ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2024
Quantifying Efficiency Roll-Off Factors in Quantum-Dot Light-Emitting Diodes.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed.
- HNature communications · 2026Article
- A Standardized Platform for QLED Fabrication and Characterization.Chemistry of materials : a publication of the American Chemical Society · 2026Article
- Electron confinement-enhanced green InP-based quantum dots for active-matrix LEDs displays.Nature communications · 2026Article
- Degradation Mechanisms in Quantum-Dot Light-Emitting Diodes: A Perspective on Nondestructive Analysis.International journal of molecular sciences · 2025Review
- Quantifying Efficiency Roll-Off Factors in Quantum-Dot Light-Emitting Diodes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
The application of quantum-dot light-emitting diodes (QLEDs) is hindered by efficiency roll-off at high current densities. Factors contributing to this roll-off include Auger recombination, electric field-induced quenching, Joule heating, and electron leakage into the hole transport layer. However, a method to quantitatively attribute the contribution of each factor to roll-off has not yet been available, leaving the primary cause of roll-off unidentified. This work addresses this gap using electrically pumped transient absorption spectroscopy, which measures the accumulated electrons and electric field in quantum dots (QDs). This study also introduces a method to quantify electron leakage in QLEDs using this spectroscopic technique. Based on the spectroscopic experimental results, the contribution of each factor to roll-off is quantified. A green QLED with a peak external quantum efficiency (EQE) of 26.8% is studied as an example. The EQE declines to 20.5% at a current density of 354 mA cm
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.