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Martin Velazquez-Rizo
Martin Velazquez-Rizo
Verificeret mail på kit.edu
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633-nm InGaN-based red LEDs grown on thick underlying GaN layers with reduced in-plane residual stress
D Iida, Z Zhuang, P Kirilenko, M Velazquez-Rizo, MA Najmi, K Ohkawa
Applied Physics Letters 116 (16), 2020
1202020
Demonstration of low forward voltage InGaN-based red LEDs
D Iida, Z Zhuang, P Kirilenko, M Velazquez-Rizo, K Ohkawa
Applied Physics Express 13 (3), 031001, 2020
712020
Optimal ITO transparent conductive layers for InGaN-based amber/red light-emitting diodes
Z Zhuang, D Iida, P Kirilenko, M Velazquez-Rizo, K Ohkawa
Optics Express 28 (8), 12311-12321, 2020
382020
606-nm InGaN amber micro-light-emitting diodes with an on-wafer external quantum efficiency of 0.56%
Z Zhuang, D Iida, M Velazquez-Rizo, K Ohkawa
IEEE Electron Device Letters 42 (7), 1029-1032, 2021
352021
630-nm red InGaN micro-light-emitting diodes (<20  μm × 20  μm) exceeding 1  mW/mm2 for full-color micro-displays
Z Zhuang, D Iida, M Velazquez-Rizo, K Ohkawa
Photonics Research 9 (9), 1796-1802, 2021
342021
Demonstration of 621-nm-wavelength InGaN-based single-quantum-well LEDs with an external quantum efficiency of 4.3% at 10.1 A/cm2
D Iida, P Kirilenko, M Velazquez-Rizo, Z Zhuang, MA Najmi, K Ohkawa
AIP Advances 12 (6), 2022
242022
Photoelectrochemical hydrogen generation using graded In-content InGaN photoelectrode structures
K Ohkawa, Y Uetake, M Velazquez-Rizo, D Iida
Nano Energy 59, 569-573, 2019
212019
High-color-rendering-index phosphor-free InGaN-based white light-emitting diodes by carrier injection enhancement via V-pits
D Iida, Z Zhuang, P Kirilenko, M Velazquez-Rizo, K Ohkawa
Applied Physics Letters 117 (17), 2020
182020
Microstructural analysis of N-polar InGaN directly grown on a ScAlMgO4 (0001) substrate
M Velazquez-Rizo, MA Najmi, D Iida, P Kirilenko, K Ohkawa
Applied Physics Express 15 (6), 065501, 2022
162022
Ultra-small InGaN green micro-light-emitting diodes fabricated by selective passivation of p-GaN
Z Zhuang, D Iida, M Velazquez-Rizo, K Ohkawa
Optics Letters 46 (20), 5092-5095, 2021
132021
Investigation of a separated short-wavelength peak in InGaN red light-emitting diodes
P Kirilenko, Z Zhuang, D Iida, M Velazquez-Rizo, K Ohkawa
Crystals 11 (9), 1123, 2021
92021
Photoelectrochemical and crystalline properties of a GaN photoelectrode loaded with α-Fe2O3 as cocatalyst
M Velazquez-Rizo, D Iida, K Ohkawa
Scientific reports 10 (1), 12586, 2020
92020
InGaN-based RGB micro-LED arrays
K Ohkawa, Z Zhuang, D Iida, M Velazquez-Rizo
Light-Emitting Devices, Materials, and Applications XXVI, PC1202202, 2022
42022
High crystallinity N-polar InGaN layers grown on cleaved ScAlMgO4 substrates
P Kirilenko, MA Najmi, B Ma, A Shushanian, M Velazquez-Rizo, D Iida, ...
AIP Advances 13 (4), 2023
32023
Photoelectrochemical H2 generation from water using a CoOx/GaN photoelectrode
M Velazquez-Rizo, D Iida, K Ohkawa
Japanese Journal of Applied Physics 58 (SC), SCCC23, 2019
32019
Low-temperature direct electrochemical splitting of H2S
M Velazquez-Rizo, AC Cavazos Sepulveda
Frontiers in Chemical Engineering 4, 1087435, 2023
22023
Passivation of Surface States in GaN by NiO Particles
M Velazquez-Rizo, P Kirilenko, D Iida, Z Zhuang, K Ohkawa
Crystals 12 (2), 211, 2022
12022
Strain-compensated InGaN red LEDs grown by micro-flow-channel MOVPE
K Ohkawa, M Velazquez-Rizo, M Najmi, D Iida
Gallium Nitride Materials and Devices XIX, PC1288614, 2024
2024
Strain-compensated InGaN quantum-well red standard/micro-LEDs
K Ohkawa, P Kirilenko, MA Najmi, M Velazquez-Rizo, Z Zhuang, D Iida
Gallium Nitride Materials and Devices XVIII, 2023
2023
Demonstration of 621-nm-wavelength InGaN-based single-quantum-well LEDs with an external quantum efficiency of 4.3% at 10.1 A/cm2 editors-pick
D Iida, P Kirilenko, M Velazquez-Rizo, Z Zhuang, MA Najmi, K Ohkawa
AIP Publishing, 2022
2022
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