Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.196103
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- DOE-BES
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Surfactant effects are usually achieved by the addition of a single surface element. We demonstrate by first-principles calculations a dual-surfactant effect of Sb and H on enhancing Zn doping in organometallic vapor phase epitaxially grown GaP thin films. The combined effects of Sb and H lower significantly the doping energy of Zn in GaP, while neither Sb nor H can function alone as an effective surfactant. Our finding suggests a general strategy for enhancing p-type doping of III-V semiconductors by using a metallic-element with H as dual surfactants.
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