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http://hdl.handle.net/1942/32943
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DC Field | Value | Language |
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dc.contributor.author | DE WILD, Jessica | - |
dc.contributor.author | BULDU KOHL, Dilara | - |
dc.contributor.author | KOHL, Thierry | - |
dc.contributor.author | BIRANT, Gizem | - |
dc.contributor.author | BRAMMERTZ, Guy | - |
dc.contributor.author | MEURIS, Marc | - |
dc.contributor.author | POORTMANS, Jef | - |
dc.contributor.author | VERMANG, Bart | - |
dc.date.accessioned | 2020-12-15T14:24:57Z | - |
dc.date.available | 2020-12-15T14:24:57Z | - |
dc.date.issued | 2020 | - |
dc.date.submitted | 2020-12-15T14:15:29Z | - |
dc.identifier.citation | JOURNAL OF APPLIED PHYSICS, 128 (16) (Art N° 163102) | - |
dc.identifier.uri | http://hdl.handle.net/1942/32943 | - |
dc.description.abstract | Ultrathin single- and three-stage Cu(In,Ga)Se-2 absorber layers were analyzed with room temperature photoluminescence (PL) spectra. An anomalous blueshift was observed upon increasing carrier injection for both samples. This blueshift was attributed to the presence of bandgap fluctuations that are of the same order as the minority carrier diffusion length. From time resolved measurements, a diffusion length of a few 100nms was deduced. The single-stage spectrum consists of two peaks, and the sample was, therefore, also analyzed by hyperspectral imaging, providing lateral PL and reflectance data with 1 mu m resolution. Marginal variations were observed in the PL yield and spectra. This homogeneity could again be attributed to an intermediate scale of the bandgap fluctuation with an upper limit of 1 mu m for the scale of the lateral bandgap fluctuations. The two peaks in the PL spectra of the single-stage sample could be attributed to interference, and correction methods were applied. The bandgap fluctuations were extracted for the three-stage and single-stage sample and were 45meV and 72 +/- 3meV, respectively. It is suggested that this difference is attributed to the smaller grains and larger amount of grain boundaries in the single-stage sample. | - |
dc.description.sponsorship | This work received funding from the European Union's H2020 Research and Innovation Program under Grant Agreement No. 715027. We acknowledge Photon etc. and Professor Delphine Bouilly's research group from IRIC for the hyperspectral measurements and Erik Spaans for the python program. | - |
dc.language.iso | en | - |
dc.publisher | AMER INST PHYSICS | - |
dc.title | Intermediate scale bandgap fluctuations in ultrathin Cu(In,Ga)Se2 absorber layers | - |
dc.type | Journal Contribution | - |
dc.identifier.issue | 16 | - |
dc.identifier.volume | 128 | - |
local.format.pages | 10 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | de Wild, J (corresponding author), Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.; de Wild, J (corresponding author), IMEC, IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.; de Wild, J (corresponding author), EnergyVile 2, Thor Pk 8320, B-3500 Genk, Belgium. | - |
dc.description.notes | Jessica.deWild@imec.be | - |
local.publisher.place | 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA | - |
dc.relation.references | de Wild, J (corresponding author), Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium ; IMEC, IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium ; EnergyVile 2, Thor Pk 8320, B-3500 Genk, Belgium. Jessica.deWild@imec.be | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
local.bibliographicCitation.artnr | 163102 | - |
local.type.programme | H2020 | - |
local.relation.h2020 | 715027 | - |
dc.identifier.doi | 10.1063/5.0024840 | - |
dc.identifier.isi | WOS:000586746900001 | - |
dc.contributor.orcid | Vermang, Bart/0000-0003-2669-2087; Poortmans, Jef/0000-0003-2077-2545; | - |
dc.contributor.orcid | Meuris, Marc/0000-0002-9580-6810; Birant, Gizem/0000-0003-0496-8150 | - |
local.provider.type | wosris | - |
local.uhasselt.uhpub | yes | - |
local.description.affiliation | [de Wild, J.; Buldu, D. G.; Kohl, T.; Birant, G.; Brammertz, G.; Meuris, M.; Poortmans, J.; Vermang, B.] Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | - |
local.description.affiliation | [de Wild, J.; Buldu, D. G.; Kohl, T.; Birant, G.; Brammertz, G.; Meuris, M.; Vermang, B.] IMEC, IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | - |
local.description.affiliation | [de Wild, J.; Buldu, D. G.; Kohl, T.; Birant, G.; Brammertz, G.; Meuris, M.; Poortmans, J.; Vermang, B.] EnergyVile 2, Thor Pk 8320, B-3500 Genk, Belgium. | - |
local.description.affiliation | [Poortmans, J.] IMEC, Kapeldreef 75, B-3001 Leuven, Belgium. | - |
local.description.affiliation | [Poortmans, J.] Katholieke Univ Leuven, Dept Elect Engn, Kasteelpk Arenberg 10, B-3001 Heverlee, Belgium. | - |
local.uhasselt.international | no | - |
item.validation | ecoom 2021 | - |
item.accessRights | Open Access | - |
item.fullcitation | DE WILD, Jessica; BULDU KOHL, Dilara; KOHL, Thierry; BIRANT, Gizem; BRAMMERTZ, Guy; MEURIS, Marc; POORTMANS, Jef & VERMANG, Bart (2020) Intermediate scale bandgap fluctuations in ultrathin Cu(In,Ga)Se2 absorber layers. In: JOURNAL OF APPLIED PHYSICS, 128 (16) (Art N° 163102). | - |
item.fulltext | With Fulltext | - |
item.contributor | DE WILD, Jessica | - |
item.contributor | BULDU KOHL, Dilara | - |
item.contributor | KOHL, Thierry | - |
item.contributor | BIRANT, Gizem | - |
item.contributor | BRAMMERTZ, Guy | - |
item.contributor | MEURIS, Marc | - |
item.contributor | POORTMANS, Jef | - |
item.contributor | VERMANG, Bart | - |
crisitem.journal.issn | 0021-8979 | - |
crisitem.journal.eissn | 1089-7550 | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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5.0024840.pdf Restricted Access | Published version | 4.15 MB | Adobe PDF | View/Open Request a copy |
JdeWild_201010_JoAP.pdf | Peer-reviewed author version | 1.01 MB | Adobe PDF | View/Open |
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