Energy-effectively printed all-polymer solar cells exceeding 8.61% efficiency

All-polymer solar cells (all-PSCs) have attracted tremendous attention in the past few years due to their unique advantages. However, up to now most of high-efficiency all-PSCs are processed by spin-coating with complicated post treatment processes, which is ill-suited to a large-area roll-to-roll (R2R) technique. In this work, high-efficiency all-PSCs based on PTB7-Th and PNDI-T10 are achieved by one of R2R compatible printing techniques, i.e. doctor-blading, without any annealing treatment. It was found that incorporating an additive into all polymer blends solution can prolong the drying time of all polymer nanocomposites from 120 to 1000 s to form a better bulk heterojunction morphology and a higher crystallinity, which thus reduce charge recombination and show much better electrical impedance spectroscopy parameters. Record-breaking power conversion efficiencies (PCEs) of 8.61% and high fill factors (FF) of 0.71 are achieved by doctor-blading under an extremely process-simple and energy-effective conditions. Moreover, large-area (2.03 cm 2 ) flexible ITO-free all-PSCs by doctor-blading with record-breaking PCEs of 6.65% and FF of 0.65 are realized, which are much higher than conventional fullerene-based ones under the same condition, demonstrating that all-PSCs are more suitable for the flexible device structure and have a bright future towards practical application with R2R manufacture.

Dong, ShengSouth China University of Technology (författare)
Li, Zhaojun,1989Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)zhaojun (författare)
Zheng, W. H.Jinan University (författare)
Yang, J. Y.Jinan University (författare)
Liu, AleiJinan University (författare)
Cai, WanzhuJinan University (författare)
Liu, FengShanghai Jiao Tong University (författare)
Jiang, YufengLawrence Berkeley National Laboratory (författare)
Russell, Thomas P.Lawrence Berkeley National Laboratory (författare)
Huang, FeiSouth China University of Technology (författare)
Wang, Ergang,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ergang (författare)
Hou, LintaoJinan University (författare)
Jinan UniversitySouth China University of Technology (creator_code:org_t)

Av författaren/redakt...: Lin, Y. B.; Dong, Sheng; Li, Zhaojun, 198 ...; Zheng, W. H.; Yang, J. Y.; Liu, Alei; visa fler...; Cai, Wanzhu; Liu, Feng; Jiang, Yufeng; Russell, Thomas ...; Huang, Fei; Wang, Ergang, 19 ...; Hou, Lintao; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Polymerteknologi

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