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U.S. Department of Energy
Office of Scientific and Technical Information
 

Non-Equilibrium Synthesis of Semiconductor Alloys for Energy Applications

Technical Report ·
DOI:https://doi.org/10.2172/2322442· OSTI ID:2322442
 [1]
  1. South Dakota School of Mines and Technology, Rapid City, SD (United States); OGCA
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This project explores the synthesis under equilibrium/non-equilibrium conditions of semiconductor alloys critical to SSL to impose top-down influence on the formation of atomic-scale microstructures. A plasma-enhanced MOCVD (PE-MOCVD) technique is employed, in which plasma generated within the low-pressure reactor environment introduces additional energy that is delivered to the gas-phase reactants and growth surface, allowing relatively low substrate temperatures to be maintained, rapidly switching the crystal-growth environment into a non-equilibrium state. The project coordinates on-going work at National Renewable Energy Laboratory (NREL) that addresses order/disorder AlxIn1-xP (AlInP) confinement structures, which are predicted to surpass the power-conversion efficiency of current materials used for red/amber LEDs as components of so-called color-mixed LEDs, which integrate multiple LEDs in a single device for improved color rendering. Ordering, phase separation, and strain relaxation are central to this technology. During growth, each spontaneous process could be suppressed or enhanced on demand by application of plasma as an additional handle. This technique could have broader applications to other energy technologies, such as photovoltaics.

Research Organization:
South Dakota School of Mines and Technology, Rapid City, SD (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
DOE Contract Number:
SC0019430
OSTI ID:
2322442
Report Number(s):
DOE-SDM-DE--SC0019430-1
Country of Publication:
United States
Language:
English

References (4)

Quantitative order‐parameter measurement in lattice‐mismatched AlInP using precession electron diffraction journal July 2021
Design and Demonstration of AlxIn1-xP Multiple Quantum Well Light-Emitting Diodes journal May 2021
Orientations of Al4C3 and Al films grown on GaAs substrates journal August 2019
Applications of plasma-enhanced metalorganic chemical vapor deposition journal April 2020

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