Journal ArticleDOI
Enhanced Sheet Charge Density in DIBS Grown CdO Alloyed ZnO Buffer Based Heterostructure
Arif Khan,Rohit Singh,Ritesh Bhardwaj,A. Kumar,Amit K. Das,Pankaj Misra,Abhinav Kranti,Shaibal Mukherjee +7 more
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TLDR
In this paper, the authors report on achieving significantly high sheet charge density (ns) in MgZnO/CdZnNO heterostructure, as compared with that in mgZNO/ZnOs, at lower Mg ( ${\le} 0.15$ ) compositions in barrier MgNO layer, with both heterostructures grown by dual ion beam sputtering technique.Abstract:
In this letter, we report on achieving significantly high (~ $6{\times}$ ) sheet charge density (ns) in MgZnO/CdZnO heterostructure, as compared with that in MgZnO/ZnO, at lower Mg ( ${\le} 0.15$ ) compositions in barrier MgZnO layer, with both heterostructures grown by dual ion beam sputtering technique. Buffer CdZnO and barrier MgZnO layers are probed separately to investigate carrier density in defect prone sputtered layers. Capacitance-voltage measurement and temperature-dependent Hall measurement confirm the presence of quantum confined carrier density at barrier-buffer interface, suggesting that the enhancement in carrier densities in the heterostructure over individual layers is probably due to the formation of 2-D electron gas (2-DEG).read more
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Analytical Performance Analysis of CdZnO/ZnO-Based Multiple Quantum Well Solar Cell
TL;DR: In this paper, an analytical and simulation evaluation of multiple quantum well solar cells (MQWSC) with CdZnO/ZnOs as the intrinsic layer, Sb-doped ZnO (SZO) as a p-type layer, and GZO as an n- type layer of the p-i-n solar cell (SC).
The mobility of two-dimensional electron gas in AIGaN/GaN heterostructures with varied A! content
TL;DR: The calculated function of the interface roughness parameters on the Al content shows that the stress caused AlGaN/GaN interface degradation at higher Al content is an important factor in the limitation of the interfaces roughness scattering on the 2DEG mobility in Al GaN/ GaN heterostructures with high Al content.
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Analog/RF and Linearity Distortion Analysis of MgZnO/CdZnO Quadruple-Gate Field Effect Transistor (QG-FET)
TL;DR: In this article, the authors proposed a novel MgZnO/CdZnNO Quadruple-Gate Field Effect Transistor (QG-FET) with identical physical dimensions.
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Analysis of Drain Current in Polycrystalline MgZnO/ZnO and MgZnO/CdZnO HFET
TL;DR: The results suggest that the saturation drain current in MCO HFET can be comparable to that in MZO HFET when enhancement is considered along with the reduction in the understanding and therefore optimizing the direct current (dc) performance of polycrystalline ZnO HFETS.
Journal ArticleDOI
Drain Current Optimization in DIBS-Grown MgZnO/CdZnO HFET
TL;DR: In this article, a dual-ion beam sputtering (DIBS)-grown MgZnO/CdZnOs (MCO)-based gateless heterostructure field effect transistor (HFET) is presented.
References
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Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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Recent Advances in ZnO Materials and Devices
TL;DR: Wurtzitic ZnO is a widebandgap semiconductor which has many applications, such as piezoelectric transducers, varistors, phosphors, and transparent conducting films as discussed by the authors.
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Two dimensional electron gases induced by spontaneous and piezoelectric polarization in undoped and doped AlGaN/GaN heterostructures
Oliver Ambacher,B. E. Foutz,Joseph A. Smart,James R. Shealy,Nils Weimann,K. Chu,M. J. Murphy,A. J. Sierakowski,William J. Schaff,L.F. Eastman,Roman Dimitrov,A. Mitchell,Martin Stutzmann +12 more
TL;DR: In this paper, a combination of high resolution x-ray diffraction, atomic force microscopy, Hall effect, and capacitance-voltage profiling measurements is used to calculate the polarization induced sheet charge bound at the AlGaN/GaN interfaces.
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Band gap engineering based on MgxZn1−xO and CdyZn1−yO ternary alloy films
Takahiro Makino,Y. Segawa,Masashi Kawasaki,Akira Ohtomo,R. Shiroki,K. Tamura,Tadashi Yasuda,Hideomi Koinuma +7 more
TL;DR: In this paper, the structural and optical properties of II-VI oxide alloys, MgxZn1−xO and CdyZn 1−yO, grown by pulsed-laser deposition, were described.
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Spatial confinement of laser light in active random media
Hui Cao,J. Y. Xu,D. Z. Zhang,Shih-Hui Chang,Seng-Tiong Ho,E. W. Seelig,Xiaogang Liu,Robert P. H. Chang +7 more
TL;DR: The experimental data suggest that coherent amplification of the scattered light enhances the interference effect and helps the spatial confinement of laser light in micrometer-sized random media.