Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering

C. L. Heng; E. Chelomentsev; Z. L. Peng; P. Mascher; P. J. Simpson

doi:10.1063/1.3063807

Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering

C. L. Heng, E. Chelomentsev, Z. L. Peng, P. Mascher, P. J. Simpson

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Abstract

We have investigated the nature of violet-blue emission from (Ge, Er) codoped Si oxides (Ge+Er+ SiO₂) using photoluminescence (PL) and positron annihilation spectroscopy (PAS) measurements. The PL spectra and PAS analysis for a control Ge-doped SiO₂ (Ge+ SiO₂) indicate that Ge-associated neutral oxygen vacancies (Ge-NOV) are likely responsible for the major emission in the violet-blue band. For Ge+Er+ SiO₂, both Ge-NOV and GeO color centers are believed to be responsible for the emission band. The addition of Er has a significant influence on the emission, which is discussed in terms of Er-concentration-related structural change in the Ge+Er+ SiO₂.

Original language	English
Article number	014312
Journal	Journal of Applied Physics
Volume	105
Issue number	1
DOIs	https://doi.org/10.1063/1.3063807
Publication status	Published - 2009
Externally published	Yes

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title = "Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering",

abstract = "We have investigated the nature of violet-blue emission from (Ge, Er) codoped Si oxides (Ge+Er+ SiO2) using photoluminescence (PL) and positron annihilation spectroscopy (PAS) measurements. The PL spectra and PAS analysis for a control Ge-doped SiO2 (Ge+ SiO2) indicate that Ge-associated neutral oxygen vacancies (Ge-NOV) are likely responsible for the major emission in the violet-blue band. For Ge+Er+ SiO2, both Ge-NOV and GeO color centers are believed to be responsible for the emission band. The addition of Er has a significant influence on the emission, which is discussed in terms of Er-concentration-related structural change in the Ge+Er+ SiO2.",

author = "Heng, {C. L.} and E. Chelomentsev and Peng, {Z. L.} and P. Mascher and Simpson, {P. J.}",

year = "2009",

doi = "10.1063/1.3063807",

language = "English",

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journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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T1 - Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering

AU - Heng, C. L.

AU - Chelomentsev, E.

AU - Peng, Z. L.

AU - Mascher, P.

AU - Simpson, P. J.

PY - 2009

Y1 - 2009

N2 - We have investigated the nature of violet-blue emission from (Ge, Er) codoped Si oxides (Ge+Er+ SiO2) using photoluminescence (PL) and positron annihilation spectroscopy (PAS) measurements. The PL spectra and PAS analysis for a control Ge-doped SiO2 (Ge+ SiO2) indicate that Ge-associated neutral oxygen vacancies (Ge-NOV) are likely responsible for the major emission in the violet-blue band. For Ge+Er+ SiO2, both Ge-NOV and GeO color centers are believed to be responsible for the emission band. The addition of Er has a significant influence on the emission, which is discussed in terms of Er-concentration-related structural change in the Ge+Er+ SiO2.

AB - We have investigated the nature of violet-blue emission from (Ge, Er) codoped Si oxides (Ge+Er+ SiO2) using photoluminescence (PL) and positron annihilation spectroscopy (PAS) measurements. The PL spectra and PAS analysis for a control Ge-doped SiO2 (Ge+ SiO2) indicate that Ge-associated neutral oxygen vacancies (Ge-NOV) are likely responsible for the major emission in the violet-blue band. For Ge+Er+ SiO2, both Ge-NOV and GeO color centers are believed to be responsible for the emission band. The addition of Er has a significant influence on the emission, which is discussed in terms of Er-concentration-related structural change in the Ge+Er+ SiO2.

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DO - 10.1063/1.3063807

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SN - 0021-8979

VL - 105

JO - Journal of Applied Physics

JF - Journal of Applied Physics

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ER -

Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering

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