Growth and properties of rare-earth arsenide InGaAs nanocomposites for terahertz generation

R. Salas; S. Guchhait; S. D. Sifferman; K. M. McNicholas; V. D. Dasika; E. M. Krivoy; D. Jung; M. L. Lee; S. R. Bank

doi:10.1063/1.4913611

Growth and properties of rare-earth arsenide InGaAs nanocomposites for terahertz generation

R. Salas, S. Guchhait, S. D. Sifferman, K. M. McNicholas, V. D. Dasika, E. M. Krivoy, D. Jung, M. L. Lee, S. R. Bank

Research output: Contribution to journal › Article › peer-review

Abstract

We explore the electrical, optical, and structural properties of fast photoconductors of In_0.53Ga_0.47As containing a number of different rare-earth arsenide nanostructures. The rare-earth species provides a route to tailor the properties of the photoconductive materials. LuAs, GdAs, and LaAs nanostructures were embedded into InGaAs in a superlattice structure and compared to the relatively well-studied ErAs:InGaAs system. LaAs:InGaAs was found to have the highest dark resistivities, while GdAs:InGaAs had the lowest carrier lifetimes and highest carrier mobility at moderate depositions. The quality of the InGaAs overgrowth appears to have the most significant effect on the properties of these candidate fast photoconductors.

Original language	English (US)
Article number	081103
Journal	Applied Physics Letters
Volume	106
Issue number	8
DOIs	https://doi.org/10.1063/1.4913611
State	Published - Feb 23 2015
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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10.1063/1.4913611

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title = "Growth and properties of rare-earth arsenide InGaAs nanocomposites for terahertz generation",

abstract = "We explore the electrical, optical, and structural properties of fast photoconductors of In0.53Ga0.47As containing a number of different rare-earth arsenide nanostructures. The rare-earth species provides a route to tailor the properties of the photoconductive materials. LuAs, GdAs, and LaAs nanostructures were embedded into InGaAs in a superlattice structure and compared to the relatively well-studied ErAs:InGaAs system. LaAs:InGaAs was found to have the highest dark resistivities, while GdAs:InGaAs had the lowest carrier lifetimes and highest carrier mobility at moderate depositions. The quality of the InGaAs overgrowth appears to have the most significant effect on the properties of these candidate fast photoconductors.",

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AU - Salas, R.

AU - Guchhait, S.

AU - Sifferman, S. D.

AU - McNicholas, K. M.

AU - Dasika, V. D.

AU - Krivoy, E. M.

AU - Jung, D.

AU - Lee, M. L.

AU - Bank, S. R.

PY - 2015/2/23

Y1 - 2015/2/23

N2 - We explore the electrical, optical, and structural properties of fast photoconductors of In0.53Ga0.47As containing a number of different rare-earth arsenide nanostructures. The rare-earth species provides a route to tailor the properties of the photoconductive materials. LuAs, GdAs, and LaAs nanostructures were embedded into InGaAs in a superlattice structure and compared to the relatively well-studied ErAs:InGaAs system. LaAs:InGaAs was found to have the highest dark resistivities, while GdAs:InGaAs had the lowest carrier lifetimes and highest carrier mobility at moderate depositions. The quality of the InGaAs overgrowth appears to have the most significant effect on the properties of these candidate fast photoconductors.

AB - We explore the electrical, optical, and structural properties of fast photoconductors of In0.53Ga0.47As containing a number of different rare-earth arsenide nanostructures. The rare-earth species provides a route to tailor the properties of the photoconductive materials. LuAs, GdAs, and LaAs nanostructures were embedded into InGaAs in a superlattice structure and compared to the relatively well-studied ErAs:InGaAs system. LaAs:InGaAs was found to have the highest dark resistivities, while GdAs:InGaAs had the lowest carrier lifetimes and highest carrier mobility at moderate depositions. The quality of the InGaAs overgrowth appears to have the most significant effect on the properties of these candidate fast photoconductors.

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Growth and properties of rare-earth arsenide InGaAs nanocomposites for terahertz generation

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