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InGaN Quantum Dots for Intermediate Band Solar Cells

2019· article· en· W3005249999 on OpenAlexaff
Luc Robichaud, Jacob J. Krich

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldPhysics and Astronomy
TopicGaN-based semiconductor devices and materials
Canadian institutionsUniversity of Ottawa
Fundersnot available
KeywordsQuantum dotSolar cellWurtzite crystal structureOptoelectronicsIndiumBand gapMultiple exciton generationPhysicsDetailed balanceMaterials scienceCondensed matter physicsOpticsQuantum mechanics

Abstract

fetched live from OpenAlex

We study the potential efficiency of a wurtzite InGaN/GaN quantum dot system as an intermediate band solar cell. We show that within the detailed balance formalism, efficiencies of quantum dot intermediate band solar cells are equivalent to a ratchet band system, which can be more efficient than a standard intermediate band solar cell. These detailed balance results provide targets for the ideal energy levels of the quantum dots. We use a k.p electronic structure model, including the effects of strain, to design the size and alloy fraction of dots to approach the optimal energy levels. Strain-driven piezoelectric fields tend to separate the electron and holes states inside the quantum dot, requiring small quantum dots in order to have significant optical absorptions. In this case of small dots, we find 1-sun optimal efficiencies up to 39% with a required indium fraction of 78%.

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 categoriesInsufficient 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 score0.043
Threshold uncertainty score0.998

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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 head0.011
GPT teacher head0.238
Teacher spread0.227 · 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

Citations1
Published2019
Admission routes1
Has abstractyes

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