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Han-Youl Ryu

Han-Youl Ryu

D-Index & Metrics

Engineering and Technology

D-Index
40
Citations
6210
World Ranking
7344
National Ranking
195

Overview

Han-Youl Ryu is affiliated with Inha University in South Korea and has contributed extensively to the fields of Physics and Astronomy as well as Engineering. Their research output spans various subfields including Condensed Matter Physics, Atomic and Molecular Physics with Optics, Electrical and Electronic Engineering, Materials Chemistry, and Electronic, Optical and Magnetic Materials.

Their main research focus revolves around GaN-based semiconductor devices and materials, a topic extensively covered across 30 of their publications. Other significant topics include Semiconductor Quantum Structures and Devices, Ga2O3 and related materials, Photocathodes and Microchannel Plates, Semiconductor Lasers and Optical Devices, Color Science and Applications, and ZnO doping and properties.

Han-Youl Ryu has published numerous papers in various scientific journals. Selected recent publications include:

  • Light Extraction Efficiency of GaN-Based Micro-Scale Light-Emitting Diodes Investigated Using Finite-Difference Time-Domain Simulation, 2020, IEEE Photonics Journal
  • Temperature dependence of the Auger recombination coefficient in InGaN/GaN multiple-quantum-well light-emitting diodes, 2020, Optics Express
  • Evaluation of Crystalline Volume Fraction of Laser-Annealed Polysilicon Thin Films Using Raman Spectroscopy and Spectroscopic Ellipsometry, 2021, Micromachines
  • Investigation of the Optimum Mg Doping Concentration in p-Type-Doped Layers of InGaN Blue Laser Diode Structures, 2021, Crystals
  • Temperature Dependence of Electron Leakage Current in InGaN Blue Light-Emitting Diode Structures, 2022, Nanomaterials

The venues where they commonly publish include:

  • Crystals
  • Optics Express
  • Nanomaterials
  • Current Applied Physics
  • AIP Advances

Frequent collaborators in their research network consist of several scholars working in related fields. Notable coauthors include Chibuzo Onwukaeme, Bohae Lee, Jeongsang Pyo, Hyun Yeol Ryu, and Geunhwan Ryu.

Overall, Han-Youl Ryu's research contributes to advancing the understanding and development of semiconductor materials and devices, with particular emphasis on gallium nitride (GaN) based technologies and their optical and electronic properties.

Best Publications

  • Waveguides, resonators and their coupled elements in photonic crystal slabs.

    M. Notomi;A. Shinya;S. Mitsugi;E. Kuramochi

  • Rate equation analysis of efficiency droop in InGaN light-emitting diodes

    Han-Youl Ryu;Hyun-Sung Kim;Jong-In Shim

  • Investigation of Light Extraction Efficiency in AlGaN Deep-Ultraviolet Light-Emitting Diodes

    Han-Youl Ryu;Il-Gyun Choi;Hyo-Sik Choi;Jong-In Shim

  • Very low threshold photonic band edge lasers from free-standing triangular photonic crystal slabs

    Han-Youl Ryu;Soon-Hong Kwon;Yong-Jae Lee;Yong-Hee Lee

  • Semiconductor photoelectric element

    Ho-Sun Paek;Seidan Ri;Han-Youl Ryu;Tan Sakong

  • High-quality-factor and small-mode-volume hexapole modes in photonic-crystal-slab nanocavities

    Han-Youl Ryu;Masaya Notomi;Yong-Hee Lee

  • Characteristics of modified single-defect two-dimensional photonic crystal lasers

    Hong-Gyu Park;Jeong-Ki Hwang;Joon Huh;Han-Youl Ryu

  • Square-lattice photonic band-gap single-cell laser operating in the lowest-order whispering gallery mode

    Han Youl Ryu;Se Heon Kim;Hong Gyu Park;Jeong Ki Hwang

  • Room-temperature triangular-lattice two-dimensional photonic band gap lasers operating at 1.54 μm

    Jeong Ki Hwang;Han Youl Ryu;Dae Sung Song;Il Young Han

  • Nondegenerate monopole-mode two-dimensional photonic band gap laser

    Hong Gyu Park;Jeong Ki Hwang;Joon Huh;Han Youl Ryu

  • Two-dimensional photonic crystal hexagonal waveguide ring laser

    Se Heon Kim;Han Youl Ryu;Hong Gyu Park;Guk Hyun Kim

  • Photonic bandedge lasers in two-dimensional square-lattice photonic crystal slabs

    Soon-Hong Kwon;Han-Youl Ryu;Guk-Hyun Kim;Yong-Hee Lee

  • Continuous room-temperature operation of optically pumped two-dimensional photonic crystal lasers at 1.6 /spl mu/m

    J.K. Hwang;H.Y. Ryu;D.S. Song;I.Y. Han

  • Analysis of efficiency droop in nitride light-emitting diodes by the reduced effective volume of InGaN active material

    Han-Youl Ryu;Dong-Soo Shin;Jong-In Shim

  • Effect of current spreading on the efficiency droop of InGaN light-emitting diodes

    Han-Youl Ryu;Jong-In Shim

  • High quality-factor whispering-gallery mode in the photonic crystal hexagonal disk cavity.

    Han-Youl Ryu;Masaya Notomi;Guk-Hyun Kim;Yong-Hee Lee

  • Spontaneous emission rate of an electric dipole in a general microcavity

    Jeong-Ki Hwang;Han-Youl Ryu;Yong-Hee Lee

  • Two-dimensional photonic crystal semiconductor lasers: computational design, fabrication, and characterization

    Han-Youl Ryu;Hong-Gyu Park;Yong-Hee Lee

  • Measurement of junction temperature in GaN-based laser diodes using voltage-temperature characteristics

    Han-Youl Ryu;Kyoung-Ho Ha;Jung-Hye Chae;Ok-Hyun Nam

  • Characteristics of GaN-based laser diodes for post-DVD applications

    O. H. Nam;K. H. Ha;J. S. Kwak;S. N. Lee

Frequent Co-Authors

Masaya Notomi
Masaya Notomi NTT (Japan)
Han-Ki Kim
Han-Ki Kim Sungkyunkwan University
Akihiko Shinya
Akihiko Shinya NTT (Japan)
Kai-Ming Ho
Kai-Ming Ho Iowa State University
Joon Seop Kwak
Joon Seop Kwak Sunchon National University
Jong Kyu Kim
Jong Kyu Kim Pohang University of Science and Technology
Sang Ouk Kim
Sang Ouk Kim Korea Advanced Institute of Science and Technology
Miyoung Kim
Miyoung Kim Seoul National University
Wan In Lee
Wan In Lee Inha University

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