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http://hdl.handle.net/1942/30403
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DC Field | Value | Language |
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dc.contributor.author | VAN LANDEGHEM, Melissa | - |
dc.contributor.author | LENAERTS, Ruben | - |
dc.contributor.author | KESTERS, Jurgen | - |
dc.contributor.author | MAES, Wouter | - |
dc.contributor.author | Goovaerts, Etienne | - |
dc.date.accessioned | 2020-01-24T11:58:20Z | - |
dc.date.available | 2020-01-24T11:58:20Z | - |
dc.date.issued | 2019 | - |
dc.date.submitted | 2020-01-24T11:55:31Z | - |
dc.identifier.citation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21 (41) , p. 22999 -23008 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | http://hdl.handle.net/1942/30403 | - |
dc.description.abstract | The greater chemical tunability of non-fullerene acceptors enables fine-tuning of the donor-acceptor energy level offsets, a promising strategy towards increasing the open-circuit voltage in organic solar cells. Unfortunately, this approach could open an additional recombination channel for the charge-transfer (CT) state via a lower-lying donor or acceptor triplet level. In this work we investigate such electron and hole back-transfer mechanisms in fullerene-free solar cells incorporating the novel molecular acceptor 2,4-diCN-Ph-DTTzTz. The transition to the low-driving force regime is studied by comparing blends with well-established donor polymers P3HT and MDMO-PPV, which allows for variation of the energetic offsets at the donor-acceptor interface. Combining various optical spectroscopic techniques, the CT process and subsequent triplet formation are systematically investigated. Although both back-transfer mechanisms are found to be energetically feasible in both blends, markedly different triplet-mediated recombination processes are observed for the two systems. The kinetic suppression of electron back-transfer in the blend with P3HT suggests that energy losses due to triplet formation on the polymer can be avoided, regardless of favorable energetic alignment. | - |
dc.description.sponsorship | Research Foundation Flanders (FWO - Vlaanderen)FWO [G0B6715N] | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Impact of the donor polymer on recombination via triplet excitons in a fullerene-free organic solar cell | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 23008 | - |
dc.identifier.issue | 41 | - |
dc.identifier.spage | 22999 | - |
dc.identifier.volume | 21 | - |
local.format.pages | 10 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Goovaerts, E (reprint author), Univ Antwerp, Phys Dept, Univ Pl 1, B-2610 Antwerp, Belgium. | - |
dc.description.notes | etienne.goovaerts@uantwerpen.be | - |
local.publisher.place | THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.source.type | Article | - |
dc.identifier.doi | 10.1039/c9cp03793d | - |
dc.identifier.isi | WOS:000492992600030 | - |
dc.contributor.orcid | Van Landeghem, Melissa/0000-0001-8927-5358 | - |
dc.identifier.eissn | - | |
dc.identifier.eissn | 1463-9084 | - |
local.provider.type | wosris | - |
local.uhasselt.uhpub | yes | - |
local.uhasselt.international | no | - |
item.validation | ecoom 2020 | - |
item.fulltext | With Fulltext | - |
item.accessRights | Restricted Access | - |
item.fullcitation | VAN LANDEGHEM, Melissa; LENAERTS, Ruben; KESTERS, Jurgen; MAES, Wouter & Goovaerts, Etienne (2019) Impact of the donor polymer on recombination via triplet excitons in a fullerene-free organic solar cell. In: PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21 (41) , p. 22999 -23008. | - |
item.contributor | VAN LANDEGHEM, Melissa | - |
item.contributor | LENAERTS, Ruben | - |
item.contributor | KESTERS, Jurgen | - |
item.contributor | MAES, Wouter | - |
item.contributor | Goovaerts, Etienne | - |
crisitem.journal.issn | 1463-9076 | - |
crisitem.journal.eissn | 1463-9084 | - |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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c9cp03793d.pdf Restricted Access | Published version | 3.4 MB | Adobe PDF | View/Open Request a copy |
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