Temperature dependent electrical properties of heavily carbon-doped GaAs grown by low-pressure metalorganic chemical vapor deposition

1995 ◽  
Vol 93 (11) ◽  
pp. 939-942 ◽  
Author(s):  
Seong-Il Kim ◽  
Chang-Sik Son ◽  
Min-Suk Lee ◽  
Yong Kim ◽  
Moo-Sung Kim ◽  
...  
1993 ◽  
Vol 300 ◽  
Author(s):  
M. S. Feng ◽  
H. D. Chen ◽  
C. H. Wu

ABSTRACTHeavily Carbon doped GaAs(l×1018−1×1020cm−3 ) grown by low pressure metalorganic chemical vapor deposition(LPMOCVD) using triethylgallium(TEGa), arsine(AsH3) as sources and liquid carbon-tetrachoride(CCI4) as dopant has been investigated. The carrier concentration was verified at various growth temperatures, V/III ratios and CCI4 flow rates. Dopant concentration first increased from 550°C and reached a maxium at 570°C and then decreased monotonously. Carbon incorporation was strongly enhanced when V/III ratio was less than 30 at Tg=590°C or less than 40 at Tg=630°C. Hole concentration increased and then decreased as CCI4 increased. The doping efficiency of epitaxtial layers grown on(100) substrate was higher than that on 2° off toward <110> misoriented substrate. Carbon doped GaAs films had higher Hall mobility than zinc doped GaAs films at high doping level due to less self-compensation. The highest dopant concentration in this system was 2.3×1020cm−3 at Tg=580°C and V/III=10.


1993 ◽  
Vol 132 (3-4) ◽  
pp. 414-418 ◽  
Author(s):  
T. Soga ◽  
T. Suzuki ◽  
M. Mori ◽  
Z.K. Jiang ◽  
T. Jimbo ◽  
...  

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