Accurate calibration for the quantification of the Al content in AlGaN epitaxial layers by energy-dispersive X-ray spectroscopy in a Transmission Electron Microscope
Accurate calibration for the quantification of the Al content in AlGaN epitaxial layers by energy-dispersive X-ray spectroscopy in a Transmission Electron Microscope
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通过透射电子显微镜中的能量色散 X 射线光谱准确定量 AlGaN 外延层中的 Al 含量
DOI:
10.1088/1742-6596/326/1/012028
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Amari H
中科院分区:
文献类型:
--
作者:
Amari H
Since the band structure of group III-nitrides presents a direct electronic transition with a band-gap energy covering the range from 3.4 eV for (GaN) to 6.2 eV (for AlN) at room temperature as well as a high thermal conductivity, aluminium gallium nitride (AlGaN) is a strong candidate for high-power and high-temperature electronic devices and short-wavelength (visible and ultraviolet) optoelectronic devices. We report here a study by energy-filtered transmission electron microscopy (EFTEM) and energy-dispersive X-ray spectroscopy (EDXS) of the micro structure and elemental distribution in different aluminium gallium nitride epitaxial layers grown by different research groups. A calibration procedure is out-lined that yields the Al content from EDXS to within∼ 1 at% precision.
DOI:
10.1088/1742-6596/209/1/012029
发表时间:
2010
期刊:
Journal of Physics: Conference Series
影响因子:
--
作者:
T. Walther
通讯作者:
T. Walther
DOI:
10.1557/proc-449-149
发表时间:
1996
期刊:
MRS Proceedings
影响因子:
--
作者:
H. Riechert;R. Averbeck;A. Graber;M. Schienle;U. Strauβ;H. Tews
通讯作者:
H. Tews