Zobrazeno 1 - 10
of 26
pro vyhledávání: '"K. C. Zeng"'
Autor:
C. Ignatiev, J. Y. Lin, C. H. Wei, K. C. Zeng, D. N. Braski, James H. Edgar, Hongxing Jiang, Z. Y. Xie, Jharna Chaudhuri
Publikováno v:
Journal of Electronic Materials. 29:452-456
BxGa1−xN films were deposited on 6H-SiC (0001) substrates at 1000°C by low pressure MOVPE using diborane, trimethylgallium, and ammonia as precursors. The presence of boron was detected by Auger scanning microprobe, the shift of the (00.2) x-ray d
Autor:
Jingyu Lin, D. N. Braski, K. C. Zeng, Hongxing Jiang, C. Ignatiev, Z. Y. Xie, C. H. Wei, James H. Edgar, J. Chaudhuri
Publikováno v:
MRS Internet Journal of Nitride Semiconductor Research. 4:429-434
Boron was incorporated into GaN in order to determine its limits of solubility, its ability of reducing the lattice constant mismatch with 6H-SiC, as well as its effects on the structural and optical properties of GaN epilayers. BxGa1−xN films were
Publikováno v:
Applied Physics Letters. 76:3040-3042
A set of GaN/AlxGa1−xN(x≈0.2) multiple quantum wells (MQWs) with well widths, Lw, varying from 6 to 48 A has been grown by metalorganic chemical vapor deposition under the optimal GaN-like growth conditions. Picosecond time-resolved photoluminesc
Publikováno v:
Applied Physics Letters. 75:2563-2565
Microrings of varying sizes have been fabricated from InxGa1−xN/GaN (x∼0.15) multiple quantum wells (MQWs). Photolithography and dry etching techniques including both ion-beam and inductively coupled plasma etching were employed to pattern the II
Publikováno v:
Applied Physics Letters. 75:763-765
An array of GaN hexagonal pyramids with a side length of 8.0 μm was fabricated by selective epitaxial overgrowth. These microsized pyramids are highly efficient microcavities. Three types of optical resonance modes with mode spacings of 10, 5.0, and
Publikováno v:
Applied Physics Letters. 74:3821-3823
Picosecond time-resolved photoluminescence (PL) spectroscopy has been used to investigate the optical properties of an insulating GaN epilayer grown by metalorganic chemical vapor deposition on a sapphire substrate. Two emission lines at 3.503 and 3.
Publikováno v:
Applied Physics Letters. 74:1227-1229
Picosecond time-resolved photoluminescence (PL) spectroscopy has been used to investigate the optical properties of GaN pyramids overgrown on hexagonal-patterned GaN(0001) epilayers on sapphire and silicon substrates with AlN buffer layers. We found
Publikováno v:
Applied Physics Letters. 73:2476-2478
Time-resolved photoluminescence (PL) spectroscopy was used to investigate carrier distributions in a GaN/AlGaN multiple quantum well (MQW) sample under high excitation intensities necessary to achieve lasing threshold. Room temperature PL spectra sho
Collective effects of interface roughness and alloy disorder in InxGa1−xN/GaN multiple quantum wells
Publikováno v:
Applied Physics Letters. 73:1724-1726
The collective effects of alloy disorder and interface roughness on optical properties of InxGa1−xN/GaN multiple quantum wells (MQWs) have been studied. The results are compared with those of GaN/AlGaN MQWs and InGaN epilayers. InxGa1−xN/GaN MQWs
Autor:
Muhammad Asif Khan, Lun Dai, R. A. Mair, A. Botchkarev, K. C. Zeng, Hadis Morkoç, Hongxing Jiang, B. R. Zhang, Jingyu Lin, Wook Kim
Publikováno v:
Applied Physics Letters. 72:1530-1532
Optical resonance modes have been observed in optically pumped microdisk cavities fabricated from 50 A/50 A GaN/AlxGa1−xN(x∼0.07) and 45 A/45 A InxGa1−xN/GaN(x∼0.15) multiple quantum well structures. Microdisks, approximately 9 μm in diamete