Non-fullerene acceptor photostability and its impact on organic solar cell lifetime

被引：71

作者：

Clarke, Andrew J. ^{[1
]}

Luke, Joel ^{[2
,3
]}

Meitzner, Rico ^{[4
]}

Wu, Jiaying ^{[5
,6
]}

Wang, Yuming ^{[7
]}

Lee, Harrison K. H. ^{[1
]}

Speller, Emily M. ^{[1
]}

Bristow, Helen ^{[8
]}

Cha, Hyojung ^{[5
,6
]}

Newman, Michael J. ^{[1
]}

Hooper, Katherine ^{[1
]}

Evans, Alex ^{[9
]}

Gao, Feng ^{[7
]}

Hoppe, Harald ^{[4
]}

McCulloch, Iain ^{[8
,10
]}

Schubert, Ulrich S. ^{[4
,11
]}

Watson, Trystan M. ^{[1
]}

Durrant, James R. ^{[1
,5
,6
]}

Tsoi, Wing C. ^{[1
]}

Kim, Ji-Seon ^{[2
,3
]}

Li, Zhe ^{[12
]}

机构：

[1] Swansea Univ, Coll Engn, SPECIFIC, Bay Campus, Swansea SA1 8EN, W Glam, Wales

[2] Imperial Coll London, Dept Phys, London SW7 2AZ, England

[3] Imperial Coll London, Ctr Processable Elect, London SW7 2AZ, England

[4] Friedrich Schiller Univ Jena, Ctr Energy & Environm Chem Jena CEEC Jena, Philosophenweg 7, D-07743 Jena, Germany

[5] Imperial Coll London, Dept Chem, London W12 0BZ, England

[6] Imperial Coll London, Ctr Processable Elect, London W12 0BZ, England

[7] Linkoping Univ, Div Biomol & Organ Elect, S-58183 Linkoping, Sweden

[8] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England

[9] Cardiff Univ, Sch Engn, Queens Bldg, Cardiff CF24 3AA, Wales

[10] King Abdullah Univ Sci & Technol KAUST, KAUST Solar Ctr KSC, Thuwal 239556900, Saudi Arabia

[11] Friedrich Schiller Univ Jena, Lab Organ & Macromol Chem IOMC, Humboldtstr 10, D-07743 Jena, Germany

[12] Queen Mary Univ London, Sch Engn, Mile End Rd, London E1 4NS, England

来源：

CELL REPORTS PHYSICAL SCIENCE | 2021年 / 2卷 / 07期

基金：

英国工程与自然科学研究理事会; 欧洲研究理事会; 欧盟地平线“2020”; 新加坡国家研究基金会;

关键词：

SET MODEL CHEMISTRY; ELECTRON-ACCEPTOR; ENVIRONMENTAL STABILITY; RESIDUAL ADDITIVES; TOTAL ENERGIES; MDMO-PPV; EFFICIENCY; DEGRADATION; STABILITY/DEGRADATION; POLYMERS;

D O I：

10.1016/j.xcrp.2021.100498

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The development of non-fullerene acceptors (NFAs) has facilitated the realization of efficient organic solar cells (OSCs) with minimal burn-in losses and excellent long-term stability. However, the role of NFA molecular structures on device stability remains unclear, limiting commercialization of NFA-based OSCs. Herein, the photostability of 10 OSC devices, fabricated with various NFAs (O-IDTBR, EH-IDTBR, ITIC, and ITIC-M) blended with donor polymers (PTB7-Th, PffBT4T-2OD, and PBDB-T), is investigated. O-IDTBR and EH-IDTBR form highly stable devices with all three polymers, whereas ITIC and ITIC-M devices suffer from burn-in losses and long-term degradation. Conformational instability is found to be responsible for the poor photostability of ITIC and ITIC-M, resulting in poor device stability. Twisting and potential breakage of the chemical bond that links the end group to the main backbone of ITIC and ITIC-M molecules causes undesirable conformational changes. Potential strategies to overcome such detrimental photo-induced conformational changes in NFAs are proposed.

引用

页数：22

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