An in situ gas chromatographic and mass spectrometric investigation of the role of substrate temperature in the production of zinc selenide from dimethylzinc and hydrogen selenide via metal–organic vapour phase epitaxy (MOVPE)

Author(s):  
J. Iwan Davies ◽  
Guanghan Fan ◽  
Maxwell J. Parrott ◽  
John O. Williams
2005 ◽  
Vol 892 ◽  
Author(s):  
Rachel Oliver ◽  
Menno J. Kappers ◽  
Joy Sumner ◽  
Ranjan Datta ◽  
Colin J. Humphreys

AbstractFast-turnaround, accurate methods for the assessment of threading dislocation densities in GaN are an essential research tool. Here, we present an in-situ surface treatment for use in MOVPE (metal-organic vapour phase epitaxy) growth, in which GaN is exposed to a SiH4 flux at 860 °C in the presence of NH3. Subsequent characterisation by atomic force microscopy shows that the treatment is effective in increasing edge and mixed/screw dislocation pit sizes on both n- and p-type material, and on partially coalesced GaN layers.


2000 ◽  
Vol 221 (1-4) ◽  
pp. 149-155 ◽  
Author(s):  
Markus Pristovsek ◽  
Bing Han ◽  
Jörg-Thomas Zettler ◽  
Wolfgang Richter

1999 ◽  
Vol 583 ◽  
Author(s):  
M. Zorn ◽  
P. Kurpas ◽  
A. Bhattacharya ◽  
M. Weyers ◽  
J.-T. Zettler ◽  
...  

AbstractThe mechanism causing the CuPtB-type ordering of InGaP grown lattice matched to GaAs was investigated by in-situ reflectance anisotropy spectroscopy (RAS/RDS). Experiments were performed during InGaP growth in metal-organic vapour phase epitaxy (MOVPE). From the experiments it can be concluded that bulk ordering only occurs when InGaP growth is performed under phosphorus-rich (2×1)-like surface conditions. Bulk ordering completely disappears under growth conditions which cause a less-phosphorus-rich (2×4)-like surface dimer configuration.


1997 ◽  
Vol 170 (1-4) ◽  
pp. 39-46 ◽  
Author(s):  
Werner Seifert ◽  
Niclas Carlsson ◽  
Jonas Johansson ◽  
Mats-Erik Pistol ◽  
Lars Samuelson

2010 ◽  
Vol 207 (5) ◽  
pp. 1070-1073 ◽  
Author(s):  
Abdul Kadir ◽  
Tapas Ganguli ◽  
M. R. Gokhale ◽  
A. P. Shah ◽  
Arnab Bhattacharya

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