Cited 0 time in webofscience Cited 3 time in scopus

Regioregular polymers containing benzodithiophene and thienothiophene segments with different electron donating side chains for high-performance polymer solar cells

Title
Regioregular polymers containing benzodithiophene and thienothiophene segments with different electron donating side chains for high-performance polymer solar cells
Authors
Heo, HyojungBan, LyeojinNam, GeonikKim, HonggiJang, SeokhoonLee, Youngu
DGIST Authors
Heo, Hyojung; Ban, Lyeojin; Nam, Geonik; Kim, Honggi; Jang, Seokhoon; Lee, Youngu
Issue Date
2018-11
Citation
Dyes and Pigments, 158, 249-258
Type
Article
Article Type
Article
Author Keywords
Regioregular polymerPTB polymerSide chain engineeringAlkylthio thiophene groupsPolymer solar cells
Keywords
DONOR-ACCEPTOR POLYMERSOPEN-CIRCUIT VOLTAGEPHOTOVOLTAIC PERFORMANCEEFFICIENCYCOPOLYMERSDITHIENOSILOLEAGGREGATIONTERPOLYMERSORIENTATIONMORPHOLOGY
ISSN
0143-7208
Abstract
This study describes a systematic study on side chain effect in the poly(thieno[3,4-b]thiophene)benzo[1,2-b:4,5-b′]dithiophene (PTB) polymer series based regioregular polymers with D1-A-D2-A configuration, denoted as PTT-BDT(R1)-TT-BDT(R2). The synthesized three regioregular polymers employ the same conjugated backbone but with different side chains (R1, R2), P1; hexyldecyl thiophene (HD, R1) and ethylhexyl thiophene (EH, R2), P2; hexyldecyl thiophene (HD, R1) and ethylhexylthio thiophene (S-EH, R2), P3; hexyldecylthio thiophene (S-HD, R1) and ethylhexylthio thiophene (S-EH, R2). Introduction of different side chains influenced optical, electrochemical, molecular packing properties, and device performance. The P3 polymer with alkylthio thiophene groups as R1 and R2 showed much broader light absorption and lower HOMO level than other polymers with relatively less alkylthio thiophene groups. Furthermore, the P3 polymer exhibited favorable polymer orientation and short π-π stacking distance for efficient charge transport in the BHJ PSCs. The P3 based bulk-heterojunction (BHJ) polymer solar cell (PSC) showed an improved PCE of 7.20% while the P1 and P2 based BHJ PSC devices showed PCEs of 5.27% and 6.45%, respectively. This result, within our knowledge, is the highest record among BHJ PSCs based PTB polymer series composed of benzo[1,2-b:4,5-b']dithiophene (BDT) segment and non-fluorinated alkyl ester (COOR) side chain substituted thieno[3,4-b]thiophene (TT) segment. © 2018
URI
http://hdl.handle.net/20.500.11750/6584
DOI
10.1016/j.dyepig.2018.05.047
Publisher
Elsevier BV
Related Researcher
  • Author Lee, Youngu Organic & Printed Electronics Laboratory(OPEL)
  • Research Interests OTF Solar cell; OLED; Printed Electronics; 유기박막형 태양전지
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringOrganic & Printed Electronics Laboratory(OPEL)1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE