Photovoltaic properties of benzotriazole containing alternating donor–acceptor copolymers: Effect of alkyl chain length

Date

2012-12

Author

Baran, Derya
Balan, Abidin
Stubhan, Tobias
Ameri, Tayebeh
Toppare, Levent Kamil
Brabec, Christoph J.

Metadata

Show full item record

Item Usage Stats

257
views

0
downloads

A series of variable alkyl chain length substituted donor-acceptor (D-A) conjugated polymers with thiophene ring as the donor and benzotriazole moiety as the acceptor has been investigated in bulk heterojunction solar cells. The optical and electrochemical properties showed that the absorption onsets and the energy levels of the copolymers were not affected by alkyl substitution revealing 1.9 eV of optical band gap. The morphologies of the blend film can be fine-tuned by increasing the chain length attached to the benzotriazole unit. Photovoltaic devices were fabricated using (6,6)-phenyl-C-61-butyric acid methyl ester (PC60BM) and (6,6)-phenyl-C-71-butyric acid methyl ester (PC70BM) as the acceptors. The maximum performance was achieved with a V-oc, of 0.75V, J(sc) of 3.70 mA/cm(2), FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).

Subject Keywords

Benzotriazole, Effect of chain length, Organic photovoltaics, Solar cell, Donor–acceptor polymers

URI

https://hdl.handle.net/11511/28289

Journal

Synthetic Metals

DOI

https://doi.org/10.1016/j.synthmet.2012.09.017

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Photovoltaic Properties of Poly(Triphenylamine-Thiazolo[5,4-d] Thiazole) Copolymer Dye in Bulk-Hetorojunction Organic Solar Cells Olgun, Ugursoy; Gulfen, Mustafa; HIZALAN, Gonul; Çırpan, Ali; Toppare, Levent Kamil (2017-04-01) In this study, the photovoltaic properties of poly(triphenylamine-thiazolo[5,4-d]thiazole) alternating copolymer dye in bulk heterojunction polymer solar cells were examined. The copolymer is a red colored dye material with high thermal stability, good solubility and low-band gap energy. The band gap energy of the polymer was determined as 1.36 eV. The conductivity of the polymer thin film was measured as 1.5x10(-5) S/cm. The polymer solar cells were fabricated using the different ratios of the blends of th...
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...
Syntheses and characterization of benzotriazole, thienopyrroledione and benzodithiophene containing conjugated random terpolymers for organic solar cells Göksu, Kardelen.; Çırpan, Ali; Department of Chemistry (2019) Two random terpolymers, PBTS and PBTSe were designed and synthesized successfully as the donor units for polymer organic solar cell. Desired terpolymers contain alkoxy-benzodithiophene as an electron rich unit and Noctylthieno[3,4,c]pyrrole-4,6-dione (TPD) as the electron deficient group. Furthermore, thiophene and selenophene π bridges were introduced to benzotriazole unit as the acceptor moieties into copolymer backbone. The properties of synthesized terpolymers solar cell device were investigated by opti...
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...
Electrochromism in multichromic conjugated polymers: Thiophene and azobenzene derivatives on the main chain Apaydin, Dogukan Hazar; Akpinar, Hava; Sendur, Merve; Toppare, Levent Kamil (2012-01-15) Novel donor-acceptor-donor type polymers containing azobenzene group in polymer backbone chains were synthesized and their electrochromic properties were investigated. To increase the strength of the acceptor unit, fluorinated azobenzene containing donor-acceptor-donor type polymer was also synthesized. Cyclic voltammetry and spectroelectrochemistry studies showed that poly((E)-1,2-bis(4-(4-hexylthiophen-2-yl)phenyl)diazene) (P2) and poly((E)-1,2-bis(2-fluoro-4-(4-hexylthiophen-2-yl)phenyl) diazene) (P3) we...

Citation Formats

D. Baran, A. Balan, T. Stubhan, T. Ameri, L. K. Toppare, and C. J. Brabec, “Photovoltaic properties of benzotriazole containing alternating donor–acceptor copolymers: Effect of alkyl chain length,” Synthetic Metals, pp. 2047–2051, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28289.