Methyl Thioether Functionalization of a Polymeric Donor for Efficient Solar Cells Processed from Non-Halogenated Solvents

Zhang, Chun-Hui1; Wang, Wei1; Huang, Wei1; Wang, Jiang1,3; Hu, Zhubin4; Lin, Zhichao1; Yang, Tingbin1,2; Lin, Fengyuan1; Xing, Yun1; Bai, Junxian1; Sun, Haitao4,5; Liang, Yongye1

2019-04-23

10.1021/acs.chemmater.9b00926

CHEMISTRY OF MATERIALS   Impact Factor & Quartile

0897-4756

1520-5002

Polymer solar cells (PSCs) processed from non-halogenated solvents are favorable for large scale production. However, the photovoltaic performance of devices from non-halogenated solvents is generally inferior to that of the counterparts from halogenated solvents. Herein, we report the utilization of 5-alkyl-4-(methylthio)thiophene (MTT) as a conjugated side chain of the polymeric donor to achieve efficient PSCs processed from toluene. The derived polymer PMTT56 exhibits lower energy levels than the 5-alkyl-4-methoxythiophene (MOT) counterpart (PMOT39) and 5-(alkylthio)thiophene counterpart (PEHTT). PMTT56 is superior to PMOT39 with an enhanced interchain interaction and hole mobility, and also shows better solubility than PEHTT in toluene. In toluene-processed PSCs, the PMTT56 devices deliver a power conversion efficiency (PCE) of up to 12.6% with IT-2F as the acceptor. By introducing [6,61-phenyl C-71-butyric acid methyl ester (PC71BM) as the second acceptor, a remarkable PCE of 13.2% is further achieved in the ternary devices, which is among the best for PSCs processed from toluene. Our study presents a fine-tuning approach to develop efficient organic photovoltaic materials processed from non-halogenated solvents.

SCI ; EI

English

First ; Corresponding

Shenzhen Key Lab funding[ZDSYS201505291525382]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000466053300038

AMER CHEMICAL SOC

20191806853139

Butyric acid ; Hole mobility ; Polymer solar cells ; Polymers ; Solar cells ; Solvents ; Thiophene ; Toluene

Semiconducting Materials:712.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Polymeric Materials:815.1

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Key Lab Printed Elect, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Mat Characterizat & Preparat Ctr, Shenzhen 518055, Peoples R China
3.Sichuan Univ Sci & Engn, Analyt & Testing Ctr, Zigong 643000, Sichuan, Peoples R China
4.East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
5.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

Zhang, Chun-Hui,Wang, Wei,Huang, Wei,et al. Methyl Thioether Functionalization of a Polymeric Donor for Efficient Solar Cells Processed from Non-Halogenated Solvents[J]. CHEMISTRY OF MATERIALS,2019,31(8):3025-3033.

Zhang, Chun-Hui.,Wang, Wei.,Huang, Wei.,Wang, Jiang.,Hu, Zhubin.,...&Liang, Yongye.(2019).Methyl Thioether Functionalization of a Polymeric Donor for Efficient Solar Cells Processed from Non-Halogenated Solvents.CHEMISTRY OF MATERIALS,31(8),3025-3033.

Zhang, Chun-Hui,et al."Methyl Thioether Functionalization of a Polymeric Donor for Efficient Solar Cells Processed from Non-Halogenated Solvents".CHEMISTRY OF MATERIALS 31.8(2019):3025-3033.