13.34 % Efficiency Non-fullerene All-Small-Molecule Organic Solar Cells Enabled by Modulating the Crystallinity of Donors via a Fluorination Strategy

被引：130

作者：

Ge, Jinfeng ^{[1
]}

Xie, Lingchao ^{[1
]}

Peng, Ruixiang ^{[1
,2
]}

Fanady, Billy ^{[1
]}

Huang, Jiaming ^{[1
]}

Song, Wei ^{[1
]}

Yan, Tingting ^{[1
,2
]}

Zhang, Wenxia ^{[1
,2
]}

Ge, Ziyi ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 07期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

all-small-molecule organic solar cells; crystallinity; fluorination; non-fullerene; solar cells; ELECTRON-ACCEPTOR; POLYMER; PERFORMANCE; MORPHOLOGY;

D O I：

10.1002/anie.201910297

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Non-fullerene all-small-molecule organic solar cells (NFSM-OSCs) have shown potential as OSCs, owing to their high purity, easy synthesis and good reproducibility. However, challenges in the modulation of phase separation morphology have limited their development. Herein, two novel small molecular donors, BTEC-1F and BTEC-2F, derived from the small molecule DCAO3TBDTT, are synthesized. Using Y6 as the acceptor, devices based on non-fluorinated DCAO3TBDTT showed an open circuit voltage (V-oc) of 0.804 V and a power conversion efficiency (PCE) of 10.64 %. Mono-fluorinated BTEC-1F showed an increased V-oc of 0.870 V and a PCE of 11.33 %. The fill factor (FF) of di-fluorinated BTEC-2F-based NFSM-OSC was improved to 72.35 % resulting in a PCE of 13.34 %, which is higher than that of BTEC-1F (61.35 %) and DCAO3TBDTT (60.95 %). To our knowledge, this is the highest PCE for NFSM-OSCs. BTEC-2F had a more compact molecular stacking and a lower crystallinity which enhanced phase separation and carrier transport.

引用

页码：2808 / 2815

页数：8

共 42 条

[1] Robust nonfullerene solar cells approaching unity external quantum efficiency enabled by suppression of geminate recombination [J].

Baran, Derya ;

Gasparini, Nicola ;

Wadsworth, Andrew ;

Tan, Ching Hong ;

Wehbe, Nimer ;

Song, Xin ;

Hamid, Zeinab ;

Zhang, Weimin ;

Neophytou, Marios ;

Kirchartz, Thomas ;

Brabec, Christoph J. ;

Durrant, James R. ;

McCulloch, Iain .

NATURE COMMUNICATIONS, 2018, 9

[2] 9.73% Efficiency Nonfullerene All Organic Small Molecule Solar Cells with Absorption-Complementary Donor and Acceptor [J].

Bin, Haijun ;

Yang, Yankang ;

Zhang, Zhi-Guo ;

Ye, Long ;

Ghasem, Masoud ;

Chen, Shanshan ;

Zhang, Yindong ;

Zhang, Chunfeng ;

Sun, Chenkai ;

Xue, Lingwei ;

Yang, Changduk ;

Ade, Harald ;

Li, Yongfang .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 139 (14) :5085-5094

[3] Constructing High-Performance All-Small-Molecule Ternary Solar Cells with the Same Third Component but Different Mechanisms for Fullerene and Non-fullerene Systems [J].

Chang, Yanhong ;

Chang, Yilin ;

Zhu, Xiangwei ;

Zhou, Xuehua ;

Yang, Chen ;

Zhang, Jianqi ;

Lu, Kun ;

Sun, Xiangnan ;

Wei, Zhixiang .

ADVANCED ENERGY MATERIALS, 2019, 9 (16)

[4] Small is Powerful: Recent Progress in Solution-Processed Small Molecule Solar Cells [J].

Collins, Samuel D. ;

Ran, Niva A. ;

Heiber, Michael C. ;

Thuc-Quyen Nguyen .

ADVANCED ENERGY MATERIALS, 2017, 7 (10)

[5] Recombination in polymer-fullerene bulk heterojunction solar cells [J].

Cowan, Sarah R. ;

Roy, Anshuman ;

Heeger, Alan J. .

PHYSICAL REVIEW B, 2010, 82 (24)

[6] Fused Nonacyclic Electron Acceptors for Efficient Polymer Solar Cells [J].

Dai, Shuixing ;

Zhao, Fuwen ;

Zhang, Qianqian ;

Lau, Tsz-Ki ;

Li, Tengfei ;

Liu, Kuan ;

Ling, Qidan ;

Wang, Chunru ;

Lu, Xinhui ;

You, Wei ;

Zhan, Xiaowei .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 139 (03) :1336-1343

[7] Aromatic end-capped acceptor effects on molecular stacking and the photovoltaic performance of solution-processable small molecules [J].

Deng, Dan ;

Yang, Yang ;

Zou, Wenjun ;

Zhang, Yajie ;

Wang, Zhen ;

Wang, Zaiyu ;

Zhang, Jianqi ;

Lu, Kun ;

Ma, Wei ;

Wei, Zhixiang .

JOURNAL OF MATERIALS CHEMISTRY A, 2018, 6 (44) :22077-22085

[8] New Anthracene-Fused Nonfullerene Acceptors for High-Efficiency Organic Solar Cells: Energy Level Modulations Enabling Match of Donor and Acceptor [J].

Feng, Huanran ;

Yi, Yuan-Qiu-Qiang ;

Ke, Xin ;

Yan, Jing ;

Zhang, Yamin ;

Wan, Xiangjian ;

Li, Chenxi ;

Zheng, Nan ;

Xie, Zengqi ;

Chen, Yongsheng .

ADVANCED ENERGY MATERIALS, 2019, 9 (12)

[9] Thieno[3,2-b]pyrrolo-Fused Pentacyclic Benzotriazole-Based Acceptor for Efficient Organic Photovoltaics [J].

Feng, Liuliu ;

Yuan, Jun ;

Zhang, Zhenzhen ;

Peng, Hongjian ;

Zhang, Zhi-Guo ;

Xu, Shutao ;

Liu, Ye ;

Li, Yongfang ;

Zou, Yingping .

ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (37) :31985-31992

[10] Over 12% Efficiency Nonfullerene All-Small-Molecule Organic Solar Cells with Sequentially Evolved Multilength Scale Morphologies [J].

Gao, Ke ;

Jo, Sae Byeok ;

Shi, Xueliang ;

Nian, Li ;

Zhang, Ming ;

Kan, Yuanyuan ;

Lin, Francis ;

Kan, Bin ;

Xu, Bo ;

Rong, Qikun ;

Shui, Lingling ;

Liu, Feng ;

Peng, Xiaobin ;

Zhou, Guofu ;

Cao, Yong ;

Jen, Alex K. -Y. .

ADVANCED MATERIALS, 2019, 31 (12)

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