Defect engineering in GaAs using high energy light ion irradiation: Role of electronic energy loss

Journal Article · Tue Feb 01 00:00:00 EST 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3534003· OSTI ID:21538080

Kabiraj, D ^[1]; Ghosh, Subhasis ^[2]

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1. Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India)
2. School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067 (India)

We report on the application of high energy light ions (Li and O) irradiation for modification of defects, in particular, for annihilation of point defects using electronic energy loss in GaAs to minimize the defects produced by nuclear collisions. The high resolution x-ray diffraction and micro-Raman spectroscopy have been used to monitor that no lattice damage or amorphization take place due to irradiating ions. The effects of irradiation on defects and their energy levels have been studied using thermally stimulated current spectroscopy. It has been observed that till an optimum irradiation fluence of 10{sup 13} ions/cm{sup 2} there is annihilation of native defects but further increase in irradiation fluence results in accumulation of defects, which scales with the nuclear energy loss process, indicating that the rate of defects produced by the binary collision process exceeds rate of defect annihilation. Defect annihilation due to electronic energy loss has been discussed on the basis of breaking of bonds and enhanced diffusivity of ionized native defects.

• OSTI ID: 21538080
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 3; Other Information: DOI: 10.1063/1.3534003; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
AMORPHOUS STATE
ANNIHILATION
CRYSTAL DEFECTS
DIFFUSION
ENERGY LEVELS
ENERGY LOSSES
ENERGY-LOSS SPECTROSCOPY
GALLIUM ARSENIDES
INSTABILITY
ION BEAMS
IRRADIATION
LIGHT IONS
LITHIUM
OXYGEN
PHYSICAL RADIATION EFFECTS
PLASMA
POINT DEFECTS
PROBABILITY
RAMAN SPECTROSCOPY
X-RAY DIFFRACTION
ALKALI METALS
ARSENIC COMPOUNDS
ARSENIDES
BEAMS
CHARGED PARTICLES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
GALLIUM COMPOUNDS
INTERACTIONS
IONS
LASER SPECTROSCOPY
LOSSES
METALS
NONMETALS
PARTICLE INTERACTIONS
PNICTIDES
RADIATION EFFECTS
SCATTERING
SPECTROSCOPY