| Emission mechanisms in Al-rich AlGaN/AlN quantum wells assessed by excitation power dependent photoluminescence spectroscopy Y Iwata, RG Banal, S Ichikawa, M Funato, Y Kawakami Journal of Applied Physics 117 (7), 2015 | 93 | 2015 |
| Carrier recombination in n-type 4H-SiC epilayers with long carrier lifetimes S Ichikawa, K Kawahara, J Suda, T Kimoto Applied physics express 5 (10), 101301, 2012 | 63 | 2012 |
| Eu-doped GaN and InGaN monolithically stacked full-color LEDs with a wide color gamut S Ichikawa, K Shiomi, T Morikawa, D Timmerman, Y Sasaki, ... Applied Physics Express 14 (3), 031008, 2021 | 56 | 2021 |
| High quality semipolar (11¯ 02) AlGaN/AlN quantum wells with remarkably enhanced optical transition probabilities S Ichikawa, Y Iwata, M Funato, S Nagata, Y Kawakami Applied Physics Letters 104 (25), 2014 | 46 | 2014 |
| Dominant Nonradiative Recombination Paths and Their Activation Processes in -related Materials S Ichikawa, M Funato, Y Kawakami Physical Review Applied 10 (6), 064027, 2018 | 37 | 2018 |
| Self‐Limiting Growth of Ultrathin GaN/AlN Quantum Wells for Highly Efficient Deep Ultraviolet Emitters H Kobayashi, S Ichikawa, M Funato, Y Kawakami Advanced Optical Materials 7 (21), 1900860, 2019 | 34 | 2019 |
| AlxGa1− xN-based semipolar deep ultraviolet light-emitting diodes R Akaike, S Ichikawa, M Funato, Y Kawakami Applied Physics Express 11 (6), 061001, 2018 | 24 | 2018 |
| Broad range thickness identification of hexagonal boron nitride by colors Y Anzai, M Yamamoto, S Genchi, K Watanabe, T Taniguchi, S Ichikawa, ... Applied physics express 12 (5), 055007, 2019 | 23 | 2019 |
| Size dependence of quantum efficiency of red emission from GaN: Eu structures for application in micro-LEDs DD Van Der Gon, D Timmerman, Y Matsude, S Ichikawa, M Ashida, ... Optics Letters 45 (14), 3973-3976, 2020 | 22 | 2020 |
| GaN: Eu, O-based resonant-cavity light emitting diodes with conductive AlInN/GaN distributed Bragg reflectors T Inaba, J Tatebayashi, K Shiomi, D Timmerman, S Ichikawa, Y Fujiwara ACS Applied Electronic Materials 2 (3), 732-738, 2020 | 21 | 2020 |
| Excitation Efficiency and Limitations of the Luminescence of Ions in D Timmerman, B Mitchell, S Ichikawa, J Tatebayashi, M Ashida, ... Physical Review Applied 13 (1), 014044, 2020 | 21 | 2020 |
| AlxGa1−xN‐Based Quantum Wells Fabricated on Macrosteps Effectively Suppressing Nonradiative Recombination M Hayakawa, S Ichikawa, M Funato, Y Kawakami Advanced Optical Materials 7 (2), 1801106, 2019 | 21 | 2019 |
| Color-tunablility in GaN LEDs based on atomic emission manipulation under current injection B Mitchell, R Wei, J Takatsu, D Timmerman, T Gregorkiewicz, W Zhu, ... ACS Photonics 6 (5), 1153-1161, 2019 | 19 | 2019 |
| Enhanced radiative recombination probability in AlGaN quantum wires on (0001) vicinal surface M Hayakawa, Y Hayashi, S Ichikawa, M Funato, Y Kawakami UV and Higher Energy Photonics: From Materials to Applications 9926, 52-58, 2016 | 16 | 2016 |
| Carrier dynamics and excitation of ions in GaN D Timmerman, B Mitchell, S Ichikawa, M Nagai, M Ashida, Y Fujiwara Physical Review B 101 (24), 245306, 2020 | 14 | 2020 |
| Room-temperature operation of near-infrared light-emitting diode based on Tm-doped GaN with ultra-stable emission wavelength S Ichikawa, N Yoshioka, J Tatebayashi, Y Fujiwara Journal of Applied Physics 127 (11), 2020 | 14 | 2020 |
| Enhanced Red Emission of Eu,O-Codoped Embedded in a Photonic Crystal Nanocavity with Hexagonal Air Holes S Ichikawa, Y Sasaki, T Iwaya, M Murakami, M Ashida, D Timmerman, ... Physical Review Applied 15 (3), 034086, 2021 | 12 | 2021 |
| Purcell-Effect-Enhanced Radiative Rate of Eu3+ Ions in Microdisks D Timmerman, Y Matsude, Y Sasaki, S Ichikawa, J Tatebayashi, ... Physical Review Applied 14 (6), 064059, 2020 | 12 | 2020 |
| Metalorganic vapor phase epitaxy of pit-free AlN homoepitaxial films on various semipolar substrates S Ichikawa, M Funato, Y Kawakami Journal of Crystal Growth 522, 68-77, 2019 | 12 | 2019 |
| Defect Electronics in SiC and Fabrication of Ultrahigh-Voltage Bipolar Devices T Kimoto, J Suda, G Feng, H Miyake, K Kawahara, HY Niwa, T Okuda, ... ECS Transactions 50 (3), 25, 2013 | 9 | 2013 |
