Y Y, XU Z, XIA J B, et al.. For the bright future-bulk heterojunction polymer solar cells with power conversion efficiency of 7.4% ［J］. Adv. Energy Mater., 2010, 22(20):E135-E138.

[4] MARTIN A G, KEITH E, YONSHIHIRO H, et al.. Solar cell efficiency tables \[J\]. Prog. Photovolt. Res. Appl., 2012, 20(1):12-20.

[5] 王丽娟, 张伟, 秦海涛, 等. 溶液加工条件对聚合物体相异质结太阳能电池性能的影响［J］. 液晶与显示, 2013, 28(4):521-526.

WANG L J, ZHANG W, QIN H T, et al.. Influence of solution-processed conditions on polymer bulk heterojunction solar cell performance ［J］. Chin. J. Liq. Cryst. Disp., 2013, 28(4):521-526. (in Chinese)

[6] 李卫民, 郭金川, 周彬. 溶剂挥发时间对体异质结有机太阳能电池复合特性的影响［J］. 发光学报, 2015, 36(4):437-442.

LI W M, GUO J C, ZHOU B. Solvent evaporation time dependent recombination properties in bulk heterojunction organic solar cells ［J］. Chin. J. Lumin., 2015, 36(4):437-442. (in Chinese)

[7] HUANG P H, WANG Y H, KE J C, et al.. Investigation of various active layers for their performance on organic solar cells ［J］. Materials, 2016, 9(8):667.

[8] 尹丽琴，彭俊彪. 聚合物P3HT在不同退火温度下的空穴传输特性［J］. 物理学报, 2009, 58(5):3456-3460.

YIN L Q, PENG J B. Hole transport in polymer P3HT with different annealing temperatures ［J］. Acta Phys. Sinica, 2009, 58(5):3456-3460. (in Chinese)

[9] HU Z Y, ZHANG J J, ZHU Y J. High-performance and air-processed polymer solar cells by room-temperature dryinof the active layer ［J］. Appl. Phys. Lett., 2013, 102(4):043307.

[10] ZHENG Y F, GUAN Z Q, YU J S, et al.. Effect of in situ annealing on the performance of spray coated polymer solar cells ［J］. Solar Energy Mater. Solar Cells, 2013, 111:200-205.

[11] 刘冠辰, 谢小银. 氯苯和邻二氯苯及其混合物作为溶剂对P3HT/PCBM异质结活性层光电转换效率的影响［J］. 科学技术与工程, 2016, 16(1):13-16.

LIU G C, XIE X Y. Solvent effects of chlorobenzene, ortho-dichlorobenzene and their mixture to performance of P3HT/PCBM-based bulk-heterojunction solar cells ［J］. Sci. Technol. Eng., 2016, 16(1):13-16. (in Chinese)

[12] SHAHEEN S E, GINLEY D S, JABBOUR G E. Organic-based photovoltaics: toward low-cost power generation ［J］. MRS Bulletin, 2005, 30(1):10-15.

[13] PEUMANS P, YAKIMOV A, FORREST S R. Small molecular weight organic thin-film photodetectors and solar cells ［J］. J. Appl. Phys., 2003, 93(7):3693-3723.

[14] BRABEC C J, CRAVINO A, MEISSNER D, et al.. Origin of the open circuit voltage of plastic solar cells ［J］. Adv. Funct. Mater., 2001, 11:34.

[15] BRABEC C J, CRAVINO A, MEISSNER D, et al.. The influence of materials work function on the open circuit voltage of plastic solar cells ［J］. Thin Solid Films, 2002, 403(2):368-372.

[16] SCHARBER M, MHLBACHER D, KOPPE M, et al.. Design rules for donors in bulk-heterojunction solar cells—towards 10% energy-conversion efficiency ［J］. Adv. Mater., 2006, 18(3):579-583.

[17] CHEN B, QIAO X, LIU C M, et al.. Effects of bulk and interfacial charge accumulation on fill factor in organic solar cells ［J］. Appl. Phys. Lett., 2013, 102(19):193302.

[18] ZHAO C, QIAO X, CHEN B, et al.. Thermal annealing effect on internal electrical polarization in organic solar cells ［J］. Org. Electron., 2013, 14(9):2192-2197.

[19] PICKETT A, MOHAPATRA A, LAUDARI A, et al.. Hybrid ZnO-organic semiconductor interfaces in photodetectors: a comparison of two near-infrared donor-acceptor copolymers ［J］. Org. Electron., 2017, 45:115-123.

王超, 余俊乐, 杨芳, 魏斌, 郑燕琼. 基于P3HT给体的单/双受体平面异质结电池性能及其介电特性[J]. 发光学报, 2018, 39(3): 329. WANG Chao, YU Jun-le, YANG Fang, WEI Bin, ZHENG Yan-qiong. Performance and Dielectric Property of Single/Double Acceptor Based Planar Heterojuntion Organic Photovoltaic Cells with P3HT Donor[J]. Chinese Journal of Luminescence, 2018, 39(3): 329.

基于P3HT给体的单/双受体平面异质结电池性能及其介电特性

关于本站 Cookie 的使用提示

全站搜索

基于P3HT给体的单/双受体平面异质结电池性能及其介电特性

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索