Growth of Ge1-xCx Alloys on Si by Combined Low-Energy Ion Beam and Molecular Beam Epitaxy Method

1996 ◽  
Vol 438 ◽  
Author(s):  
H. Shibata ◽  
S. Kimura ◽  
P. Fons ◽  
A. Yamada ◽  
Y. Makita ◽  
...  

AbstractA combined ion beam and molecular beam epitaxy (CIBMBE) method was applied for the deposition of a Ge1-xCx alloy on Si(100) using a low-energy ( 50 – 100 eV ) C+ ion beam and a Ge molecular beam. Metastable Ge1-xCx solid solutions were formed up to x = 0.047, and the CIBMBE method was shown to have a very high potential to grow metastable Ge1-x,Cx alloys. It was also revealed that the sticking coefficient of C+ ions into Ge was ∼28% for Ei, = 100 eV and ∼18% for Ei = 50 eV. Structural characterization suggests that the deposited films are single crystals grown epitaxially on the substrate with twins on {111} planes. Characterization of lattice dynamics using Raman spectroscopy suggested that the deposited layers have a small amount of ion irradiation damage.

1996 ◽  
Vol 439 ◽  
Author(s):  
H. Shibata ◽  
S. Kimura ◽  
P. Fons ◽  
A. Yamada ◽  
Y. Makita ◽  
...  

AbstractA combined ion beam and molecular beam epitaxy (CIBMBE) method was applied for the deposition of a Ge1−x, Cx, alloy on Si(100) using a low-energy ( 50 – 100 eV ) C+ ion beam and a Ge molecular beam. Metastable Ge1−xCx solid solutions were formed up to x= 0.047, and the CIBMBE method was shown to have a very high potential to grow metastable Ge1−xCx alloys. It was also revealed that the sticking coefficient of C+ ions into Ge was ˜28% for Ei = 100 eV and ˜18% for Ei. = 50 eV. Structural characterization suggests that the deposited films are single crystals grown epitaxially on the substrate with twins on {111} planes. Characterization of lattice dynamics using Raman spectroscopy suggested that the deposited layers have a small amount of ion irradiation damage.


1995 ◽  
Vol 402 ◽  
Author(s):  
H. Shibatal ◽  
Y. Makital ◽  
H. Katsumata ◽  
S. Kimura ◽  
N. Kobayashil ◽  
...  

AbstractWe have developed successfully the combined ion beam and molecular beam epitaxy (CIBMBE) system with a newly designed Knudsen cell for Si effusion. The CIBMBE system was applied to the epitaxial growth of Sil., Cx alloy thin films on Si using low-energy ( 100 – 300 eV ) C+ ion beam. Preliminary results on the characterization of the deposited films suggest high potential and reliability of the new Knudsen cell for Si effusion, as well as high ability of the CIBMBE method to produce thermally non-equilibrium materials. In addition, they indicate that the value of x decreases with increasing IC, which suggests that the selective sputtering for deposited C atoms by incident C+ ion beams takes place during CIBMBE processing. Precipitates of β-SiC were also found to be formed in the deposited films, whose amount was observed to increase with increasing IC.


1995 ◽  
Vol 77 (1) ◽  
pp. 146-152 ◽  
Author(s):  
Tsutomu Iida ◽  
Yunosuke Makita ◽  
Shinji Kimura ◽  
Stefan Winter ◽  
Akimasa Yamada ◽  
...  

1993 ◽  
Vol 300 ◽  
Author(s):  
Tsutomu Iida ◽  
Yunosuke Makita ◽  
Shinji Kimura ◽  
Stefan Winter ◽  
Akimasa Yamada ◽  
...  

ABSTRACTLow energy (100 eV) impinging of carbon (C+) ions was made during molecular beam epitaxy (MBE) of GaAs using combined ion beam and molecular beam epitaxy (CIBMBE) technologies for the growth temperature ( Tg ) between 500 °C and 590 °C. 2 K photoluminescence (PL), Raman scattering and Hall effect measurements were made for the samples. In the PL spectra two specific emissions, “g” and [g-g], were observed which are closely associated with acceptor impurities. PL and Hall effect measurements indicate that C atoms were very efficiently introduced during MBE growth by CIBMBE and were both optically and electrically well activated as acceptors even at Tg=500 °C. The results reveal that defect-free impurity doping without subsequent annealing can be achieved by CIBMBE method.


1985 ◽  
Vol 24 (Part 2, No. 2) ◽  
pp. L115-L118 ◽  
Author(s):  
Saburo Shimizu ◽  
Osamu Tsukakoshi ◽  
Souji Komiya ◽  
Yonosuke Makita

Author(s):  
Г.Э. Цырлин ◽  
Р.Р. Резник ◽  
А.Е. Жуков ◽  
Р.А. Хабибуллин ◽  
К.В. Маремьянин ◽  
...  

The data on the synthesis and characterization of structures for a quantum cascade terahertz laser in an AlGaAs/GaAs material system on GaAs substrates using the molecular beam epitaxy method are presented. The features necessary for the implementation of such structures are considered. It was shown that for this geometry almost single-mode lasing is observed at a frequency of ∼ 3 THz up to a temperature of ∼ 60 K.


Author(s):  
Tsutomu Iida ◽  
Yunosuke Makita ◽  
Shinji Kimura ◽  
Stefan Winter ◽  
Akimasa Yamada ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document