Rd. Rajavel et al., MOLECULAR-BEAM EPITAXIAL-GROWTH AND PROPERTIES OF SHORT-WAVE INFRAREDHG0.3CD0.7TE FILMS, Journal of vacuum science & technology. B, Microelectronics and nanometer structures processing, measurement and phenomena, 14(3), 1996, pp. 2362-2365
Hg1-xCdxTe films with cut-off wavelengths ranging from 1.25 to 1.65 mu
m (at 300 K) in the short wave infrared band were prepared by molecul
ar beam epitaxy. The structural perfection of the Hg1-xCdxTe films was
strongly dependent on the degree of lattice matching provided by the
substrate. First reports of in situ p-type doping of Hg1-xCdxTe (x app
roximate to 0.7) alloys by molecular beam epitaxy is presented here. E
lectron and hole concentration in excess of 1 x 10(17) cm(-3) were mea
sured in In and As doped films, respectively. Analysis of variable tem
perature Hall effect data assuming singly ionized impurities provided
activation energies of 28.5 meV for As accepters, and 2.95 meV for In
donors. (C) 1996 American Vacuum Society.