A Volatile Solid Additive Enables Oligothiophene All-Small-Molecule Organic Solar Cells with Excellent Commercial Viability

Dingqin Hu; Hua Tang; Safakath KaruthedathQianqian ChenSi ChenJafar I. KhanHeng LiuQianguang YangJulien GorenflotChristopher E. PetoukhoffTainan DuanXinhui LuFrederic LaquaiShirong Lu

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A Volatile Solid Additive Enables Oligothiophene All-Small-Molecule Organic Solar Cells with Excellent Commercial Viability

机译：A Volatile Solid Additive Enables Oligothiophene All-Small-Molecule Organic Solar Cells with Excellent Commercial Viability

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The commercial viability of all-small-molecule (ASM) organic solar cells(OSCs) requires high efficiency, long-term stability, and low-cost production.However, satisfying all these factors at the same time remains highly challenging.Herein, a volatile solid additive, namely, 1,8-dichloronaphthalene(DCN) is demonstrated to simultaneously enhance the power conversionefficiency (PCE) and the storage, thermal as well as photo stabilities of oligothiopheneASM-OSCs with concise and low-cost syntheses. The improvedPCEs are mainly due to the DCN-induced morphology control with improvedexciton dissociation and reduced non-geminate recombination. Notably, thePCE of 16.0% stands as the best value for oligothiophene ASM-OSCs and isamong the top values for all types of binary ASM-OSCs. In addition, devicesincorporating DCN have shown remarkable long-term stability, retaining over90% of their initial PCE after dark storage aging of 3000 h and thermal or lightstressing of 500 h. The findings demonstrate that the volatile-solid-additivestrategy can be a simple yet effective method of delivering highly efficient andstable oligothiophene ASM-OSCs with excellent commercial viability.

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《Advanced functional materials》 |2023年第6期|2211873.1-2211873.12|共12页
作者
Dingqin Hu; Hua Tang; Safakath KaruthedathQianqian ChenSi ChenJafar I. KhanHeng LiuQianguang YangJulien GorenflotChristopher E. PetoukhoffTainan DuanXinhui LuFrederic LaquaiShirong Lu;
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Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714, P. R. China,Chongqing University Chongqing 400044, P. R. China;

KAUST Solar Center Physical Sciences and Engineering Division (PSE) Material Science and Engineering Program (MSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900, Kingdom of Saudi Arabia;

KAUST Solar Center Physical Sciences and Engineering Division (PSE) Material Science and Engineering Program (MSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900, Kingdom of Saudi ArabiaDepartment of Physics The Chinese University of Hong Kong New Territories, Hong Kong 999077, P. R. ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714, P. R. ChinaChongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714, P. R. China,Chongqing University Chongqing 400044, P. R. China,Department of Material Science and Technology Taizhou University Taizhou 318000, P. R. Chi;

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all-small-molecule organic solar cells; long-term stability; oligothiophene donors; solid additives;

A Volatile Solid Additive Enables Oligothiophene All-Small-Molecule Organic Solar Cells with Excellent Commercial Viability

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