Two-dimensional electron-gas density in AlXGa1-XN/GaN heterostructure field-effect transistors. Maeda, N., Nishida, T., Kobayashi, N., & Tomizawa, M. Applied Physics Letters, 73(13):1856–1858, 1998.
doi  abstract   bibtex   
We have calculated maximum two-dimensional electron-gas densities in AlXGa1-XN/GaN heterostructure field-effect transistors with wurtzite crystal structures in (0001) orientation, by self-consistently solving Schrödinger's and Poisson's equations, taking the piezoelectric effect into account. In order to obtain a guideline for increasing electron densities in the devices, we have examined dependences of the maximum electron densities on both Al compositions of AlXGa1-XN layers and lattice relaxations at the heterointerfaces. The maximum electron density was found to depend more strongly on the lattice relaxation than on the Al composition, which determines the conduction-band discontinuity. Controlling the lattice relaxation is shown to be crucial for obtaining high electron densities in the devices. © 1998 American Institute of Physics.
@article{maeda_two-dimensional_1998,
	title = {Two-dimensional electron-gas density in {AlXGa1}-{XN}/{GaN} heterostructure field-effect transistors},
	volume = {73},
	issn = {00036951},
	doi = {10.1063/1.122305},
	abstract = {We have calculated maximum two-dimensional electron-gas densities in AlXGa1-XN/GaN heterostructure field-effect transistors with wurtzite crystal structures in (0001) orientation, by self-consistently solving Schrödinger's and Poisson's equations, taking the piezoelectric effect into account. In order to obtain a guideline for increasing electron densities in the devices, we have examined dependences of the maximum electron densities on both Al compositions of AlXGa1-XN layers and lattice relaxations at the heterointerfaces. The maximum electron density was found to depend more strongly on the lattice relaxation than on the Al composition, which determines the conduction-band discontinuity. Controlling the lattice relaxation is shown to be crucial for obtaining high electron densities in the devices. © 1998 American Institute of Physics.},
	number = {13},
	journal = {Applied Physics Letters},
	author = {Maeda, Narihiko and Nishida, Toshio and Kobayashi, Naoki and Tomizawa, Masaaki},
	year = {1998},
	pages = {1856--1858},
}

Downloads: 0