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Dr. M. Ajmal Khan (Wazir), PhD (Solar Cells), Univ., of Tsukuba, Japan.
Dr. M. Ajmal Khan (Wazir), PhD (Solar Cells), Univ., of Tsukuba, Japan.
CPR, RIKEN
E-mail confirmado em riken.jp - Página inicial
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13 mW operation of a 295–310 nm AlGaN UV-B LED with a p-AlGaN transparent contact layer for real world applications
MA Khan, N Maeda, M Jo, Y Akamatsu, R Tanabe, Y Yamada, ...
Journal of Materials Chemistry C 7 (1), 143-152, 2019
972019
In-situ heavily p-type doping of over 1020 cm− 3 in semiconducting BaSi2 thin films for solar cells applications
M Ajmal Khan, KO Hara, W Du, M Baba, K Nakamura, M Suzuno, K Toko, ...
Applied physics letters 102 (11), 2013
972013
Improved photoresponsivity of semiconducting BaSi2 epitaxial films grown on a tunnel junction for thin-film solar cells
W Du, M Suzuno, M Ajmal Khan, K Toh, M Baba, K Nakamura, K Toko, ...
Applied physics letters 100 (15), 2012
622012
External Quantum Efficiency of 6.5% at 300 nm Emission and 4.7% at 310 nm Emission on Bare Wafer of AlGaN-Based UVB LEDs
MA Khan, Y Itokazu, N Maeda, M Jo, Y Yamada, H Hirayama
ACS Appl. Electron. Mater. 2 (7), 1892–1907, 2020
512020
Achieving 9.6% efficiency in 304 nm p-AlGaN UVB LED via increasing the holes injection and light reflectance
MA Khan, N Maeda, J Yun, M Jo, Y Yamada, H Hirayama
Scientific reports 12 (1), 2591, 2022
502022
Electrical characterization and conduction mechanism of impurity-doped BaSi2 films grown on Si (111) by molecular beam epitaxy
MA Khan, T Saito, K Nakamura, M Baba, W Du, K Toh, K Toko, ...
Thin Solid Films 522, 95-99, 2012
482012
Precipitation control and activation enhancement in boron-doped p+-BaSi2 films grown by molecular beam epitaxy
MA Khan, K Nakamura, W Du, K Toko, N Usami, T Suemasu
Applied physics letters 104 (25), 2014
432014
Fabrication and characterization of BaSi2 epitaxial films over 1 µm in thickness on Si (111)
R Takabe, K Nakamura, M Baba, W Du, MA Khan, K Toko, M Sasase, ...
Japanese Journal of Applied Physics 53 (4S), 04ER04, 2014
402014
Influence of undoped‐AlGaN final barrier of MQWs on the performance of lateral‐type UVB LEDs
M Ajmal Khan, E Matsuura, Y Kashima, H Hirayama
physica status solidi (a) 216 (18), 1900185, 2019
352019
Improved external quantum efficiency of 293 nm AlGaN UVB LED grown on an AlN template
MA Khan, T Matsumoto, N Maeda, N Kamata, H Hirayama
Japanese Journal of Applied Physics 58 (SA), SAAF01, 2018
332018
High internal quantum efficiency and optically pumped stimulated emission in AlGaN-based UV-C multiple quantum wells
H Murotani, R Tanabe, K Hisanaga, A Hamada, K Beppu, N Maeda, ...
Applied Physics Letters 117 (16), 2020
322020
Beyond 53% internal quantum efficiency in a AlGaN quantum well at 326 nm UVA emission and single-peak operation of UVA LED
MA Khan, R Takeda, Y Yamada, N Maeda, M Jo, H Hirayama
Optics Letters 45 (2), 495-498, 2020
312020
Molecular Beam Epitaxy of BaSi2 Films with Grain Size over 4 µm on Si (111)
M Baba, K Nakamura, W Du, MA Khan, S Koike, K Toko, N Usami, N Saito, ...
Japanese Journal of Applied Physics 51 (9R), 098003, 2012
312012
Correlation between excitons recombination dynamics and internal quantum efficiency of AlGaN-based UV-A multiple quantum wells
H Murotani, H Miyoshi, R Takeda, H Nakao, M Ajmal Khan, N Maeda, ...
Journal of Applied Physics 128 (10), 2020
282020
Impact of Mg level on lattice relaxation in a p-AlGaN hole source layer and attempting excimer laser annealing on p-AlGaN HSL of UVB emitters
MA Khan, JP Bermundo, Y Ishikawa, H Ikenoue, S Fujikawa, E Matsuura, ...
Nanotechnology 32 (5), 055702, 2020
272020
Milliwatt power UV-A LEDs developed by using n-AlGaN superlattice buffer layers grown on AlN templates
T Matsumoto, MA Khan, N Maeda, S Fujikawa, N Kamata, H Hirayama
Journal of Physics D: Applied Physics 52 (11), 115102, 2019
272019
Al-and Cu-doped BaSi2 films on Si (111) substrate by molecular beam epitaxy and evaluation of depth profiles of Al and Cu atoms
MA Khan, M Takeishi, Y Matsumoto, T Saito, T Suemasu
Physics Procedia 11, 11-14, 2011
272011
Photoresponse properties of BaSi2 epitaxial films grown on the tunnel junction for high-efficiency thin-film solar cells
T Suemasu, T Saito, K Toh, A Okada, MA Khan
Thin solid films 519 (24), 8501-8504, 2011
262011
Suppressing the efficiency droop in AlGaN-based UVB LEDs
M Usman, S Malik, MA Khan, H Hirayama
Nanotechnology 32 (21), 215703, 2021
242021
Performance enhancement of AlGaN deep-ultraviolet laser diode using compositional Al-grading of Si-doped layers
MN Sharif, MA Khan, Q Wali, I Demir, F Wang, Y Liu
Optics & Laser Technology 152, 108156, 2022
232022
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