The role of vacancies in the red luminescence from Mg-doped GaN
The red (1.8 eV) photoluminescence (PL) band often observed in Mg‐doped GaN has been suggested to be due to a recombination process involving vacancy‐related deep defects. To identify the defects concerned, optically‐detected magnetic resonance (ODMR) and positron annihilation spectroscopy (PAS) exp...
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| Veröffentlicht in: | Physica status solidi. C 2006-06, Vol.3 (6), p.1919-1922 |
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| container_end_page | 1922 |
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| container_issue | 6 |
| container_start_page | 1919 |
| container_title | Physica status solidi. C |
| container_volume | 3 |
| creator | Zeng, S. Aliev, G. N. Wolverson, D. Davies, J. J. Bingham, S. J. Abdulmalik, D. A. Coleman, P. G. Wang, T. Parbrook, P. J. |
| description | The red (1.8 eV) photoluminescence (PL) band often observed in Mg‐doped GaN has been suggested to be due to a recombination process involving vacancy‐related deep defects. To identify the defects concerned, optically‐detected magnetic resonance (ODMR) and positron annihilation spectroscopy (PAS) experiments have been combined. A correlation between the PL spectra, the ODMR signals and the PAS data has been observed in as‐grown layers as the magnesium doping level is increased. The experiments provide strong evidence that the origin of the red PL is recombination of electrons from both shallow and deep donors with holes at deep acceptors, the deep donors being complexes formed from nitrogen vacancies associated with substitutional magnesium ions and the deep acceptors being gallium vacancies or related centers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| doi_str_mv | 10.1002/pssc.200565331 |
| format | Article |
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The experiments provide strong evidence that the origin of the red PL is recombination of electrons from both shallow and deep donors with holes at deep acceptors, the deep donors being complexes formed from nitrogen vacancies associated with substitutional magnesium ions and the deep acceptors being gallium vacancies or related centers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</description><identifier>ISSN: 1862-6351</identifier><identifier>ISSN: 1610-1634</identifier><identifier>EISSN: 1610-1642</identifier><identifier>DOI: 10.1002/pssc.200565331</identifier><language>eng</language><publisher>Berlin: WILEY-VCH Verlag</publisher><subject>71.55.Eq ; 71.70.Fk ; 76.70.Hb ; 78.55.Cr ; 78.66.Fd</subject><ispartof>Physica status solidi. C, 2006-06, Vol.3 (6), p.1919-1922</ispartof><rights>Copyright © 2006 WILEY‐VCH Verlag GmbH & Co. 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The experiments provide strong evidence that the origin of the red PL is recombination of electrons from both shallow and deep donors with holes at deep acceptors, the deep donors being complexes formed from nitrogen vacancies associated with substitutional magnesium ions and the deep acceptors being gallium vacancies or related centers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</description><subject>71.55.Eq</subject><subject>71.70.Fk</subject><subject>76.70.Hb</subject><subject>78.55.Cr</subject><subject>78.66.Fd</subject><issn>1862-6351</issn><issn>1610-1634</issn><issn>1610-1642</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkL1PwzAUxC0EEqWwMntiS_GzYzuZEKqggEpBtIjRMskzBPKF3QL970kVVLExvZPufk-nI-QY2AgY46dtCNmIMyaVFAJ2yAAUsAhUzHc7nSgeKSFhnxyE8MaYkAzUgJwtXpH6pkTaOPppM1tnBQZa1HS5MTCn5aoqagwZ1hlS55uK3r5EedN21sTODsmes2XAo987JI-XF4vxVTS9m1yPz6dRJmQCkVM8B80lE-icTXMrE66cZjmyTHHBUYNIEysxEamTklubxs9S5XGuYs1SKYbkpP_b-uZjhWFpqqLrVJa2xmYVDE81SKV0Fxz1wcw3IXh0pvVFZf3aADObncxmJ7PdqQPSHvgqSlz_kzb38_n4Lxv1bBGW-L1lrX83XRUtzdNsYjTMbxRwMA_iBze4eZI</recordid><startdate>200606</startdate><enddate>200606</enddate><creator>Zeng, S.</creator><creator>Aliev, G. N.</creator><creator>Wolverson, D.</creator><creator>Davies, J. J.</creator><creator>Bingham, S. 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J.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica status solidi. C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zeng, S.</au><au>Aliev, G. N.</au><au>Wolverson, D.</au><au>Davies, J. J.</au><au>Bingham, S. J.</au><au>Abdulmalik, D. A.</au><au>Coleman, P. G.</au><au>Wang, T.</au><au>Parbrook, P. J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The role of vacancies in the red luminescence from Mg-doped GaN</atitle><jtitle>Physica status solidi. C</jtitle><addtitle>Phys. Status Solidi (c)</addtitle><date>2006-06</date><risdate>2006</risdate><volume>3</volume><issue>6</issue><spage>1919</spage><epage>1922</epage><pages>1919-1922</pages><issn>1862-6351</issn><issn>1610-1634</issn><eissn>1610-1642</eissn><abstract>The red (1.8 eV) photoluminescence (PL) band often observed in Mg‐doped GaN has been suggested to be due to a recombination process involving vacancy‐related deep defects. To identify the defects concerned, optically‐detected magnetic resonance (ODMR) and positron annihilation spectroscopy (PAS) experiments have been combined. A correlation between the PL spectra, the ODMR signals and the PAS data has been observed in as‐grown layers as the magnesium doping level is increased. The experiments provide strong evidence that the origin of the red PL is recombination of electrons from both shallow and deep donors with holes at deep acceptors, the deep donors being complexes formed from nitrogen vacancies associated with substitutional magnesium ions and the deep acceptors being gallium vacancies or related centers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/pssc.200565331</doi><tpages>4</tpages></addata></record> |
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| issn | 1862-6351 1610-1634 1610-1642 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | 71.55.Eq 71.70.Fk 76.70.Hb 78.55.Cr 78.66.Fd |
| title | The role of vacancies in the red luminescence from Mg-doped GaN |
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