Influence of Electric Field Coupling Model on the Simulated Performances of a GaN Based Planar Nanodevice
Joint Authors
Xiong, Jianwen
Xu, K. Y.
Wang, Z. N.
Wang, Y. N.
Wang, G.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The performances of a two-dimensional electron gas (2DEG) based planar nanodevice are studied by a two-dimensional-three-dimensional (2D-3D) combined model and an entirely 2D model.
In both models, 2DEGs are depicted by 2D ensemble Monte Carlo (EMC) method.
However electric field distributions in the devices are obtained by self-consistently solving 2D and 3D Poisson equations for the 2D model and the 2D-3D model, respectively.
Simulation results obtained by both models are almost the same at low bias while showing distinguished differences at high bias.
The 2D model predicts larger output current and slightly higher threshold voltage of Gunn oscillations.
Although the fundamental frequencies of current oscillations obtained by both models are similar, the deviation of wave shape from sinusoidal waveform obtained by the 2D model is more serious than that obtained by 2D-3D model.
Moreover, results obtained by the 2D model are more sensitive both to the bias conditions and to the change of device parameters.
Interestingly, a look-like second harmonic oscillation has been observed at DC bias.
We contribute the origin of divergences in simulation results to the different coupling path of electric field in the two models.
And the second-harmonic oscillations at DC bias should be the result of the appearance of concomitant oscillations beside the channel excited by strong electric-field effects.
American Psychological Association (APA)
Xu, K. Y.& Wang, Z. N.& Wang, Y. N.& Xiong, Jianwen& Wang, G.. 2013. Influence of Electric Field Coupling Model on the Simulated Performances of a GaN Based Planar Nanodevice. Journal of Nanomaterials،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1031300
Modern Language Association (MLA)
Xu, K. Y.…[et al.]. Influence of Electric Field Coupling Model on the Simulated Performances of a GaN Based Planar Nanodevice. Journal of Nanomaterials No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-1031300
American Medical Association (AMA)
Xu, K. Y.& Wang, Z. N.& Wang, Y. N.& Xiong, Jianwen& Wang, G.. Influence of Electric Field Coupling Model on the Simulated Performances of a GaN Based Planar Nanodevice. Journal of Nanomaterials. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1031300
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1031300