Small Molecules with Asymmetric 4-Alkyl-8-alkoxybenzo[1,2-b:4,5-b′]dithiophene as the Central Unit for High-Performance Solar Cells with High Fill Factors

被引：26

作者：

Guo, Yuan-Qiang ^{[1
,2
]}

Wang, Yunchuang ^{[1
,2
]}

Song, Li-Cheng ^{[1
,2
]}

Liu, Feng

Wan, Xiangjian ^{[1
,2
]}

Zhang, Hongtao ^{[1
,2
]}

Chen, Yongsheng ^{[1
,2
,3
]}

机构：

[1] Nankai Univ, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China

[2] Nankai Univ, Key Lab Funct Polymer Mat,Coll Chem, State Key Lab Elementoorgan Chem, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China

[3] Nankai Univ, Natl Inst Adv Mat, Sch Mat Sci & Engn, Tianjin 300071, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 08期

基金：

美国国家科学基金会;

关键词：

POWER CONVERSION EFFICIENCY; PROCESSED SMALL-MOLECULE; OPEN-CIRCUIT VOLTAGE; ORGANIC PHOTOVOLTAICS; BENZODITHIOPHENE UNIT; CATHODE INTERLAYER; POLYMER; MORPHOLOGY; 10-PERCENT; BREAKING;

D O I：

10.1021/acs.chemmater.7b00642

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A small molecule named DRBDTCO based on benzo[1,2-b:4,5-b']dithiophene (BDT) with an asymmetric side chain and its dimer, dDRBDTCO, with the octamethylene connector were designed and synthesized as donor materials for solution-processed bulk heterojunction solar cells. The optimized power conversion efficiency of a DRBDTCO-based device was 8.18% under AM 1.5 G irradiation (100 mW cm(-2)), which is higher than that of its dDRBDTCO-based device. Both molecule based devices exhibited high fill factors of >73%, which are attributed to their optimized morphologies with a feature size of 15-20 nm, highly efficient charge collection, less bimolecular recombination, and well-balanced charge transport properties. The results demonstrate that the asymmetric BDT unit could be a promising building block for donor materials with high efficiencies and high fill factors.

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页码：3694 / 3703

页数：10

相关论文

共 61 条

[1] Device physics of polymer:fullerene bulk heterojunction solar cells [J].

Blom, Paul W. M. ;

Mihailetchi, Valentin D. ;

Koster, L. Jan Anton ;

Markov, Denis E. .

ADVANCED MATERIALS, 2007, 19 (12) :1551-1566

[2] Polymer-Fullerene Bulk-Heterojunction Solar Cells [J].

Brabec, Christoph J. ;

Gowrisanker, Srinivas ;

Halls, Jonathan J. M. ;

Laird, Darin ;

Jia, Shijun ;

Williams, Shawn P. .

ADVANCED MATERIALS, 2010, 22 (34) :3839-3856

[3] Polymer solar cells with enhanced open-circuit voltage and efficiency [J].

Chen, Hsiang-Yu ;

Hou, Jianhui ;

Zhang, Shaoqing ;

Liang, Yongye ;

Yang, Guanwen ;

Yang, Yang ;

Yu, Luping ;

Wu, Yue ;

Li, Gang .

NATURE PHOTONICS, 2009, 3 (11) :649-653

[4] Single-Junction Polymer Solar Cells Exceeding 10% Power Conversion Efficiency [J].

Chen, Jing-De ;

Cui, Chaohua ;

Li, Yan-Qing ;

Zhou, Lei ;

Ou, Qing-Dong ;

Li, Chi ;

Li, Yongfang ;

Tang, Jian-Xin .

ADVANCED MATERIALS, 2015, 27 (06) :1035-1041

[5] High-Performance Organic Solar Cells Based on a Small Molecule with Alkylthio-Thienyl-Conjugated Side Chains without Extra Treatments [J].

Cui, Chaohua ;

Guo, Xia ;

Min, Jie ;

Guo, Bing ;

Cheng, Xiao ;

Zhang, Maojie ;

Brabec, Christoph J. ;

Li, Yongfang .

ADVANCED MATERIALS, 2015, 27 (45) :7469-+

[6] Deep Absorbing Porphyrin Small Molecule for High-Performance Organic Solar Cells with Very Low Energy Losses [J].

Gao, Ke ;

Li, Lisheng ;

Lai, Tianqi ;

Xiao, Liangang ;

Huang, Yuan ;

Huang, Fei ;

Peng, Junbiao ;

Cao, Yong ;

Liu, Feng ;

Russell, Thomas P. ;

Janssen, Rene A. J. ;

Peng, Xiaobin .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (23) :7282-7285

[7] Development of a High-Performance Donor Acceptor Conjugated Polymer: Synergy in Materials and Device Optimization [J].

Gao, Mei ;

Subbiah, Jegadesan ;

Geraghty, Paul B. ;

Chen, Ming ;

Purushothaman, Balaji ;

Chen, Xiwen ;

Qin, Tianshi ;

Vak, Doojin ;

Scholes, Fiona H. ;

Watkins, Scott E. ;

Skidmore, Melissa ;

Wilson, Gerard J. ;

Holmes, Andrew B. ;

Jones, David J. ;

Wong, Wallace W. H. .

CHEMISTRY OF MATERIALS, 2016, 28 (10) :3481-3487

[8] Simultaneous Enhancement of Open-Circuit Voltage, Short-Circuit Current Density, and Fill Factor in Polymer Solar Cells [J].

He, Zhicai ;

Zhong, Chengmei ;

Huang, Xun ;

Wong, Wai-Yeung ;

Wu, Hongbin ;

Chen, Liwei ;

Su, Shijian ;

Cao, Yong .

ADVANCED MATERIALS, 2011, 23 (40) :4636-+

[9] 10.4% Power Conversion Efficiency of ITO-Free Organic Photovoltaics Through Enhanced Light Trapping Configuration [J].

Huang, Jiang ;

Li, Chang-Zhi ;

Chueh, Chu-Chen ;

Liu, Sheng-Qiang ;

Yu, Jun-Sheng ;

Jen, Alex K. -Y. .

ADVANCED ENERGY MATERIALS, 2015, 5 (15)

[10] Polymer Solar Cells with Efficiency >10% Enabled via a Facile Solution-Processed Al-Doped ZnO Electron Transporting Layer [J].

Jagadamma, Lethy Krishnan ;

Al-Senani, Mohammed ;

El-Labban, Abdulrahman ;

Gereige, Issam ;

Ndjawa, Guy O. Ngongang ;

Faria, Jorge C. D. ;

Kim, Taesoo ;

Zhao, Kui ;

Cruciani, Federico ;

Anjum, Dalaver H. ;

McLachlan, Martyn A. ;

Beaujuge, Pierre M. ;

Amassian, Aram .

ADVANCED ENERGY MATERIALS, 2015, 5 (12)

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