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http://hdl.handle.net/1942/35780
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DC Field | Value | Language |
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dc.contributor.author | LOPES, Tomas | - |
dc.contributor.author | DE WILD, Jessica | - |
dc.contributor.author | Rocha, C | - |
dc.contributor.author | Violas, A | - |
dc.contributor.author | Cunha, JMV | - |
dc.contributor.author | Teixeira, JP | - |
dc.contributor.author | Curado, MA | - |
dc.contributor.author | Oliveira, AJN | - |
dc.contributor.author | Borme, J | - |
dc.contributor.author | BIRANT, Gizem | - |
dc.contributor.author | BRAMMERTZ, Guy | - |
dc.contributor.author | Fernandes, PA | - |
dc.contributor.author | VERMANG, Bart | - |
dc.contributor.author | Salome, PMP | - |
dc.date.accessioned | 2021-11-08T10:25:36Z | - |
dc.date.available | 2021-11-08T10:25:36Z | - |
dc.date.issued | 2021 | - |
dc.date.submitted | 2021-09-14T09:21:26Z | - |
dc.identifier.citation | ACS applied materials & interfaces (Print), 13 (23) , p. 27713 -27725 | - |
dc.identifier.uri | http://hdl.handle.net/1942/35780 | - |
dc.description.abstract | Several optoelectronic issues, such as poor optical absorption and recombination, limit the power conversion efficiency of ultrathin Cu(In,Ga)Se-2 (CIGS) solar cells. To mitigate recombination losses, two combined strategies were implemented: a potassium fluoride (KF) post-deposition treatment (PDT) and a rear interface passivation strategy based on an aluminum oxide (Al2O3) point contact structure. The simultaneous implementation of both strategies is reported for the first time on ultrathin CIGS devices. Electrical measurements and 1D simulations demonstrate that in specific conditions, devices with only KF-PDT may outperform rear interface passivation based devices. By combining KF-PDT and rear interface passivation, an enhancement in an open-circuit voltage of 178 mV is reached over devices that have a rear passivation only, and of 85 mV over devices with only a KF-PDT process. Time-Resolved Photoluminescence measurements showed the beneficial effects of combining KF-PDT and the rear interface passivation at decreasing recombination losses in the studied devices, enhancing charge carrier lifetime. X-ray photoelectron spectroscopy measurements indicate the presence of an In and Se-rich layer that we linked to be a KInSe2 layer. Our results suggest that when bulk and front interface recombination values are very high, they dominate, and individual passivation strategies work poorly. Hence, this work shows that for ultrathin devices, passivation mitigation strategies need to be implemented in tandem. | - |
dc.description.sponsorship | Funding Fundaca̧ o para a Cie ̃ ncia e Tecnologia through grants IF/ ̂00133/2015, PD/BD/142780/2018, and SFRH/BD/146776/2019 and projects PDTC/CTM-CTM/28075/2017, PTDC/FISMAC/29696/2017, and UIDB/04730/2020 is acknowledged. European Union’s Horizon 2020 through grant nos. 720887 and 715027 and the Special Research Fund (BOF) of Hasselt University are also acknowledged. ACKNOWLEDGMENTS Fundaca̧ o para a Cie ̃ ncia e a Tecnologia (FCT) is acknowledged through the project IF/00133/2015, PD/BD/142780/2018, and SFRH/BD/146776/2019. The authors want to acknowledge the European Union’s Horizon 2020 research and innovation program under the agreement nos. 720887 (ARCIGS-M project) and 715027. The Special Research Fund (BOF) of Hasselt University, the FCT through the project NovaCell (PDTC/CTM-CTM/28075/2017), and InovSolarCells (PTDC/FISMAC/29696/2017) co-funded by FCT and the ERD through COMPETE2020 is also acknowledged. P. A. Fernandes would like to acknowledge FCT for the support of the project FCT UIDB/04730/2020. | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.rights | 2021 American Chemical Society | - |
dc.subject.other | ultrathin CIGS | - |
dc.subject.other | KF-PDT passivation | - |
dc.subject.other | Al2O3 | - |
dc.subject.other | recombination mechanisms | - |
dc.subject.other | rear interface passivation | - |
dc.title | On the Importance of Joint Mitigation Strategies for Front, Bulk, and Rear Recombination in Ultrathin Cu(In,Ga)Se-2 Solar Cells | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 27725 | - |
dc.identifier.issue | 23 | - |
dc.identifier.spage | 27713 | - |
dc.identifier.volume | 13 | - |
local.bibliographicCitation.jcat | A1 | - |
local.publisher.place | 1155 16TH ST, NW, WASHINGTON, DC 20036 USA | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
local.type.programme | H2020 | - |
local.relation.h2020 | 720887 | - |
dc.identifier.doi | 10.1021/acsami.1c07943 | - |
dc.identifier.isi | 000664289800103 | - |
local.provider.type | Web of Science | - |
local.uhasselt.international | yes | - |
item.fullcitation | LOPES, Tomas; DE WILD, Jessica; Rocha, C; Violas, A; Cunha, JMV; Teixeira, JP; Curado, MA; Oliveira, AJN; Borme, J; BIRANT, Gizem; BRAMMERTZ, Guy; Fernandes, PA; VERMANG, Bart & Salome, PMP (2021) On the Importance of Joint Mitigation Strategies for Front, Bulk, and Rear Recombination in Ultrathin Cu(In,Ga)Se-2 Solar Cells. In: ACS applied materials & interfaces (Print), 13 (23) , p. 27713 -27725. | - |
item.accessRights | Open Access | - |
item.fulltext | With Fulltext | - |
item.contributor | LOPES, Tomas | - |
item.contributor | DE WILD, Jessica | - |
item.contributor | Rocha, C | - |
item.contributor | Violas, A | - |
item.contributor | Cunha, JMV | - |
item.contributor | Teixeira, JP | - |
item.contributor | Curado, MA | - |
item.contributor | Oliveira, AJN | - |
item.contributor | Borme, J | - |
item.contributor | BIRANT, Gizem | - |
item.contributor | BRAMMERTZ, Guy | - |
item.contributor | Fernandes, PA | - |
item.contributor | VERMANG, Bart | - |
item.contributor | Salome, PMP | - |
item.validation | ecoom 2022 | - |
crisitem.journal.issn | 1944-8244 | - |
crisitem.journal.eissn | 1944-8252 | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2020-22-10_PaperKF_T_Lopes.pdf | Peer-reviewed author version | 1.01 MB | Adobe PDF | View/Open |
acsami.1c07943.pdf Restricted Access | Published version | 4.32 MB | Adobe PDF | View/Open Request a copy |
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