Benzotriazole and Benzodithiophene Containing Medium Band Gap Polymer for Bulk Heterojunction Polymer Solar Cell Applications

UNAY, Hande
UNLU, Naime A.
Yildiz, Dilber Esra
Toppare, Levent Kamil
Çırpan, Ali
An alternating donor-acceptor copolymer based on a benzotriazole and benzodithiophene was synthesized and selenophene was incorporated as -bridge. The photovoltaic and optical properties of polymer were studied. The copolymer showed medium band gap and dual absorption peaks in UV-Vis absorption spectra. Photovoltaic properties of P-SBTBDT were performed by conventional device structure. The OSC device based on polymer: PC71BM (1:1, w/w) exhibited the best PCE of 3.60% with a V-oc of 0.67 V, a J(sc) of 8.95 mA/cm(2), and a FF of 60%. This finding was supported with morphological data and space charge limited current (SCLC) mobilities. The hole mobility of the copolymer was estimated through SCLC model. Although surface roughness of the active layer is really high, mobility of a polymer was found as 7.46 x 10(-3) cm(2)/Vs for optimized device that can be attributed to Se-Se interactions due to the larger, more-polarizable Se atom. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 528-535


Electrochemical and Optical Studies of Furan and Thieno[3,2-b]thiophene End Capped Benzotriazole Derivatives
AKBASOGLU, Naime; BALAN, Abidin; BARAN, Derya; Çırpan, Ali; Toppare, Levent Kamil (Wiley, 2010-12-01)
Two new 2-dodecyl benzotriazole (BTz) based donor-acceptor-donor (DAD) type polymers were synthesized and characterized in terms of their electrochemical and spectral properties. These DAD type polymers were synthesized electrochemically from furan or thieno[3,2-b]thiophene (TT) endcapped BTz monomers. Furan based and thieno[3,2-b]thiophene based monomers showed monomer oxidations at 1.15 and 1.25 V, respectively, which eased the formation of conducting polymer films without overoxidation. Cyclic voltammetr...
Benzodithiophene and Benzotriazole Bearing Conjugated Polymers for Electrochromic and Organic Solar Cell Applications
UNLU, Naime Akbasoglu; HACIOGLU, Serife O.; HIZALAN, Gonul; Yildiz, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (The Electrochemical Society, 2017-01-01)
Herein, alternating donor-acceptor type benzodithiophene and benzotriazole bearing copolymers were synthesized and thieno[3,2-b] thiophene and furan units were incorporated as pi-bridges. The application of these polymers for electrochromic and photovoltaic studies were performed. Spectroelectrochemical studies illustrate that both polymers showed multichromic behavior due to tailoring of polaron bands in visible region. Photovoltaic properties of P2 were performed by conventional device structure. The best...
Viscoelastic properties of reactive and non-reactive blends of ethylene-methyl acrylate copolymers with styrene-maleic anhydride copolymer
Bayram, G; Yılmazer, Ülkü; Xanthos, M (Wiley, 2001-02-01)
The effects of compatibilizing reactions on the viscoelastic properties and morphology of ethylene-methyl acrylate copolymers were studied. Potentially reactive blends of styrene-maleic anhydride copolymer (SMAH) and a terpolymer of ethylene/methyl acrylate/glycidyl methacrylate (E-MA-GMA) were compared with a nonreactive blend of SMAH and an ethylene/methyl acrylate (E-MA) copolymer with similar rheological properties. Melt mixing was carried out in a batch mixer and in a co-rotating twin screw extruder. T...
Benzotriazole and benzothiadiazole containing conjugated copolymers for organic solar cell applications
KARAKUS, Melike; APAYDIN, Dogukan Hazar; Yildiz, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (Elsevier BV, 2012-03-09)
2-Dodecyl benzotriazole (BTz) and benzothiadiazole (BTd) containing copolymers poly(4-(2-dodecyl-2H-benzo[d][1,2,3]triazol-4-yl)benzo[c][1,2,5]thiadiazole (P1), poly(4-(5-(2-dodecyl-7-(thiophen-2yl)-2H-benzo[d][1,2,3]triazol-4-yl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole (P2) and poly(4-(5-(2-dodecyl-7-(4-hexylthiophen-2-yl)-2H-benzo[d] [1,2,3]triazol-4-yl)-3-hexylthiophen-2-yl) benzo[c][1,2,5] thiadiazole (P3) were synthesized via Suzuki polycondensation. We report the application of conjugated copolymers i...
Spray-processable thiazolothiazole-based copolymers with altered donor groups and their electrochromic properties
Akpinar, Hava Zekiye; UDUM, YASEMİN; Toppare, Levent Kamil (Wiley, 2013-09-15)
Two novel thiazolo[5,4-d] thiazole containing donor-acceptor type alternating copolymers, poly[2-(5-(2-decyl-2H-benzo[d][1,2,3] triazol-4-yl) thiophen-2-yl)-5-(thiophen-2-yl) thiazolo [5,4-d] thiazole] (BTzTh) and poly[2-(5-(2-decyl-2H-benzo[d][1,2,3]-triazol-4-yl) furan-2-yl)-5-(furan-2-yl) thiazolo[5,4-d] thiazole] (BTzFr) were synthesized by Stille coupling polymerization and their electrochemical and electrochromic properties were explored. Electrochemical activities of the spray-casted polymer films we...
Citation Formats
H. UNAY et al., “Benzotriazole and Benzodithiophene Containing Medium Band Gap Polymer for Bulk Heterojunction Polymer Solar Cell Applications,” JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, pp. 528–535, 2015, Accessed: 00, 2020. [Online]. Available: