Overcoming the morphological and efficiency limit in all-polymer solar cells by designing conjugated random copolymers containing a naphtho[1,2c:5,6-c']bis([1,2,5] thiadiazole)] moiety

Journal article


Publication Details

Author(s): Xie R, Li Z, Zhong W, Ying L, Hu Q, Liu F, Li N, Russell TP, Huang F, Cao Y
Journal: Journal of Materials Chemistry A
Publisher: ROYAL SOC CHEMISTRY
Publication year: 2018
Volume: 6
Journal issue: 46
Pages range: 23295-23300
ISSN: 2050-7488
Language: English


Abstract

The ternary concept based on two electron donors and one electron acceptor has been deployed to extend the absorption as well as photovoltaic performance of all-polymer solar cells (all-PSCs). However, it is still challenging to achieve the delicate morphology of ternary blended bulk-heterojunction films through rational molecular design. To overcome these issues, herein, we designed and synthesized a series of narrow bandgap conjugated copolymers by combining two conjugated polymers with various molar ratios of the naphthobis[1,2,5]thiadiazole (NT) unit (namely, NT00-NT100). All-PSCs were constructed by integrating these resultant copolymers with a commercially available electron-accepting copolymer N2200. The resultant all-PSCs based on the ternary copolymers NT40 exhibited an impressively high power conversion efficiency over 8.0%, which was clearly superior to that obtained for devices based on the NT00:NT100:N2200 blended films. Further characterization of the morphology of the films revealed that the incorporation of the NT unit improved - stacking and a degree of phase separation, which are conducive to exciton diffusion and charge transport.


FAU Authors / FAU Editors

Li, Ning Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)


External institutions with authors

Lawrence Berkeley National Laboratory (LBNL)
Shanghai Jiao Tong University / 上海交通大学
South China University of Technology (SCUT) / 华南理工大学


Research Fields

Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Xie, R., Li, Z., Zhong, W., Ying, L., Hu, Q., Liu, F.,... Cao, Y. (2018). Overcoming the morphological and efficiency limit in all-polymer solar cells by designing conjugated random copolymers containing a naphtho[1,2c:5,6-c']bis([1,2,5] thiadiazole)] moiety. Journal of Materials Chemistry A, 6(46), 23295-23300. https://dx.doi.org/10.1039/c8ta09356c

MLA:
Xie, Ruihao, et al. "Overcoming the morphological and efficiency limit in all-polymer solar cells by designing conjugated random copolymers containing a naphtho[1,2c:5,6-c']bis([1,2,5] thiadiazole)] moiety." Journal of Materials Chemistry A 6.46 (2018): 23295-23300.

BibTeX: 

Last updated on 2019-25-04 at 11:08