Publication Date:
2016-06-15
Description:
The group-IV semiconductor alloy Ge 1− x − y Si x Sn y has recently attracted great interest due to its prospective potential for use in optoelectronics, electronics, and photovoltaics. Here, we investigate molecular beam epitaxy grown Ge 1− x − y Si x Sn y alloys lattice-matched to Ge with large Si and Sn concentrations of up to 42% and 10%, respectively. The samples were characterized in detail by Rutherford backscattering/channeling spectroscopy for composition and crystal quality, x-ray diffraction for strain determination, and photoluminescence spectroscopy for the assessment of band-gap energies. Moreover, the experimentally extracted material parameters were used to determine the SiSn bowing and to make predictions about the optical transition energy.
Print ISSN:
0003-6951
Electronic ISSN:
1077-3118
Topics:
Physics
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