In:
Journal of Polymer Science Part A: Polymer Chemistry, Wiley, Vol. 55, No. 4 ( 2017-02-15), p. 699-706
Abstract:
Most of the narrow band‐gap polymers exhibit low open‐circuit voltage ( V oc ) which limits the further improvement of photovoltaic performance. How to improve the V oc through fine tuning of the chemical structure is a significant project that worth exploring. As a big and strong electron accepting unit, fluorinated‐quinoxaline based copolymers always show a narrow band gap and broad absorption which makes it a good template to study the changes of V oc through structure tuning. In this work, the effect of the subtle chemical structure modulation of polymer side chains and main chain on the V oc and photovoltaic performance was investigated. The V oc was adjusted effectively, and the power conversion efficiency (PCE) also was improved simultaneously. Although the PCE was not high enough as those high‐performance polymers reported at present, the result indicates that fine tuning of chemical structure is an effective way to improve V oc and photovoltaic performance for narrow band‐gap polymers. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 699–706
Type of Medium:
Online Resource
ISSN:
0887-624X
,
1099-0518
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
3004641-5
detail.hit.zdb_id:
1473076-5
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