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Record W4296791315 · doi:10.26434/chemrxiv-2022-5v86b

Hybrid Inorganic Perovskite-Photonic Crystal Beads with High Quantum Yields of Photoluminescence

2022· preprint· en· W4296791315 on OpenAlexafffund
Victoria Lapointe, Sollavi Chengadu, Cristina Pomilio, Meera Ganesh, Marek B. Majewski

Bibliographic record

VenueChemRxiv · 2022
Typepreprint
Languageen
FieldPhysics and Astronomy
TopicPhotonic Crystals and Applications
Canadian institutionsConcordia University
FundersFonds de recherche du Québec – Nature et technologiesNatural Sciences and Engineering Research Council of Canada
KeywordsPhotoluminescenceMaterials sciencePhotonic crystalMicrobead (research)NanocrystalQuantum yieldOptoelectronicsPerovskite (structure)PhotonicsBand gapQuantum dotNanotechnologyChemical engineeringOpticsFluorescenceChemistry

Abstract

fetched live from OpenAlex

The integration of photonic materials with semiconductor nanocrystals by correlating the photonic stopband and bandgap energy is expected to afford hybrid materials with enhanced optoelectronic properties. Here, we report two photonic crystal–perovskite nanocrystal microbead hybrids synthesized through simple vacuum drying techniques. Photonic polystyrene microbeads combined with metal halide perovskite nanocrystals yield hybrids with expected photoluminescence maxima when excited above the bandgap energy but unexpectedly high photoluminescence quantum yields (as high as 198 %). These microbead hybrid systems also demonstrated better resistance to degradation in water over 30 days of immersion as compared to their colloidal counterparts.

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.

How this classification was reachedexpand

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
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 score0.082
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.001
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0050.000

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 head0.010
GPT teacher head0.231
Teacher spread0.220 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2022
Admission routes2
Has abstractyes

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