Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases

V. Korsaks

doi:10.1016/j.materresbull.2015.06.032

Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases

V. Korsaks^*

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

Gas sensing properties of hBN powder bulk and nanosize were studied. It was demonstrated that for hBN powders with grain sizes of 70 nm, 1 μm and 5 μm the native defect-induced luminescence observed at 400 nm under 265 nm light excitation and room temperature is sensitive to oxygen gas reducing luminescence intensity. The highest value of luminescence intensity is reached when sample is in vacuum. Results obtained allow conclusion that the hBN powder is prospective for sensing of oxygen gas. Some material properties such as dependence of luminescence intensity on vacuum level and pumping time, ratio of luminescence intensity when sample is in vacuum and gas, its dependence on material grain size were studied.

Original language	English
Article number	8289
Pages (from-to)	976-979
Number of pages	4
Journal	Materials Research Bulletin
Volume	70
DOIs	https://doi.org/10.1016/j.materresbull.2015.06.032
Publication status	Published - 14 Jul 2015

Keywords

A. Nitrides
B. Luminescence
C. Electron microscopy
C. X-ray diffraction
D. Surface properties

OECD Field of Science

2. Engineering and Technology

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10.1016/j.materresbull.2015.06.032

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title = "Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases",

abstract = "Gas sensing properties of hBN powder bulk and nanosize were studied. It was demonstrated that for hBN powders with grain sizes of 70 nm, 1 μm and 5 μm the native defect-induced luminescence observed at 400 nm under 265 nm light excitation and room temperature is sensitive to oxygen gas reducing luminescence intensity. The highest value of luminescence intensity is reached when sample is in vacuum. Results obtained allow conclusion that the hBN powder is prospective for sensing of oxygen gas. Some material properties such as dependence of luminescence intensity on vacuum level and pumping time, ratio of luminescence intensity when sample is in vacuum and gas, its dependence on material grain size were studied.",

keywords = "A. Nitrides, B. Luminescence, C. Electron microscopy, C. X-ray diffraction, D. Surface properties",

author = "V. Korsaks",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd",

year = "2015",

month = jul,

day = "14",

doi = "10.1016/j.materresbull.2015.06.032",

language = "English",

volume = "70",

pages = "976--979",

journal = "Materials Research Bulletin",

issn = "0025-5408",

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TY - JOUR

T1 - Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases

AU - Korsaks, V.

PY - 2015/7/14

Y1 - 2015/7/14

N2 - Gas sensing properties of hBN powder bulk and nanosize were studied. It was demonstrated that for hBN powders with grain sizes of 70 nm, 1 μm and 5 μm the native defect-induced luminescence observed at 400 nm under 265 nm light excitation and room temperature is sensitive to oxygen gas reducing luminescence intensity. The highest value of luminescence intensity is reached when sample is in vacuum. Results obtained allow conclusion that the hBN powder is prospective for sensing of oxygen gas. Some material properties such as dependence of luminescence intensity on vacuum level and pumping time, ratio of luminescence intensity when sample is in vacuum and gas, its dependence on material grain size were studied.

AB - Gas sensing properties of hBN powder bulk and nanosize were studied. It was demonstrated that for hBN powders with grain sizes of 70 nm, 1 μm and 5 μm the native defect-induced luminescence observed at 400 nm under 265 nm light excitation and room temperature is sensitive to oxygen gas reducing luminescence intensity. The highest value of luminescence intensity is reached when sample is in vacuum. Results obtained allow conclusion that the hBN powder is prospective for sensing of oxygen gas. Some material properties such as dependence of luminescence intensity on vacuum level and pumping time, ratio of luminescence intensity when sample is in vacuum and gas, its dependence on material grain size were studied.

KW - A. Nitrides

KW - B. Luminescence

KW - C. Electron microscopy

KW - C. X-ray diffraction

KW - D. Surface properties

UR - https://www.scopus.com/pages/publications/84937597862

U2 - 10.1016/j.materresbull.2015.06.032

DO - 10.1016/j.materresbull.2015.06.032

M3 - Article

AN - SCOPUS:84937597862

SN - 0025-5408

VL - 70

SP - 976

EP - 979

JO - Materials Research Bulletin

JF - Materials Research Bulletin

M1 - 8289

ER -

Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases

Abstract

Keywords

OECD Field of Science

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