| 光谱学与光谱分析 |
|
|
|
|
|
| Effect of Annealing Pressure on P3HT∶PCBM Nanoscale Morphology and Photovoltaic Properties |
| LI Chang1, XUE Wei1, ZHANG Ting1*, ZHAO Su-ling2 |
1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
2. Key Laboratory of Luminescence and Optical Information of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China |
|
|
|
|
Abstract The considerable performance enhancement of P3HT-based solar cell after thermal annealing can be attributed to the thermodynamically driven partial crystallization and phase segregation of each component. In the present work, thermal annealing was executed by delivering P3HT∶PCBM blend films onto the preheated susceptor in a PECVD chamber filled with high purity nitrogen gas. The pressure of inner chamber could be set steadily and precisely in the range of 1 to 1 850 mTorr at 150 ℃. It was found that the phase segregation scale of two components was tuned to a certain extent by varying the annealing pressure, whereas the polymer crystallinity was slightly affected. According to the pressure settings, polymer solar cells (PSCs) were fabricated in the following structure: ITO/PEDOT∶PSS/P3HT∶PCBM/Al. All of the device parameters exhibited the similar trend—an initial increase followed by a decrease, and reached a peak at 1 500 mTorr with successive increase in annealing setting pressure. PSC annealed under 1 500 mTorr shows overall high performances with the power conversion efficiency up to 3.56%. The UV-Vis absorption spectra of annealed blend films shows that the vibronic absorption peaks (shoulders) at 510, 550 and 600 nm became more pronounced under higher setting pressure, which is attributed to better crystalline P3HT with increased π—π stacking of polymer molecules. The AFM results further suggest that high annealing pressure (>1 000 mTorr) promoted the domain formations of P3HT or PCBM; moreover, a moderate phase segregation, as a result of an appropriate annealing pressure (1 500 mTorr), facilitates polymer crystallization which ensures the high charge (hole) mobility and consequently increased short-circuit current and fill factor.
|
|
Received: 2013-12-14
Accepted: 2014-03-25
|
|
|
|
Corresponding Authors:
ZHANG Ting
E-mail: zhangting@bit.edu.cn
|
|
[1] Brabec C J. Sol. Energy Mater. Sol. Cells, 2004, 83(2): 273.
[2] Li G, Zhu R, Yang Y, Nat. Photonics, 2012, 6(3): 153.
[3] Ma W, Yang C, Gong X, et al. Adv. Funct. Mater., 2005, 15(10): 1617.
[4] Campoy-Quiles M, Ferenczi T, Agostinelli T, et al. Nat. Mater., 2008, 7(2): 158.
[5] Verploegen E, Miller C E, Schmidt K, et al. Chem. Mater., 2012, 24(20): 3923.
[6] Bertho S, Janssen G, Cleij T J, et al. Sol. Energy Mater. Sol. Cells, 2008, 92(7): 753.
[7] van Bavel S, Veenstra S, Loos J. Macromol. Rapid Commun., 2010, 31(21): 1835.
[8] Ballantyne A M, Ferenczi T, Campoy-Quiles M, et al. Macromolecules, 2010, 43(3): 1169.
[9] Kim Y, Cook S, Tuladhar S M, et al. Nat. Mater., 2006, 5(3): 197.
[10] Jeong J W, Huh J W, Lee J I, et al. Curr. Appl. Phys., 2010, 10(3): S520.
[11] Zhokhavets U, Erb T, Gobsch G, et al. Chem. Phys. Lett., 2006, 418(4): 324.
[12] Huang Y C, Liao Y C, Li S S, et al. Sol. Energy Mater. Sol. Cells, 2009, 93(6): 888.
[13] Li G, Shrotriya V, Yao Y, et al. J. Mater. Chem., 2007, 17(30): 3126.
[14] Li G, Shrotriya V, Huang J S, et al. Nat. Mater., 2005, 4(11): 864.
[15] Mihailetchi V D, Xie H X, de Boer B, et al. Adv. Funct. Mater., 2006, 16(5): 699.
[16] Yang F, Shtein M, Forrest S R. Nat. Mater., 2005, 4(1): 37.
[17] Maurano A, Hamilton R, Shuttle C G, et al. Adv. Mater., 2010, 22(44): 4987.
