Research Briefing |
Featured
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Article |
Upconversion electroluminescence in 2D semiconductors integrated with plasmonic tunnel junctions
Plasmonic tunnel junctions integrated with a monolayer semiconductor are found to emit photons with energies exceeding the input electrical potential. This peculiar phenomenon is ascribed to being triggered by inelastic electron tunnelling dipoles inducing optically forbidden transitions in the carrier injection electrode.
- Zhe Wang
- , Vijith Kalathingal
- & Goki Eda
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Article |
Minimizing heat generation in quantum dot light-emitting diodes by increasing quasi-Fermi-level splitting
Quantum dot LED brightness can be enhanced at low driving voltage using a monolayer of large quantum dots to reduce the packing number in the emitting layer and minimize heat generation.
- Yan Gao
- , Bo Li
- & Zuliang Du
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Article |
Exploiting the full advantages of colloidal perovskite nanocrystals for large-area efficient light-emitting diodes
A modified bar-coating method enables the realization of efficient large-area perovskite light-emitting diodes with high uniformity.
- Young-Hoon Kim
- , Jinwoo Park
- & Tae-Woo Lee
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Comment |
To nano or not to nano for bright halide perovskite emitters
The halide perovskite family has, arguably, become today’s most promising emerging materials sets for optoelectronic applications. Here, we discuss the underperformance to date of the colloidal nanocrystal forms of these materials when employed in electroluminescent lighting devices relative to their counterparts, in which the emitter layer is in the form of polycrystalline films. However, we highlight the bright future of halide perovskite colloidal nanocrystals in light-emission technologies such as LCD displays, quantum light sources and even alternative LED configurations, as well as key guidelines for their further development to get there.
- Javad Shamsi
- , Gabriele Rainò
- & Samuel D. Stranks
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Letter |
Bipolar-shell resurfacing for blue LEDs based on strongly confined perovskite quantum dots
A solution-based ligand-exchange strategy enables the realization of close-packed quantum dot solid films with near-unity photoluminescence quantum yield and high charge carrier mobility.
- Yitong Dong
- , Ya-Kun Wang
- & Edward H. Sargent
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Article |
High-efficiency colloidal quantum dot infrared light-emitting diodes via engineering at the supra-nanocrystalline level
PbS quantum dot ternary blends enable the realization of high-efficiency colloidal quantum dot infrared light-emitting diodes
- Santanu Pradhan
- , Francesco Di Stasio
- & Gerasimos Konstantatos
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Editorial |
No walking away
Leaving the European Union could be detrimental for science and innovation in the United Kingdom.
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Research Highlights |
Our choice from the recent literature
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Letter |
Bright light-emitting diodes based on organometal halide perovskite
Electroluminescence with relatively high radiance is observed from solution-processed diodes of organometal halide perovskites.
- Zhi-Kuang Tan
- , Reza Saberi Moghaddam
- & Richard H. Friend
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Letter |
Electrically tunable excitonic light-emitting diodes based on monolayer WSe2 p–n junctions
Bright and electrostatically tunable electroluminescence from monolayer WSe2 p–n junctions is reported.
- Jason S. Ross
- , Philip Klement
- & Xiaodong Xu
Inelastic electron tunnelling induces anomalous light emission
Nitrides in the spotlight