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Record W2035428101 · doi:10.1080/1058726021000045234

BOUND EXCITON LUMINESCENCE OF THE INTERCALATED TUNGSTEN DICHALCOGENIDE LAYER COMPOUNDS

2002· article· en· W2035428101 on OpenAlex
L. Kulyuk, E. BUCHER, Luc Charron, E. Fortin, A. Nateprov, O. Schenker

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueMolecular crystals and liquid crystals science and technology. Section B, Nonlinear optics/Molecular crystals and liquid crystals scienceand technology. Section B, Nonlinear optics/Nonlinear optics · 2002
Typearticle
Languageen
FieldEngineering
TopicChalcogenide Semiconductor Thin Films
Canadian institutionsUniversity of Ottawa
Fundersnot available
KeywordsExcitonPhotoluminescenceLuminescenceBand gapTungstenvan der Waals forceHalogenSemiconductorNon-radiative recombinationIntercalation (chemistry)RecombinationChemistrySpontaneous emissionMaterials scienceChemical physicsAtomic physicsCondensed matter physicsMoleculeOptoelectronicsInorganic chemistryPhysicsSemiconductor materialsOptics

Abstract

fetched live from OpenAlex

The radiative recombination in the layered transition metal dichalcogenide compounds 2H-WS 2 and 2H-WSe 2 has been investigated. It is shown that the strong photoluminescence (PL) of these indirect band gap semiconductors is caused by recombination of excitons bound to neutral centers formed due to the intercalation of halogen molecules Br 2 and I 2 in the well defined sites of the van der Waals gap. These centers, located at energy E T , 0.1 v eV below the conduction band, display the same properties as the isoelectronic traps in GaP, providing the efficient radiative recombination.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Research integrity
Consensus categoriesMeta-epidemiology (narrow), Science and technology studies, Research integrity
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.242
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.001
Meta-epidemiology (narrow)0.0020.002
Meta-epidemiology (broad)0.0020.000
Bibliometrics0.0030.008
Science and technology studies0.0020.009
Scholarly communication0.0010.001
Open science0.0020.002
Research integrity0.0020.003
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.012
GPT teacher head0.220
Teacher spread0.208 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it