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http://hdl.handle.net/1942/37679
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DC Field | Value | Language |
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dc.contributor.author | Fritsch, Tobias | - |
dc.contributor.author | Kurpiers, Jona | - |
dc.contributor.author | Roland, Steffen | - |
dc.contributor.author | Tokmoldin, Nurlan | - |
dc.contributor.author | Shoaee, Safa | - |
dc.contributor.author | Ferron, Thomas | - |
dc.contributor.author | Collins, Brian A. | - |
dc.contributor.author | Janietz, Silvia | - |
dc.contributor.author | VANDEWAL, Koen | - |
dc.contributor.author | Neher, Dieter | - |
dc.date.accessioned | 2022-07-07T13:32:46Z | - |
dc.date.available | 2022-07-07T13:32:46Z | - |
dc.date.issued | 2022 | - |
dc.date.submitted | 2022-07-07T11:43:12Z | - |
dc.identifier.citation | Advanced Energy Materials, 12 (31) (Art N° 2200641) | - |
dc.identifier.uri | http://hdl.handle.net/1942/37679 | - |
dc.description.abstract | The interplay between free charge carriers, charge transfer (CT) states and singlet excitons (S-1) determines the recombination pathway and the resulting open circuit voltage (V-OC) of organic solar cells. By combining a well-aggregated low bandgap polymer with different blend ratios of the fullerenes PCBM and ICBA, the energy of the CT state (E-CT) is varied by 130 meV while leaving the S-1 energy of the polymer (ES1\[{E_{{{\rm{S}}_1}}}\]) unaffected. It is found that the polymer exciton dominates the radiative properties of the blend when ECT\[{E_{{\rm{CT}}}}\] approaches ES1\[{E_{{{\rm{S}}_1}}}\], while the V-OC remains limited by the non-radiative decay of the CT state. It is concluded that an increasing strength of the exciton in the optical spectra of organic solar cells will generally decrease the non-radiative voltage loss because it lowers the radiative V-OC limit (V-OC,V-rad), but not because it is more emissive. The analysis further suggests that electronic coupling between the CT state and the S-1 will not improve the V-OC, but rather reduce the V-OC,V-rad. It is anticipated that only at very low CT state absorption combined with a fairly high CT radiative efficiency the solar cell benefit from the radiative properties of the singlet excitons. | - |
dc.description.sponsorship | This work has been funded by the German Science Foundation DFG) Project Nos. 256605806 and 460766640. Nanostructure X-ray characterization was supported by the US National Science Foundation Grant #1905790 and used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under Contract No. DE-AC02-05CH11231. The authors also thank Lorena Perdigon Toro and Manasi Pranav for their feedback on the manuscript. Open access funding enabled and organized by Projekt DEAL. | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.rights | 2022 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | - |
dc.subject.other | external quantum efficiency | - |
dc.subject.other | organic photovoltaics | - |
dc.subject.other | ternary blends | - |
dc.subject.other | voltage losses | - |
dc.title | On the Interplay between CT and Singlet Exciton Emission in Organic Solar Cells with Small Driving Force and Its Impact on Voltage Loss | - |
dc.type | Journal Contribution | - |
dc.identifier.issue | 31 | - |
dc.identifier.volume | 12 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Neher, D (corresponding author), Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany. | - |
dc.description.notes | neher@uni-potsdam.de | - |
local.publisher.place | POSTFACH 101161, 69451 WEINHEIM, GERMANY | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
local.bibliographicCitation.artnr | 2200641 | - |
dc.identifier.doi | 10.1002/aenm.202200641 | - |
dc.identifier.isi | WOS:000817784600001 | - |
local.provider.type | wosris | - |
local.description.affiliation | [Fritsch, Tobias; Kurpiers, Jona; Roland, Steffen; Tokmoldin, Nurlan; Shoaee, Safa; Neher, Dieter] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany. | - |
local.description.affiliation | [Fritsch, Tobias] Fed Inst Mat Res & Testing, Dept 8 5 MicroNDT, Unter Eichen 87, D-12205 Berlin, Germany. | - |
local.description.affiliation | [Ferron, Thomas; Collins, Brian A.] Washington State Univ, Dept Phys & Astron, 100 Dairy Rd, Pullman, WA 99164 USA. | - |
local.description.affiliation | [Janietz, Silvia] Fraunhofer Inst Appl Polymer Res, Polymers & Elect, Geiselbergstr 69, D-14476 Potsdam, Germany. | - |
local.description.affiliation | [Vandewal, Koen] Hasselt Univ, Inst Mat Res IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | - |
local.uhasselt.international | yes | - |
item.fullcitation | Fritsch, Tobias; Kurpiers, Jona; Roland, Steffen; Tokmoldin, Nurlan; Shoaee, Safa; Ferron, Thomas; Collins, Brian A.; Janietz, Silvia; VANDEWAL, Koen & Neher, Dieter (2022) On the Interplay between CT and Singlet Exciton Emission in Organic Solar Cells with Small Driving Force and Its Impact on Voltage Loss. In: Advanced Energy Materials, 12 (31) (Art N° 2200641). | - |
item.validation | ecoom 2023 | - |
item.contributor | Fritsch, Tobias | - |
item.contributor | Kurpiers, Jona | - |
item.contributor | Roland, Steffen | - |
item.contributor | Tokmoldin, Nurlan | - |
item.contributor | Shoaee, Safa | - |
item.contributor | Ferron, Thomas | - |
item.contributor | Collins, Brian A. | - |
item.contributor | Janietz, Silvia | - |
item.contributor | VANDEWAL, Koen | - |
item.contributor | Neher, Dieter | - |
item.fulltext | With Fulltext | - |
item.accessRights | Open Access | - |
crisitem.journal.issn | 1614-6832 | - |
crisitem.journal.eissn | 1614-6840 | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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On the Interplay between CT and Singlet Exciton Emission in Organic Solar Cells with Small Driving Force and Its Impact on Voltage Loss.pdf | Published version | 2.72 MB | Adobe PDF | View/Open |
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