dc.contributor.author |
Ibraikulov, Olzhas A.
|
|
dc.contributor.author |
Bechara, Rony
|
|
dc.contributor.author |
Chavez, Patricia
|
|
dc.contributor.author |
Bulut, Ibrahim
|
|
dc.contributor.author |
Tastanbekov, Dias
|
|
dc.contributor.author |
Leclerc, Nicolas
|
|
dc.contributor.author |
Hebraud, Anne
|
|
dc.contributor.author |
Heinrich, Benoît
|
|
dc.contributor.author |
Berson, Solenn
|
|
dc.contributor.author |
Lemaitre, Noëlla
|
|
dc.contributor.author |
Chochos, Christos L.
|
|
dc.contributor.author |
Lévêque, Patrick
|
|
dc.contributor.author |
Heiser, Thomas
|
|
dc.creator |
Olzhas A., Ibraikulov |
|
dc.date.accessioned |
2017-12-22T03:23:50Z |
|
dc.date.available |
2017-12-22T03:23:50Z |
|
dc.date.issued |
2015-08-01 |
|
dc.identifier |
DOI:10.1016/j.orgel.2015.04.018 |
|
dc.identifier.citation |
Olzhas A. Ibraikulov, Rony Bechara, Patricia Chavez, Ibrahim Bulut, Dias Tastanbekov, Nicolas Leclerc, Anne Hebraud, Benoît Heinrich, Solenn Berson, Noëlla Lemaitre, Christos L. Chochos, Patrick Lévêque, Thomas Heiser, Using pyridal[2,1,3]thiadiazole as an acceptor unit in a low band-gap copolymer for photovoltaic applications, In Organic Electronics, Volume 23, 2015, Pages 171-178 |
|
dc.identifier.issn |
15661199 |
|
dc.identifier.uri |
https://www.sciencedirect.com/science/article/pii/S1566119915001858 |
|
dc.identifier.uri |
http://nur.nu.edu.kz/handle/123456789/3016 |
|
dc.description.abstract |
Abstract In this report, we explore the optoelectronic properties of a low band-gap copolymer based on the alternation of electron rich (thiophene and thienothiophene units) and electron deficient units (pyridal[2,1,3]thiadiazole (Py)). Initial density functional theory calculations point out the interest of using the Py unit to optimize the polymer frontier orbital energy levels. A high molecular weight (Mn=49kg/mol) solution-processable copolymer, based on Py, thiophene and thienothiophene units, has been synthesized successfully. From cyclic-voltammetry and UV–visible absorption measurements a relatively deep HOMO level (−5.1eV) and an optical band-gap (1.48eV) have been estimated. Charge transport both in horizontal and vertical directions were extracted from field-effect transistors and space charge limited current diodes, respectively, and led to a relatively high in-plane hole mobility in pure polymer films (0.7×10−2cm2V−1s−1). GIWAXS results showed almost identical in-plane lamellar morphologies, with similar average size and orientation of the polymer crystalline domains in both, pure polymer films and polymer:fullerene blends. Also, the gate-voltage dependence of the field-effect mobility revealed that the energy disorder in the polymer domains was not altered by the introduction of fullerenes. The nevertheless significantly higher out-of-plane hole mobility in blends, in comparison to pure polymer films, was attributed to the minor amorphous polymer phase, presumably localized close to the donor/acceptor interface, whose signature was observed by UV–vis absorption. Promising photovoltaic performances could be achieved in a standard device configuration. The corresponding power conversion efficiency of 4.5% is above the value achieved previously with a comparable polymer using benzo [2,1,3]thiadiazole instead of Py as acceptor unit. |
|
dc.relation.ispartof |
Organic Electronics |
|
dc.subject |
Polymer solar cells |
|
dc.subject |
Energy disorder |
|
dc.subject |
Charge transport |
|
dc.subject |
Field-effect mobility |
|
dc.subject |
Space-charge-limited current |
|
dc.subject |
Morphology |
|
dc.title |
Using pyridal[2,1,3]thiadiazole as an acceptor unit in a low band-gap copolymer for photovoltaic applications |
|
dc.type |
Article |
|
dc.rights.license |
Copyright © 2015 Elsevier B.V. All rights reserved. |
|
dcterms.publisher |
Organic Electronics |
|
elsevier.identifier.doi |
10.1016/j.orgel.2015.04.018 |
|
elsevier.identifier.eid |
1-s2.0-S1566119915001858 |
|
elsevier.identifier.pii |
S1566-1199(15)00185-8 |
|
elsevier.identifier.scopusid |
84928656476 |
|
elsevier.volume |
23 |
|
elsevier.coverdate |
2015-08-01 |
|
elsevier.coverdisplaydate |
August 2015 |
|
elsevier.startingpage |
171 |
|
elsevier.endingpage |
178 |
|
elsevier.openaccess |
0 |
|
elsevier.openaccessarticle |
false |
|
elsevier.openarchivearticle |
false |
|
elsevier.teaser |
In this report, we explore the optoelectronic properties of a low band-gap copolymer based on the alternation of electron rich (thiophene and thienothiophene units) and electron deficient units (pyridal[2,1,3]thiadiazole... |
|
elsevier.aggregationtype |
Journal |
|