Effect of substituent groups on quinoxaline-based random copolymers on the optoelectronic and photovoltaic properties

Date

2016-09-28

Author

CEVHER, ŞEVKİ CAN
HIZALAN, Gonul
TEMIZ, Cansel
Udum, Yasemin Arslan
Toppare, Levent Kamil
Çırpan, Ali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

137
views

0
downloads

In this study, three low band gap donor-acceptor (D-A) type quinoxaline-based random copolymers were synthesized. The effect of varying substituent groups on quinoxaline groups on optoelectronic properties and the performance of bulk-heterojunction polymer solar cells was investigated. Electrochemical and optical studies indicate that these copolymers are promising materials for both electrochromic and polymer solar cells applications. Two random polymers were found as excellent candidates for NIR electrochromic devices owing to their 60% and 94% optical contrast values respectively in NIR region with less than 1 s switching times. Polymer solar cells were constructed using the copolymers as the donor components together with PC71BM as the acceptor in the active layer. Among all, the highest PCE was reported as 2.13%.

Subject Keywords

Quinoxaline, Benzotriazole, Polymer solar cell

URI

https://hdl.handle.net/11511/48523

Journal

POLYMER

DOI

https://doi.org/10.1016/j.polymer.2016.08.076

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Alkyl end group Modification of Benzotriazole and Thiophene Containing Conjugated Polymers Cevher, Şevki Can; Keleş, Duygu; Özdemir Hacıoğlu, Şerife; Toppare, Levent Kamil; Çırpan, Ali (null; 2016-07-21) This study focused on modifying the alkyl‐end‐group of benzotriazole and thiophene containing conjugated polymers. Introducing a moiety with struc‐turally rigid and tendency to enhance the π‐π stacking and also absorption in the high energetic region, influence the both electronic and optic properties of the conjugated polymers. Stille cross coupling chemical polymerization method was performed to synthesize the polymer contains: benzotriazole and bisthiophene. Characterizations of polymers were done in ter...
EFFECT OF π-BRIDGES ON ELECTROCHEMICAL AND PHOTOVOLTAIC PROPERTIES OF BENZOTHIADIAZOLE AND BENZODITHIOPHENE BASED CONJUGATED POLYMERS Dikbıyık, Dilan Ece; Çırpan, Ali; Hızalan Özsoy, Gönül; Department of Chemistry (2022-1-28) In this study, a series of the Donor -π bridge- Acceptor type conjugated polymers (PT1, PT2, and PT3) were designed and synthesized via Pd-catalyzed Stille polycondensation reactions. Synthesized polymers were used as donor moieties and blended with acceptor unit PC71BM to form the active layer of the bulk heterojunction organic solar cell (BHJ OSC). Polymers contain electron-deficient benzothiadiazole (BT) as acceptor unit and electron-rich benzodithiophene (BDT) as donor unit. Moreover, thiophene [T], sel...
Effect of High Hydrostatic Pressure (HHP) Treatment on Physicochemical Properties of Horse Mackerel (Trachurus trachurus) ERKAN ÖZDEN, Nuray; Uretener, Gonca; Alpas, Hami; Selcuk, Arif; Ozden, Ozkan; Buzrul, Sencer (2011-10-01) The basic objective of this study was to determine the effect of high hydrostatic pressure (HHP; 220, 250 and 330 MPa), holding time (5 and 10 min) and temperature (7, 15 and 25 A degrees C) on some quality parameters of horse mackerel such as colour changes, thiobarbituric acid (TBA-i) and trimethylamine nitrogen (TMA-N), free amino acid content. HHP increased L (*) values of horse mackerel. The a (*) and b (*) of treated horse mackerel did not change significantly after HHP applications. After, HHP, TBA-i...
Effect of Cr and Mo doping on the electrochemical properties of freeze-dried LiCoO2 Buyukburc, Atil; Aydınol, Mehmet Kadri (2014-10-01) In this study, LiCoO2 is doped with 2 mol.% Cr and Mo in order to determine the effect of these elements on the electrochemical performance. Precursors are synthesized by means of freeze drying. Calcination is applied at 750 degrees C for 24 h. Doping content and calcination temperature as well as duration are very important for producing impurity-free layered LiCoO2. If the doping content is larger than 2 mol.% or when the calcination temperature is decreased to 550 degrees C, impurity phases are seen. As ...
Synthesis of bistriphenylamine- and benzodithiophene-based random conjugated polymers for organic photovoltaic applications CETIN, Asli; ISTANBULLUOGLU, Cagla; HACIOGLU, Serife Ozdemir; CEVHER, ŞEVKİ CAN; Toppare, Levent Kamil; Çırpan, Ali (2017-11-15) In this study, donor-acceptor random polymers containing benzotriazole acceptor and bistriphenylamine and benzodithiophene donors, P1 and P2, were successfully synthesized by Stille coupling polymerization. The effect of bistriphenylamine moiety and thiophene -conjugated linker on electrochemical, spectroelectrochemical, and optical behaviors of the polymers were investigated. Optoelectronic properties and photovoltaic performance of the polymers were examined under the illumination of AM 1.5G, 100 mWcm(-2)...

Citation Formats

Ş. C. CEVHER, G. HIZALAN, C. TEMIZ, Y. A. Udum, L. K. Toppare, and A. Çırpan, “Effect of substituent groups on quinoxaline-based random copolymers on the optoelectronic and photovoltaic properties,” POLYMER, pp. 208–216, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48523.