Growth and performance analysis of BAlN alloy thin film on Al substrate as a heat spreader for effective thermal management applications on white-based high-power LED

El-ladan, Abdulkarim Hamza; Shanmugan, S.

doi:10.1007/s00339-021-04617-3

Appl. Phys. A

2021

DOI: 10.1007/s00339-021-04617-3

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Growth and performance analysis of BAlN alloy thin film on Al substrate as a heat spreader for effective thermal management applications on white-based high-power LED

Abdulkarim Hamza El-ladan

S. Shanmugan

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Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures

Savant,

Nguyen,

Vishwakarma

et al. 2024

Physica Rapid Research Ltrs

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We report the growth of AlBN/β‐Nb2N nitride epitaxial heterostructures in which the AlBN is ferroelectric, and β‐Nb2N with metallic resistivity ≈40 μ at 300 K becomes superconducting below TC ≈ 0.5 K. Using nitrogen plasma molecular beam epitaxy, we grow hexagonal β‐Nb2N films on c‐plane Al2O3 substrates, followed by wurtzite AlBN. The AlBN is in epitaxial registry and rotationally aligned with the β‐Nb2N, and the hexagonal lattices of both nitride layers make angles of 30° with the hexagonal lattice of the Al2O3 substrate. The B composition of the AlBN layer is varied from 0 to 14.7%. It is found to depend weakly on the B flux, but increases strongly with decreasing growth temperature, indicating a reaction rate‐controlled growth. The increase in B content causes a non‐monotonic change in the a‐lattice constant and a monotonic decrease in the c‐lattice constant of AlBN. Sharp, abrupt epitaxial AlBN/β‐Nb2N/Al2O3 heterojunction interfaces and close symmetry matching are observed by transmission electron microscopy. The observation of ferroelectricity and superconductivity in epitaxial nitride heterostructures opens avenues for novel electronic and quantum devices.

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Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures

Savant,

Nguyen,

Vishwakarma

et al. 2024

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

show abstract

Influence of composition ratio on the thermal performance of AlNB nanocomposite for an efficient heat spreading in solid-state lighting package (LED)

El-ladan

Shanmugan

2021

J Mater Sci: Mater Electron

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Growth and performance analysis of BAlN alloy thin film on Al substrate as a heat spreader for effective thermal management applications on white-based high-power LED

Cited by 2 publications

References 50 publications

Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures

Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures

Influence of composition ratio on the thermal performance of AlNB nanocomposite for an efficient heat spreading in solid-state lighting package (LED)

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Growth and performance analysis of BAlN alloy thin film on Al substrate as a heat spreader for effective thermal management applications on white-based high-power LED

Cited by 2 publications

References 50 publications

Epitaxial AlBN/β‐Nb2N Ferroelectric/Superconductor Heterostructures

Epitaxial AlBN/β‐Nb2N Ferroelectric/Superconductor Heterostructures

Influence of composition ratio on the thermal performance of AlNB nanocomposite for an efficient heat spreading in solid-state lighting package (LED)

Contact Info

Product

Resources

About

Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures

Epitaxial AlBN/β‐Nb₂N Ferroelectric/Superconductor Heterostructures