9.0% power conversion efficiency from ternary all-polymer solar cells
Journal article, 2017

Integration of a third component into a single-junction polymer solar cell (PSC) is regarded as an attractive strategy to enhance the performance of PSCs. Although binary all-polymer solar cells (all-PSCs) have recently emerged with compelling power conversion efficiencies (PCEs), the PCEs of ternary all-PSCs still lag behind those of the state-of-the-art binary all-PSCs, and the advantages of ternary systems are not fully exploited. In this work, we realize high-performance ternary all-PSCs with record-breaking PCEs of 9% and high fill factors (FF) of over 0.7 for both conventional and inverted devices. The improved photovoltaic performance benefits from the synergistic effects of extended absorption, more efficient charge generation, optimal polymer orientations and suppressed recombination losses compared to the binary all-PSCs, as evidenced by a set of experimental techniques. The results provide new insights for developing high-performance ternary all-PSCs by choosing appropriate donor and acceptor polymers to overcome limitations in absorption, by affording good miscibility, and by benefiting from charge and energy transfer mechanisms for efficient charge generation.

Author

Zhaojun Li

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Xiaofeng Xu

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

W. Zhang

Lund University

Xiangyi Meng

Xi'an Jiaotong University

Z. Genene

Addis Ababa University

W. Ma

Xi'an Jiaotong University

W. Mammo

Addis Ababa University

A. Yartsev

Lund University

Mats Andersson

Flinders University

R. A. J. Janssen

Technische Universiteit Eindhoven

Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Energy and Environmental Sciences

1754-5692 (ISSN)

Vol. 10 10 2212-2221

SUstainable Novel FLexible Organic Watts Efficiently Reliable (SUNFLOWER)

European Commission (FP7), 2011-10-01 -- 2016-03-31.

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Energy

Materials Science

Subject Categories

Materials Engineering

Chemical Sciences

DOI

10.1039/c7ee01858d

More information

Latest update

3/20/2018