Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Acceptors with Fine-Tuned Optoelectronic Properties: Toward Efficient Additive-Free Nonfullerene Organic Solar Cells

Wang, Yang1,2,3,4; Liu, Bin1,2,5; Koh, Chang Woo6; Zhou, Xin1,2; Sun, Huiliang1,2; Yu, Jianwei1,2; Yang, Kun1,2; Wang, Hang1,2; Liao, Qiaogan1,2; Woo, Han Young6; Guo, Xugang1,2

2019-06

10.1002/aenm.201803976

Advanced Energy Materials   影响因子和分区

1614-6832

1614-6840

A series of polycyclic aromatic hydrocarbons (PAHs) with extended pi-conjugated cores (from naphthalene, anthracene, pyrene, to perylene) are incorporated into nonfullerene acceptors for the first time. Four different fused-ring electron acceptors (FREAs), i.e., DTN-IC-2Ph, DTA-IC-3Ph, DTP-IC-4Ph, and DTPy-IC-5Ph, are prepared via simple and facile synthetic procedures, yielding a remarkable platform to study the structure-property relationship for nonfullerene solar cells. With the PAH core being extended systematically, the gradually redshifted absorption with enhanced molar extinction coefficient (epsilon) is realized, the energy level of the highest occupied molecular orbital is up-shifted, and the electron mobility is greatly enhanced. Meanwhile, the solubility decreases and the molecular packing becomes strengthened. As a result, with an optimized combination of these characteristics, DTP-IC-4Ph attains good solubility, high molar extinction coefficient, complementary absorption, suitable morphology, well-matched energy levels, as well as efficient charge dissociation and transport in blend film. Consequently, the DTP-IC-4Ph-based solar cells with a donor polymer, poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b ']dithiophene))-alt-(5,5-(1 ',3 '-di-2-thienyl-5 ',7 '-bis(2-ethylhexyl)benzo[1 ',2 '-c:4 ',5 '-c ']dithiophene-4,8-dione))] (PBDB-T) exhibit a promising power conversion efficiency of 10.37% without any additives, which is close to the best performance achieved in additive-free nonfullerene solar cells (NFSCs). The results demonstrate that the PAH building blocks have great potential for the construction of novel FREAs for efficient additive-free NFSCs.

additive-free low-cost nonfullerene organic solar cells polycyclic aromatic hydrocarbon structure-property relationship

SCI ; EI

英语

第一 ; 通讯

NRF of Korea[2016M1A2A2940911] ; NRF of Korea[2015M1A2A2057506]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000477778000018

WILEY-V C H VERLAG GMBH

20191906908191

Additives ; Aromatization ; Electron energy levels ; Integrated circuits ; Mineral oils ; Molecular orbitals ; Naphthalene ; Organic solar cells ; Polycyclic aromatic hydrocarbons ; Pyrene ; Solubility

Petroleum Products:513.3 ; Solar Cells:702.3 ; Semiconductor Devices and Integrated Circuits:714.2 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Shenzhen Key Lab Printed Organ Elect, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
3.Nankai Univ, Coll Chem, Coinnovat Ctr Chem & Chem Engn Tianjin, Inst Polymer Chem,Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China
4.Nankai Univ, Coll Chem, Coinnovat Ctr Chem & Chem Engn Tianjin, Inst Polymer Chem,State Key Lab Med Chem Biol, Tianjin 300071, Peoples R China
5.Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China
6.Korea Univ, Dept Chem, Seoul 02841, South Korea

Wang, Yang,Liu, Bin,Koh, Chang Woo,et al. Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Acceptors with Fine-Tuned Optoelectronic Properties: Toward Efficient Additive-Free Nonfullerene Organic Solar Cells[J]. Advanced Energy Materials,2019,9(24).

Wang, Yang.,Liu, Bin.,Koh, Chang Woo.,Zhou, Xin.,Sun, Huiliang.,...&Guo, Xugang.(2019).Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Acceptors with Fine-Tuned Optoelectronic Properties: Toward Efficient Additive-Free Nonfullerene Organic Solar Cells.Advanced Energy Materials,9(24).

Wang, Yang,et al."Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Acceptors with Fine-Tuned Optoelectronic Properties: Toward Efficient Additive-Free Nonfullerene Organic Solar Cells".Advanced Energy Materials 9.24(2019).