[18] Li G, Shrotriya V, Yao Y, et al. J. Appl. Phys., 2005, 98(4): 043704. |
| [1] |
ZHOU Jian-ping1*, LI Xin-yu1, ZHU Feng2, CHEN Xiao-hong2*, XU Zheng3 . Efficient Polymer Solar Cells Using ZnO Electron Transporting Layer with Layered Magentron Sputtered ZnO Film and/or Modified with Functionalized Carbon Nanopartilces[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(02): 517-521. |
| [2] |
YANG Bing-yang1,2, HE Da-wei1,2*, ZHUO Zu-liang1,2, WANG Yong-sheng1,2 . Influence of Dimethyl Sulfoxide as Processing Additive for Improving Efficiency of Polymer Solar Cells[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(01): 287-292. |
| [3] |
HUANG Di, XU Zheng*, ZHAO Su-ling, ZHAO Jiao, LI Yang, ZHAO Ling . Understanding the Effected Efficiencies of Polymer Solar Cells Employing Different Fullerene Multiadducts as Acceptors [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(08): 2363-2367. |
| [4] |
YIN Ming, ZHANG Xin-ping*, LIU Hong-mei. Effect of Annealing Temperature on the Crystallization and Spectroscopic Response of a Small-Molecule Semiconductor Doped in Polymer Film [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(11): 3078-3082. |
| [5] |
CHEN Zheng1, DENG Zhen-bo1*, ZHOU Mao-yang1, Lü Zhao-yue2, YIN Yue-hong1, ZOU Ye1, DU Hai-liang1, LUN Jian-chao1. Research on Spectral Response of CdSe Quantum Dots Dopted Polymer Solar Cell[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(08): 2214-2217. |
| [6] |
ZHOU Jian-ping1, CHEN Xiao-hong2*, XU Zheng3 . Influence of Composite Cathode of Ag/LiF/Al on the Performance of P3HT∶PCBM Solar Cells[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(07): 1865-1868. |
| [7] |
ZHOU Jian-ping1，CHEN Xiao-hong2*, XU Zheng3 . Influence of P3HT∶PCBM Film Formation Process on the Performance of Polymer Solar Cells [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(10): 2684-2687. |
| [8] |
LIU Jing-ru，CHAO Ling-ling，YU Qiang，ZHU Meng-bing，GU Chun-miao . Study on Effect of Hyperbranched Polyester on the Mechanical Properties and Morphology of PEG Polyurethane Elastomer by ATR-FTIR [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(04): 983-987. |
| [9] |
LENG Xiao-jing1, CHAI Zhi1, REN Fa-zheng1, ZHANG Lu-da2, Turgeon S L3 . Study of Microstructure of Pectin and Whey Protein Isolate Mixtures under Incompatible Conditions Using Dynamic Light Scattering and Transmission Electron Microscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(08): 2196-2200. |
| [10] |
LIU Xiao-dong, ZHANG Fu-jun*, XU Zheng, ZHAO Su-ling, SONG Jing-lu, LI Jun-ming, SONG Dan-dan, WANG Yong-sheng. Influence of the Active Layer Thickness on the Performance of Bulk Heterojunction Solar Cell [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(07): 1752-1755. |
| [11] |
ZHAO Pei-zhong1,WEN Qing-zhen1,WANG Yuan-sheng2,ZHU Jin-hua1,HUA Xing-yan1. Analysis of Hydrogen Bondings in Polyurethane Urea Cured in Graded Temperature Field by FTIR[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(03): 551-554. |
| [12] |
ZHANG Ting1, XU Zheng1, 2, TENG Feng1, QIAN Lei1, WANG Yong-sheng1, XU Xu-rong1* . Optical and Morphological Investigation on the Interaction of Dual Dopants in Poly(N-Vinylcarzole)[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(05): 790-793. |
| [13] |
CAI Zhi-rang1，TONG Wei2，ZHANG Meng2，ZHANG Bei2，LIU Ning1，2，ZHANG Yu-heng2 . Magnetic Properties and Transport Behaviors in Double Doped La0.67+1.33xSr0.33-1.33xMn1-xMgxO3 System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(04): 481-486. |
| [14] |
CAI Zhi-rang1，LIU Ning1, 2, TONG Wei2，XU Su-jun2，ZHANG Yu-heng2 . Phase Separation and Transport Behaviors in La0.7-x DyxSr0.3MnO3 System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(10): 1188-1192. |
|
|
|
|
