Thieno[3,4-c]pyrrole-4,6(5H)-dione Polymers with Optimized Energy Level Alignments for Fused-Ring Electron Acceptor Based Polymer Solar Cells

Lin, Fengyuan1,2; Huang, Wei1; Sun, Haitao3; Xin, Jingming4; Zeng, Hao1; Yang, Tingbin1; Li, Meilin1; Zhang, Xing1; Ma, Wei4; Liang, Yongye1

2017-07-11

10.1021/acs.chemmater.7b01335

CHEMISTRY OF MATERIALS   影响因子和分区

0897-4756

1520-5002

Rapid advances have been recently demonstrated in polymer solar cells (PSCs) with fused-ring electron acceptors (FREAs), which have low bandgap and high electron mobility. Semiconducting polymer donors with medium bandgap to complement the absorption and proper energy level alignments to minimize energy loss are preferred in this system, but there are few studies on them. Here, we explore thieno [3,4-dpyrrole-4,6(5H)-dione (TPD) based polymers for high performance PSCs with FREAs. A new TPD polymer, PMOT16, is developed with 4-methoxyl thiophene as conjugated side chains on the benzo[1,2-b:4,5-b']dithiophene unit. PMOT16 exhibits lower energy levels and enhanced interactions compared to the thiophene counterpart, PBDTT-6ttTPD. However, in PSCs with ITIC as the acceptor, PMOT16 shows inferior performance to PBDTT-6ttTPD on short circuit current (J(SC)) and fill factor. When IDIC with lower energy levels is employed as acceptor, PMOT16 PSCs show decent power conversion efficiencies (PCEs) of around 10% with low energy loss, which surpasses that of PBDTT-6ttTPD due to increase of open circuit voltage. It is found that the lower J(SC) and inferior PCE in PMOT16:ITIC are ascribed to the approaching of energy levels between PMOT16 and ITIC. Our studies highlight the potential of TPD based polymers for high performance FREA-PSCs and the necessity for tuning energy level alignments.

SCI ; EI

英语

第一 ; 通讯

Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy[DE-AC02-05CH11231]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000405535700024

AMER CHEMICAL SOC

20172803941982

Conjugated polymers ; Energy dissipation ; Energy gap ; Low power electronics ; Open circuit voltage ; Solar cells ; Thiophene

Energy Losses (industrial and residential):525.4 ; Solar Cells:702.3 ; Organic Compounds:804.1 ; Organic Polymers:815.1.1

MATERIALS SCIENCE

Web of Science

1.South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Nankai Univ, Coll Chem, Tianjin 300071, Peoples R China
3.East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

Lin, Fengyuan,Huang, Wei,Sun, Haitao,et al. Thieno[3,4-c]pyrrole-4,6(5H)-dione Polymers with Optimized Energy Level Alignments for Fused-Ring Electron Acceptor Based Polymer Solar Cells[J]. CHEMISTRY OF MATERIALS,2017,29(13):5636-5645.

Lin, Fengyuan.,Huang, Wei.,Sun, Haitao.,Xin, Jingming.,Zeng, Hao.,...&Liang, Yongye.(2017).Thieno[3,4-c]pyrrole-4,6(5H)-dione Polymers with Optimized Energy Level Alignments for Fused-Ring Electron Acceptor Based Polymer Solar Cells.CHEMISTRY OF MATERIALS,29(13),5636-5645.

Lin, Fengyuan,et al."Thieno[3,4-c]pyrrole-4,6(5H)-dione Polymers with Optimized Energy Level Alignments for Fused-Ring Electron Acceptor Based Polymer Solar Cells".CHEMISTRY OF MATERIALS 29.13(2017):5636-5645.