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Record W4399247486 · doi:10.1038/s41377-024-01481-7

Ultrahigh-efficiency quantum dot light-emitting diodes

2024· article· en· W4399247486 on OpenAlex
Lian Duan

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.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueLight Science & Applications · 2024
Typearticle
Languageen
FieldMaterials Science
TopicQuantum Dots Synthesis And Properties
Canadian institutionsnot available
Fundersnot available
KeywordsQuantum dotOptoelectronicsLight-emitting diodeDiodeMaterials science

Abstract

fetched live from OpenAlex

The external quantum efficiencies (EQEs) of the state-of-the-art quantum dot light-emitting diodes (QD-LEDs) are limited by the out-coupling efficiency. Orienting the transition dipole moment (TDM), or in other words, making light emission directional, is a practically efficient approach to overcome this limitation. Nanoplates, nanorods, and dot-in-plate nanocrystals offer easily controllable TDM orientation; however, their low internal quantum efficiency (IQE) offset the gain in out-coupling, leading to no improvement in EQE. A joint team of researchers from the University of Science and Technology of China, Henan University and University of Toronto has developed isotropic-shaped QDs with directional light emission that does not compromise the IQE. These QDs feature a mixed crystallographic structure, i.e. they have both wurtzite and zinc blende phases in each single nanocrystal, which allow directional light emission at a single particle level. These QD also have strong internal dipole–dipole interaction that facilitates the alignment of light emission in ensemble films. Thanks to the enhanced photon out-coupling, the LED made from these QDs represents a peak EQE of 35.6%—far above the theoretical upper limit of devices using isotropic QD emitters.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesScience and technology studies, Scholarly communication, 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 score0.215
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.002
Science and technology studies0.0010.001
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.003

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 head0.018
GPT teacher head0.268
Teacher spread0.250 · 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