Energy-effectively printed all-polymer solar cells exceeding 8.61% efficiency
Artikel i vetenskaplig tidskrift, 2018

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.

Doctor-blading

All polymer solar cell

Larger-area and ITO-free

High efficiency

Additive

Printing

Författare

Y. B. Lin

Jinan University

Sheng Dong

South China University of Technology

Zhaojun Li

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

W. H. Zheng

Jinan University

J. Y. Yang

Jinan University

Alei Liu

Jinan University

Wanzhu Cai

Jinan University

Feng Liu

Shanghai Jiao Tong University

Yufeng Jiang

Lawrence Berkeley National Laboratory

Thomas P. Russell

Lawrence Berkeley National Laboratory

Fei Huang

South China University of Technology

Ergang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Ergang Wang Group

Lintao Hou

Jinan University

Nano Energy

2211-2855 (ISSN)

Vol. 46 428-435

Ämneskategorier

Polymerkemi

Polymerteknologi

Materialkemi

DOI

10.1016/j.nanoen.2018.02.035

Mer information

Senast uppdaterat

2018-03-07