Research output per year
Research output per year
Personal profile
Research Overview
Professor Ohkawa‘s research interests include science and device application of energy-conversion phenomena toward a more sustainable future. Promising applications are solid state lighting and artificial photosynthesis. Ohkawa has refined MOVPE technique to the point where only his MOVPE can grow specifically designed InGaN as an essential component to fabricate efficient yellow- amber- and red-LEDs. InGaN is environmentally benign, and will snatch the device field by arsenides and phosphides. He is also trying to generate clean chemical energy from light energy by using nitride photocatalyst he invented. It is so-called artificial photosynthesis which produces not only H2 from H2O reduction but also HCOOH, CH4 and C2H5OH from CO2 reduction. Efficiency of nitride photosynthesis is already greater than average of biological photosynthetic one.
Key Research Areas
Electrical Engineering
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education
Ph.D., The University of Tokyo
1992
Award Date: Jan 1 1992
M.S., The University of Tokyo
1985
Award Date: Jan 1 1985
B.S., Tokyo University of Science
1983
Award Date: Jan 1 1983
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Optimizing Al Composition in Barriers for InGaN Amber Micro-LEDs with High Wall-Plug Efficiency
Sang, Y., Zhuang, Z., Xing, K., Jiang, Z., Li, C., Xu, F., Zhang, D., Yu, J., Zhao, J., Zhi, T., Tao, T., Li, C., Huang, K., Ohkawa, K., Zhang, R. & Liu, B., Jan 1 2024, In: IEEE Electron Device Letters. 45, 1, p. 76-79 4 p.Research output: Contribution to journal › Article › peer-review
3 Scopus citations -
Globalization in Photonics Research and Development
Ng, T. K., Rjeb, A., Cox, M. A., Cordette, S. J., Wan, Y., Ashry, I., Gan, Q., Fratalocchi, A., Ohkawa, K. & Ooi, B. S., 2023, (Accepted/In press) In: IEEE Photonics Journal. 16, 1, p. 1-9 9 p., 0600209.Research output: Contribution to journal › Article › peer-review
Open Access -
High crystallinity N-polar InGaN layers grown on cleaved ScAlMgO4substrates
Kirilenko, P., Najmi, M. A., Ma, B., Shushanian, A., Velazquez-Rizo, M., Iida, D. & Ohkawa, K., Apr 1 2023, In: AIP ADVANCES. 13, 4, 045011.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
Improvement of optical properties of InGaN-based red multiple quantum wells
Hou, X., Yang, T., Fan, S.-S., Xu, H., Iida, D., Liu, Y.-J., Mei, Y., Weng, G.-E., Chen, S.-Q., Zhang, B.-P. & Ohkawa, K., May 18 2023, In: Optics Express. 31, 11, p. 18567Research output: Contribution to journal › Article › peer-review
3 Scopus citations -
Investigation of N-polar InGaN growth on misoriented ScAlMgO4 substrates
Najmi, M. A., Kirilenko, P., Iida, D. & Ohkawa, K., Dec 2023, In: Scientific Reports. 13, 1, 19332.Research output: Contribution to journal › Article › peer-review
Open Access -
Investigations on the high performance of InGaN red micro-LEDs with single quantum well for visible light communication applications.
Hsiao, F.-H., Lee, T.-Y., Miao, W.-C., Pai, Y.-H., Iida, D., Lin, C.-L., Chen, F.-C., Chow, C.-W., Lin, C.-C., Horng, R.-H., He, J.-H., Ohkawa, K., Hong, Y.-H., Chang, C.-Y. & Kuo, H.-C., Jul 27 2023, In: Discover Nano. 18, 1Research output: Contribution to journal › Article › peer-review
11 Scopus citations -
Performance Analyses of High-Efficiency InGaN Red MicroLEDs for Visible Light Communication
Miao, W. C., Hsiao, F. H., Lee, T. Y., Iida, D., Horng, R. H., Ahn, H., Chow, C. W., Ohkawa, K., Chen, S. C. & Kuo, H. C., 2023, 2023 Conference on Lasers and Electro-Optics, CLEO 2023. Institute of Electrical and Electronics Engineers Inc., ATu3H.6. (2023 Conference on Lasers and Electro-Optics, CLEO 2023).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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RGB monolithic GaInN-based μLED arrays connected via tunnel junctions
Saito, T., Hasegawa, N., Imura, K., Suehiro, Y., Takeuchi, T., KAMIYAMA, S., Iida, D., Ohkawa, K. & Iwaya, M., Aug 4 2023, In: APPLIED PHYSICS EXPRESS.Research output: Contribution to journal › Article › peer-review
13 Scopus citations
Prizes
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Best Paper Award” from 10th Matsushita Electric Technical Symposium, Panasonic Co., Ltd.
