Far-infrared-magneto-optic ellipsometry characterization of free-charge-carrier properties in highly disordered n-type Al0.19Ga0.33In0.48P

被引:21
作者
Hofmann, T
Schubert, M
Herzinger, CM
Pietzonka, I
机构
[1] Univ Leipzig, Fac Phys & Geosci, D-04103 Leipzig, Germany
[2] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA
[3] JA Woollam Co, Lincoln, NE 68508 USA
[4] Osram Opto Semicond, D-93049 Regensburg, Germany
关键词
D O I
10.1063/1.1578162
中图分类号
O59 [应用物理学];
学科分类号
摘要
For highly disordered n-type Al0.19Ga0.33In0.48P grown lattice matched to an undoped GaAs substrate, using far-infrared-magneto-optic generalized ellipsometry, the room-temperature free-charge-carrier parameters effective mass m*=0.12(0.01) m(0), concentration N=6.7(0.2)x10(17) cm(-3), and mobility mu=339(15) cm(2)/(V s) are determined by modeling the observed magneto-optic birefringence originating from the far-infrared free-charge-carrier excitations in the Al0.19Ga0.33In0.48P layer without additional electrical measurements. (C) 2003 American Institute of Physics.
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页码:3463 / 3465
页数:3
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