Works matching AU Ryu, Han-Youl

Results: 17

Design of GaN-Based Laser Diode Structures with Nonuniform Doping Distribution in a p-AlGaN Cladding Layer for High-Efficiency Operation.

Published in:

Crystals (2073-4352), 2025, v. 15, n. 3, p. 259, doi. 10.3390/cryst15030259

By:

Onwukaeme, Chibuzo;
Ryu, Han-Youl

Publication type:

Article

Investigation into the Effects of Cross-Sectional Shape and Size on the Light-Extraction Efficiency of GaN-Based Blue Nanorod Light-Emitting Diode Structures.

Published in:

Crystals (2073-4352), 2024, v. 14, n. 3, p. 241, doi. 10.3390/cryst14030241

By:

Lee, Bohae;
Ryu, Han-Youl

Publication type:

Article

Investigation of the Optimum Mg Doping Concentration in p-Type-Doped Layers of InGaN Blue Laser Diode Structures.

Published in:

Crystals (2073-4352), 2021, v. 11, n. 11, p. 1335, doi. 10.3390/cryst11111335

By:

Onwukaeme, Chibuzo;
Ryu, Han-Youl

Publication type:

Article

Evaluation of Light Extraction Efficiency of GaN-Based Nanorod Light-Emitting Diodes by Averaging over Source Positions and Polarizations.

Published in:

Crystals (2073-4352), 2018, v. 8, n. 1, p. 27, doi. 10.3390/cryst8010027

By:

Ryu, Han-Youl

Publication type:

Article

Efficiency Droop and Effective Active Volume in GaN-Based Light-Emitting Diodes Grown on Sapphire and Silicon Substrates.

Published in:

Applied Sciences (2076-3417), 2019, v. 9, n. 19, p. 4160, doi. 10.3390/app9194160

By:

Ryu, Han-Youl;
Ryu, Geun-Hwan;
Onwukaeme, Chibuzo

Publication type:

Article

Investigation into the temperature dependence of electron leakage in GaN-based blue laser diode structures by numerical simulation.

Published in:

Optical & Quantum Electronics, 2023, v. 55, n. 2, p. 1, doi. 10.1007/s11082-022-04440-x

By:

Lee, Bohae;
Ryu, Han-Youl

Publication type:

Article

Accurate determination of junction temperature in a GaN-based blue light-emitting diode using nonlinear voltage-temperature relation.

Published in:

Optical & Quantum Electronics, 2021, v. 53, n. 9, p. 1, doi. 10.1007/s11082-021-03182-6

By:

Onwukaeme, Chibuzo;
Choi, Won-Jin;
Ryu, Han-Youl

Publication type:

Article

Negative characteristic temperature of GaN-based blue laser diode investigated by numerical simulation.

Published in:

Optical & Quantum Electronics, 2017, v. 49, n. 1, p. 1, doi. 10.1007/s11082-016-0861-y

By:

Ryu, Han-Youl

Publication type:

Article

Investigation of the Purcell effect in GaN-based vertical LED structures using FDTD simulation.

Published in:

Optical & Quantum Electronics, 2016, v. 48, n. 1, p. 1, doi. 10.1007/s11082-015-0276-1

By:

Ryu, Han-Youl

Publication type:

Article

Numerical study on the wavelength-dependence of light extraction efficiency in AlGaN-based ultraviolet light-emitting diodes.

Published in:

Optical & Quantum Electronics, 2014, v. 46, n. 10, p. 1329, doi. 10.1007/s11082-014-9877-3

By:

Ryu, Han-Youl

Publication type:

Article

Investigation into the Anomalous Temperature Characteristics of InGaN Double Quantum Well Blue Laser Diodes Using Numerical Simulation.

Published in:

Nanoscale Research Letters, 2017, v. 12, n. 1, p. 1, doi. 10.1186/s11671-017-2141-6

By:

Ryu, Han-Youl

Publication type:

Article

High Detectivity Dual‐Band Infrared Photodetectors with Dislocation‐Assisted Photoconductive Gain via Hetero‐Epitaxial Growth.

Published in:

Advanced Functional Materials, 2025, v. 35, n. 22, p. 1, doi. 10.1002/adfm.202419329

By:

Woo, Seungwan;
Yeon, Eungbeom;
Ryu, Han‐Youl;
Han, Jae‐Hoon;
Jang, Ho Won;
Jung, Daehwan;
Choi, Won Jun

Publication type:

Article

Temperature Dependence of Electron Leakage Current in InGaN Blue Light-Emitting Diode Structures.

Published in:

Nanomaterials (2079-4991), 2022, v. 12, n. 14, p. N.PAG, doi. 10.3390/nano12142405

By:

Onwukaeme, Chibuzo;
Lee, Bohae;
Ryu, Han-Youl

Publication type:

Article

Nanophotonic route to control electron behaviors in 2D materials.

Published in:

Nanophotonics (21928606), 2024, v. 13, n. 16, p. 2865, doi. 10.1515/nanoph-2024-0074

By:

Kang, DongJun;
Onwukaeme, Chibuzo;
Park, KiJeong;
Jeon, KyeongPyo;
Ryu, Han-Youl;
Yoo, SeokJae

Publication type:

Article

Evaluation of Crystalline Volume Fraction of Laser-Annealed Polysilicon Thin Films Using Raman Spectroscopy and Spectroscopic Ellipsometry.

Published in:

Micromachines, 2021, v. 12, n. 8, p. 999, doi. 10.3390/mi12080999

By:

Pyo, Jeongsang;
Lee, Bohae;
Ryu, Han-Youl

Publication type:

Article

Large enhancement of light extraction efficiency in AlGaN-based nanorod ultraviolet light-emitting diode structures.

Published in:

Nanoscale Research Letters, 2014, v. 9, n. 1, p. 1, doi. 10.1186/1556-276X-9-58

By:

Ryu, Han-Youl

Publication type:

Article

Optimum Design of InGaN Blue Laser Diodes with Indium-Tin-Oxide and Dielectric Cladding Layers.

Published in:

Nanomaterials (2079-4991), 2024, v. 14, n. 17, p. 1409, doi. 10.3390/nano14171409

By:

Onwukaeme, Chibuzo;
Ryu, Han-Youl

Publication type:

Article