Ohkawa, K. (Recipient), 1993
Prize: Award or Honor › Presentation Award
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Best Patent Award” from Central Research Laboratories, Panasonic Co., Ltd.
Ohkawa, K. (Recipient), 1991
Prize: Award or Honor › Innovation Award
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Best Researcher Award” from Panasonic Co., Ltd.
Ohkawa, K. (Recipient), 1992
Prize: Award or Honor › Innovation Award
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Elected Fellow of the Japan Society of Applied Physics (JSAP)
Ohkawa, K. (Recipient), 2019
Prize: Award or Honor › Learned Society
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Merit Award for development of blue-green lasers” from Panasonic Co., Ltd.
Ohkawa, K. (Recipient), 1993
Prize: Award or Honor › Innovation Award
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Outstanding achievement award” from the 125th committee on conversion between light and electricity
Ohkawa, K. (Recipient), 2009
Prize: Award or Honor › Excellence Award
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SSDM`92 Paper Award from the organizing committee of the International Conference on Solid State Devices and Materials
Ohkawa, K. (Recipient), 1992
Prize: Award or Honor › Presentation Award
Press/Media
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Researchers at King Abdullah University of Science and Technology (KAUST) Have Reported New Data on Electronics (High-performance and Temperature-stable Ingan Single-quantum-well Red Light-emitting Diodes Via Selective Hydrogen Passivation)
Ohkawa, K., Iida, D., Kirilenko, P. & Altinkaya, C.
05/20/24
1 item of Media coverage
Press/Media: Press / Media
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Reports from Nanjing University Add New Data to Findings in Applied Physics (High-temperature Performance of Ingan-based Amber Micro-light-emitting Diodes Using an Epitaxial Tunnel Junction Contact)
Ohkawa, K. & Iida, D.
04/30/24
1 item of Media coverage
Press/Media: Press / Media
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King Abdullah University of Science and Technology (KAUST) Reports Findings in Chemicals and Chemistry (Simultaneous Growth Strategy of High-Optical-Efficiency GaN NWs on a Wide Range of Substrates by Pulsed Laser Deposition)
Roqan, I., Ooi, B., Wehbe, N., Ohkawa, K., Iida, D., Alreshidi, F. & Najmi, M. A.
01/1/24
1 item of Media coverage
Press/Media: Press / Media
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Micro-LEDs Heighten Color and Definition for Immersive Displays
Ohkawa, K. & Iida, D.
09/14/23
1 item of Media coverage
Press/Media: Press / Media
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A new LED design for next-level realism in immersive displays
Ohkawa, K. & Iida, D.
09/7/23
1 item of Media coverage
Press/Media: Press / Media
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US Patent Issued to KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY on May 30 for "Metalorganic chemical vapor deposition system and method" (Saudi Arabia Inventor)
05/31/23
1 item of Media coverage
Press/Media: Press / Media
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Recent Findings in Hydrogen Described by Researchers from King Abdullah University of Science and Technology (KAUST) (Performance Improvement of InGaN-Based LEDs via a Current-Blocking Region Prepared via Hydrogen Passivation)
Ohkawa, K., Iida, D., Kirilenko, P. & Altinkaya, C.
01/5/23
1 item of Media coverage
Press/Media: Press / Media
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US Patent Issued to KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY on Oct. 11 for "Nitride-based electronic device having an oxide cladding layer and method of production" (Saudi Arabia Inventor)
10/12/22
1 item of Media coverage
Press/Media: Press / Media