Heavily doped p-GaAs grown by low-pressure organometallic vapor phase epitaxy using liquid CCl4
- 1 September 1992
- journal article
- letter
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 72 (5) , 2063-2065
- https://doi.org/10.1063/1.351637
Abstract
A hole concentration greater than 1020 cm−3 in GaAs has been achieved using a liquid CCl4 source for carbon in a low‐pressure organometallic vapor phase epitaxy system. The resistivity and hole mobility measured at 300 K for a heavily carbon‐doped (1.2×1020 cm−3) Hall sample made from a thin (180 nm) epitaxial layer were 8.0×10−4 Ω cm and 65 cm2/V s, respectively. Carbon‐doped samples with excellent surface morphology were achieved using a V/III ratio of 22, and growth pressure and temperature of 80 Torr and 600 °C, respectively. A novel photoluminescence technique, based on band‐gap shrinkage of heavily doped p+‐GaAs, has been shown to be useful for nondestructive measurement of the hole concentration in submicrometer layers.This publication has 13 references indexed in Scilit:
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