In:
Journal of Polymer Science Part A: Polymer Chemistry, Wiley, Vol. 53, No. 13 ( 2015-07), p. 1558-1566
Abstract:
In this article, pendent thiophene (2‐butyl‐5‐octylthiophene) side chain is used to modify the backbone of the polymers containing benzo[1,2‐b:4,5‐b′]dithiophene (BDT) and thieno[3,4‐c] pyrrole‐4,6‐dione (TPD). Compared with the dodecyloxy side‐chained polymer (P1), pendent thiophene‐based polymers (P2 and P3) show similar number‐average molecular weight ( M n ), polydispersity index, thermal stability ( T d ∼ 334–337 °C), and optical band gaps ( ) (∼1.8 eV). Polymer (P2)‐based BDT with pendent thiophene and ethylhexyl‐modified TPD shows relatively low‐lying HOMO energy level (−5.52 eV) and nearly 1 V high open circuit voltage ( V OC ). The polymer solar cell devices based on three copolymers show power conversion efficiencies from 2.01% to 4.13%. The hole mobility of these polymers tested by space charge limited current method range from 3.4 × 10 −4 to 9.2 × 10 −4 cm 2 V −1 s −1 . © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015 , 53 , 1558–1566
Type of Medium:
Online Resource
ISSN:
0887-624X
,
1099-0518
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
3004641-5
detail.hit.zdb_id:
1473076-5
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