High-Performance Annealing-Free Polythiophene-Based Organic Solar Cells Enabled by Volatile Solid Additive

Liu, Bin1; Gamez-Valenzuela, Sergio1; Lee, Jin-Woo2; Li, Bolin1; Yang, Wanli1; Wang, Keli1; Zhong, Zhicheng1; Yang, Jie1; Wang, Zhengfei1; Xu, Changjing1; Sun, Huiliang3; Kim, Bumjoon J.2; Guo, Xugang1

2024-07-01

10.1021/acsenergylett.4c01284

ACS ENERGY LETTERS   影响因子和分区

2380-8195

Polythiophene (PT)-based organic solar cells (OSCs) present a promising avenue for photovoltaic advancement due to their simple molecular structure and low-cost synthesis. However, their high crystalline characteristics and suboptimal molecular packing hinder efficiency and stability improvement. Herein, we strategically introduced a new in situ volatile solid additive, benzothiophene (BT), engineered for its complete removal during spin-coating, thus eliminating the need for high-temperature annealing. Comparative studies with its analogs with varied numbers of thiophene units, the thermally volatile benzodithiophene (BDT) and nonvolatile benzotrithiophene (BTT), further underscore the advantages of BT additive in refining the intermolecular interactions and optimizing the blend morphology within PTVT-T:BTP-ec9 films. As a result, the OSCs using volatile BT additive achieved an impressive power conversion efficiency (PCE) approaching 18.0% without post-treatment and exceptional thermal stability with a T- 80 lifespan of over 3365 h. These findings herald the potential of the volatilizable BT additive toward scalable manufacturing of high-efficiency and cost-effective OSCs.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China["52203227","52173172"] ; Shenzhen Science and Technology Program["JCYJ20220530113802005","RCBS20221008093222011","KCXST20221021111413031"] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515011048] ; Korean government["RS-2023-00283244","RS-2023-00217884"]

Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001265554900001

AMER CHEMICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea
3.Guangzhou Univ, Ctr Adv Analyt Sci, Sch Chem & Chem Engn, Guangzhou Key Lab Sensing Mat & Devices, Guangzhou 510006, Peoples R China

Liu, Bin,Gamez-Valenzuela, Sergio,Lee, Jin-Woo,et al. High-Performance Annealing-Free Polythiophene-Based Organic Solar Cells Enabled by Volatile Solid Additive[J]. ACS ENERGY LETTERS,2024.

Liu, Bin.,Gamez-Valenzuela, Sergio.,Lee, Jin-Woo.,Li, Bolin.,Yang, Wanli.,...&Guo, Xugang.(2024).High-Performance Annealing-Free Polythiophene-Based Organic Solar Cells Enabled by Volatile Solid Additive.ACS ENERGY LETTERS.

Liu, Bin,et al."High-Performance Annealing-Free Polythiophene-Based Organic Solar Cells Enabled by Volatile Solid Additive".ACS ENERGY LETTERS (2024).