Dr. Cheng Liu Profile

Dr. Cheng Liu

Researach Associate Post-Doc

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Publications (10)

Proceedings Article | 5 March 2021 Presentation + Paper

InGaN-delta-InN quantum wells on InGaN substrates for high-efficiency red emission

Bryan Melanson, Cheng Liu, Jing Zhang

Proceedings Volume 11706, 117060E (2021) https://doi.org/10.1117/12.2583125

KEYWORDS: Indium gallium nitride, Quantum wells, Light emitting diodes, RGB color model, Quantum efficiency, LED displays, Indium nitride, External quantum efficiency, Diodes, Aluminium gallium indium phosphide

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Proceedings Article | 5 March 2021 Presentation + Paper

Light extraction analysis of AlGaN nanowires with inverse taper for DUV LEDs

Bryan Melanson, Cheng Liu, Matthew Hartensveld, Jing Zhang

Proceedings Volume 11706, 117060I (2021) https://doi.org/10.1117/12.2583116

KEYWORDS: Nanowires, Light emitting diodes, Deep ultraviolet, Finite-difference time-domain method, External quantum efficiency, Etching, Wet etching, Quantum efficiency, Magnetism, Crystals

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Proceedings Article | 16 February 2020 Paper

Enhancement of light extraction efficiency of 280-nm UV LEDs using SiO2 microsphere and microlens arrays

Bryan Melanson, Cheng Liu, Jing Zhang

Proceedings Volume 11280, 1128018 (2020) https://doi.org/10.1117/12.2546766

KEYWORDS: Microlens, Sapphire, Ultraviolet light emitting diodes, Microlens array, Light emitting diodes, Electroluminescence, External quantum efficiency, Silica, Interfaces, Finite-difference time-domain method

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Proceedings Article | 1 March 2019 Presentation + Paper

Analysis of AlGaN substrate for high-efficiency 240-260nm deep-UV lasers

Cheng Liu, Jing Zhang

Proceedings Volume 10939, 109390F (2019) https://doi.org/10.1117/12.2510509

KEYWORDS: Quantum wells, Aluminum, Deep ultraviolet, Aluminum nitride, Transition metals, Ultraviolet radiation, Optical properties, Polarization, Optical components, Physics

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Proceedings Article | 1 March 2019 Presentation + Paper

Analysis on light extraction property of AlGaN-based flip-chip ultraviolet light-emitting diodes by the use of self-assembled SiO2 microsphere array

Cheng Liu, Bryan Melanson, Yu Kee Ooi, Matthew Hartensveld, Jing Zhang

Proceedings Volume 10918, 109180Q (2019) https://doi.org/10.1117/12.2510488

KEYWORDS: Optical spheres, Ultraviolet light emitting diodes, Sapphire, Electroluminescence, Light emitting diodes, Finite-difference time-domain method, Aluminum, Photons, Polarization, Gallium

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Proceedings Article | 23 February 2018 Presentation + Paper

Demonstration of AlGaN-delta-GaN QW by plasma-assisted molecular beam epitaxy for 260-nm ultraviolet light emitting diodes

Cheng Liu, Kevin Lee, S. Islam, Huili Xing, Debdeep Jena, Jing Zhang

Proceedings Volume 10532, 105320W (2018) https://doi.org/10.1117/12.2290366

KEYWORDS: Quantum wells, Aluminum, Light emitting diodes, Gallium nitride, Aluminum nitride, Ultraviolet light emitting diodes, Deep ultraviolet, Ultraviolet radiation, Heterojunctions, Molecular beam epitaxy

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Proceedings Article | 23 February 2018 Presentation + Paper

Effect of quantum-well thickness on the optical polarization of AlGaN-based ultraviolet light-emitting diodes

Cheng Liu, Jing Zhang

Proceedings Volume 10526, 105261D (2018) https://doi.org/10.1117/12.2290341

KEYWORDS: Quantum wells, Polarization, Aluminum, Gallium, Aluminum nitride, Switching, Ultraviolet light emitting diodes, Light emitting diodes, Crystals, Gallium nitride

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Proceedings Article | 20 February 2017 Presentation + Paper

Integration of 3D printed lens with InGaN light-emitting diodes with enhanced light extraction efficiency

Yu Kee Ooi, Christopher Ugras, Cheng Liu, Matthew Hartensveld, Shaunak Gandhi, Denis Cormier, Jing Zhang

Proceedings Volume 10115, 1011508 (2017) https://doi.org/10.1117/12.2252734

KEYWORDS: Finite-difference time-domain method, Lens design, Photopolymers, Light emitting diodes, 3D printing, Indium gallium nitride, Refractive index, Optoelectronics, 3D metrology, Blue light emitting diodes, Gallium nitride, Electroluminescence, Optical testing

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Proceedings Article | 16 February 2017 Presentation + Paper

Dominant transverse-electric polarized emission from 298 nm MBE-grown AlN-delta-GaN quantum well ultraviolet light-emitting diodes

Cheng Liu, Yu Kee Ooi, S. M. Islam, Huili Grace Xing, Debdeep Jena, Jing Zhang

Proceedings Volume 10104, 101041R (2017) https://doi.org/10.1117/12.2252487

KEYWORDS: Quantum wells, Light emitting diodes, Ultraviolet radiation, Physics, Ultraviolet light emitting diodes, Electroluminescence, UV optics, Gallium, Aluminum, Aluminum nitride, Polarization

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Proceedings Article | 7 March 2016 Paper

Large TE polarized optical gain from AlInN-delta-GaN quantum well for ultraviolet lasers

Cheng Liu, Yu Kee Ooi, Jing Zhang

Proceedings Volume 9767, 97670F (2016) https://doi.org/10.1117/12.2212923

KEYWORDS: Quantum wells, Ultraviolet radiation, Nanostructures, Free space optics, UV optics, Gallium nitride, Laser applications, Crystals, Laser crystals, Active optics, Electrons, Solids, Aluminum nitride

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Showing 5 of 10 publications

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