GaAs avalanche photodiodes and the effect of rapid thermal annealing on crystalline quality of GaAs grown on Si by molecular-beam epitaxy

Author(s):  
N. Chand
1989 ◽  
Vol 145 ◽  
Author(s):  
B.J. Wu ◽  
K.L. Wang ◽  
Y.J. Mii ◽  
Y.S. Yoon ◽  
A.T. Wu ◽  
...  

AbstractGaAs layers have been successfully grown on tilted (100) Si as well as porous Si substrates by molecular beam epitaxy(MBE). Rapid thermal annealing and vacuum thermal annealing have been used to further improve the quality of the epitaxial layers. We observed that the dislocation density near the interface of the heterostructure is higher for GaAs on Si substrate. Both annealing processes are proven to be useful in improving layer quality, while the vacuum thermal annealing seemed to be more effective in minimizing the residual stress.


1985 ◽  
Vol 54 ◽  
Author(s):  
Julia M. Phillips ◽  
W. M. Augustyniak

ABSTRACTWe report the first successful growth of an epitaxial insulator-metal-semiconductor structure. A layer of metallic CoSi2, followed by a layer of insulating CaF2 have been grown by molecular beam epitaxy on Si(111). The epitaxial quality of the CaF2 layer improves upon rapid thermal annealing, while the already excellent crystallinity of the CoSi2 layer is unaffected. The lattice of the CoSi2 is rotated 180° with respect to the Si lattice while the CaF2 lattice is aligned with the Si lattice.


1986 ◽  
Vol 49 (13) ◽  
pp. 815-817 ◽  
Author(s):  
N. Chand ◽  
R. People ◽  
F. A. Baiocchi ◽  
K. W. Wecht ◽  
A. Y. Cho

1987 ◽  
Vol 102 ◽  
Author(s):  
M. Cerullo ◽  
Julia M. Phillips ◽  
M. Anzlowar ◽  
L. Pfeiffer ◽  
J. L. Batstone ◽  
...  

ABSTRACTA new in-situ rapid thermal annealing (RTA) apparatus which can be used to anneal entire wafers in an ultra high vacuum environment has been designed to be used in conjunction with the epitaxial growth of heterostructures. Drastic improvement in the crystallinity of CaF2/Si(100) can be achieved with RTA, and our results suggest that RTA can be used as an on-line processing technique for novel epitaxial structures.


1988 ◽  
Vol 144 ◽  
Author(s):  
B.J. Skromme ◽  
N.G. Stoffel ◽  
A.S. Gozdz ◽  
M.C. Tamargo ◽  
S.M. Shibli

ABSTRACTWe describe the effects of rapid thermal annealing on the photoluminescence (PL) and electrical properties of heteroepitaxial ZnSe grown by molecular beam epitaxy on GaAs, using either no cap or plasma-deposited SiO2, Si3N4, or diamond-like C caps, and annealing temperatures from 500 to 800°C. Capless anneals (in contact with GaAs) produce badly degraded PL properties, while capped anneals can prevent this degradation. We show that Si3N4 is significantly more effective in preventing Zn out-diffusion through t e cap than previously employed SiO2 films, as evidenced by less pronounced PL features related to the creation of Zn vacancies during the anneal. Implant damage tends to enhance the Zn vacancy formation. Rapid thermal annealing with Si3N4 caps is shown to optically activate shallow N acceptor implants.


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