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Related papers: Efficiency Models for GaN-based Light-Emitting Dio…

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Over the last decade, progress in wide bandgap, III-V materials systems based on gallium nitride (GaN) has been a major driver in the realization of high power and high frequency electronic devices. Since the highly conductive,…

In this work, we present a detailed photophysical analysis of recently-discovered optically stable, single photon emitters (SPEs) in Gallium Nitride (GaN). Temperature-resolved photoluminescence measurements reveal that the emission lines…

Low energy consumption nanolasers are crucial for advancing on-chip integrated optical interconnects and photonic integrated circuits. Monolayer transition metal dichalcogenides (TMDs) have emerged as an energy-efficient alternative to…

Optics · Physics 2025-07-15 Teresa López-Carrasco , Marcos H. D. Guimarães

Perovskite nanocrystal light-emitting diodes (LEDs) employing architecture comprising a ZnO nanoparticles electron-transport layer and a conjugated polymer hole-transport layer have been fabricated. The obtained LEDs demonstrate a maximum…

CMOS-compatible short- and mid-wave infrared emitters are highly coveted for the monolithic integration of silicon-based photonic and electronic integrated circuits to serve a myriad of applications in sensing and communications. In this…

GaN-nanorods grown on Si(111) substrates are found strain- and defect-free as characterized by micro Raman spectroscopy, secondary electron (SE) and cathode-luminescence (CL) imaging. The matrix supporting the nanorods bears the brunt of…

Materials Science · Physics 2007-05-23 H. W. Seo , Q. Y. Chen , M. N. Iliev , W. K. Chu , L. W. Tu , C. L. Hsiao , James K. Meen

Over the past few decades, thin-film optoelectronic devices have shown significant advancements. Light-emitting diodes (LEDs) based on organic materials, polymers, quantum dots, as well as metal halide perovskites have achieved remarkable…

Materials Science · Physics 2026-02-04 Sang-Hyun Chin

Efficiency droop, i.e., a decline in brightness of LEDs at high electrical currents, has limited the performance of all commercially available LEDs. Until now, it has limited the output power of sub-micron LEDs and lasers to nanowatt range.…

Applied Physics · Physics 2020-07-21 Babak Nikoobakht , Robin P. Hansen , Yuqin Zong , Amit Agrawal , Michael Shur , Jerry Tersoff

The use of a thin mixed layer consisting of an inert diluent material and a light emitting material between the hole-transport layer and electron-transport layer of organic light-emitting diodes leads to an increase in the external quantum…

Soft Condensed Matter · Physics 2011-07-15 S. H. Mohan , K. Garre , N. Bhandari , M. Cahay

We discuss the engineering of p-AlGaN cladding layers for achieving efficient tunnel-injected III-Nitride ultraviolet light emitting diodes (UV LEDs) in the UV-A spectral range. We show that capacitance-voltage measurements can be used to…

Gallium selenide (GaSe) is a 2D material with a thickness-dependent gap, strong non-linear optical coefficients and uncommon interband optical selection rules, making it interesting for optoelectronic and spintronic applications. In this…

Materials Science · Physics 2017-06-15 Alaric Bergeron , John Ibrahim , Richard Leonelli , Sébastien Francoeur

Gallium nitride (GaN) is a typical wide-bandgap semiconductor with a critical role in a wide range of electronic applications. Ballistic thermal transport at nanoscale hotspots will greatly reduce the performance of a device when its…

Mesoscale and Nanoscale Physics · Physics 2022-08-22 Dezhao Huang , Qiangsheng Sun , Zeyu Liu , Shen Xu , Ronggui Yang , Yanan Yue

The use of robust, inorganic charge-transport materials is always desired in quantum-dot light emitting diodes (QLEDs) because they are expected to allow higher stability and less cost than that of organic counterparts. Here we report an…

Applied Physics · Physics 2018-04-10 Wenyu Ji , Huaibin Shen , Han Zhang , Zhihui Kang , Hanzhuang Zhang

Defect centers in GaN emerge as bright sources of single-photons which recently have been demonstrated to optically interface a localized spin. However, the structure and composition of these defects as well as their efficient excitation…

Outstanding wide-bandgap semiconductor material such as gallium nitride (GaN) has been extensively utilized in power electronics, radiofrequency amplifiers, and harsh environment devices. Due to its quantum confinement effect in enabling…

Applied Physics · Physics 2022-04-15 Qian Li , Bang-Deng Du , Jian-Ye Gao , Bao-Yu Xing , Dian-Kai Wang , Ji-Fei Ye , Jing Liu

Gallium selenide (GaSe) is a novel two-dimensional material, which belongs to the layered III-VIA semiconductors family and attracted interest recently as it displays single-photon emitters at room temperature and strong optical…

Femtosecond laser-writing offers distinct capabilities for fabrication, including three-dimensional, multi-material, and sub-diffraction-limited patterning. In particular, demonstrations of laser-written quantum emitters and photonic…

Quantum dots (QDs) based on III-nitride semiconductors are promising for single photon emission at non-cryogenic temperatures due to their large exciton binding energies. Here, we demonstrate GaN QD single photon emitters operating at 300 K…

Mesoscale and Nanoscale Physics · Physics 2020-01-28 Sebastian Tamariz , Gordon Callsen , Johann Stachurski , Kanako Shojiki , Raphaël Butté , Nicolas Grandjean

Localized surface plasmons (LSPs) have played a significant role in improving the light emission efficiency of light emitting diodes (LEDs). In this report, polygonal nanoholes have been fabricated in the p-GaN layer of InGaN-based LEDs by…

Near-Infrared (NIR) light emitting metal halides are emerging as a new generation of optical materials owing to their appealing features, which include low-cost synthesis, solution processability and adjustable optical properties. NIR…

Materials Science · Physics 2025-12-09 Ying Liu , Francesco Di Stasio , Chenghao Bi , Jibin Zhang , Zhiguo Xia , Zhifeng Shi , Liberato Manna
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