Insight into the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response in chemically grown ZnO/Al2O3 films
We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-reso...
Ausführliche Beschreibung
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| Autor*in: |
Agrawal, Arpana [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Rechteinformationen: |
Nutzungsrecht: © Author(s) |
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| Übergeordnetes Werk: |
Enthalten in: Journal of applied physics - Melville, NY : AIP, 1937, 122(2017), 19 |
|---|---|
| Übergeordnetes Werk: |
volume:122 ; year:2017 ; number:19 |
| Links: |
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| DOI / URN: |
10.1063/1.4993057 |
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| 520 | |a We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-resonant regime using a CW He-Ne laser source to examine the role of the intermediate bandgap states. It has been observed that the structural defects strongly influence the optical nonlinearity in the off-resonant regime. Nonlinearity has been found to improve as the oxygen flow rate is lowered from 2 sccm to 0.3 sccm. From photoluminescence studies, we observe that the enhanced defect density of the electronic defect levels due to the increased concentration of structural defects (with the decrease in the oxygen flow rate) is responsible for this improved optical nonlinearity along with the thermal effect. This suggests that defect engineering is an effective way to tailor the nonlinearity of ZnO films and their utility for optoelectronic device applications. | ||
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| 700 | 1 | |a Saroj, Rajendra K |4 oth | |
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| 700 | 1 | |a Baraskar, Priyanka |4 oth | |
| 700 | 1 | |a Sen, Pratima |4 oth | |
| 700 | 1 | |a Dhar, Subhabrata |4 oth | |
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10.1063/1.4993057 doi PQ20171228 (DE-627)OLC1999128850 (DE-599)GBVOLC1999128850 (PRQ)s716-1d9a74367b1542d59ffec35786930b047d08983dce22d235c94759b990279de00 (KEY)0076740920170000122001900000insightintotheeffectofscrewdislocationsandoxygenva DE-627 ger DE-627 rakwb eng 530 DE-600 Agrawal, Arpana verfasserin aut Insight into the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response in chemically grown ZnO/Al2O3 films 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-resonant regime using a CW He-Ne laser source to examine the role of the intermediate bandgap states. It has been observed that the structural defects strongly influence the optical nonlinearity in the off-resonant regime. Nonlinearity has been found to improve as the oxygen flow rate is lowered from 2 sccm to 0.3 sccm. From photoluminescence studies, we observe that the enhanced defect density of the electronic defect levels due to the increased concentration of structural defects (with the decrease in the oxygen flow rate) is responsible for this improved optical nonlinearity along with the thermal effect. This suggests that defect engineering is an effective way to tailor the nonlinearity of ZnO films and their utility for optoelectronic device applications. Nutzungsrecht: © Author(s) Saroj, Rajendra K oth Dar, Tanveer A oth Baraskar, Priyanka oth Sen, Pratima oth Dhar, Subhabrata oth Enthalten in Journal of applied physics Melville, NY : AIP, 1937 122(2017), 19 (DE-627)129079030 (DE-600)3112-4 (DE-576)014411652 0021-8979 nnns volume:122 year:2017 number:19 http://dx.doi.org/10.1063/1.4993057 Volltext http://dx.doi.org/10.1063/1.4993057 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_59 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2279 GBV_ILN_4319 AR 122 2017 19 |
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Insight into the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response in chemically grown ZnO/Al2O3 films |
| abstract |
We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-resonant regime using a CW He-Ne laser source to examine the role of the intermediate bandgap states. It has been observed that the structural defects strongly influence the optical nonlinearity in the off-resonant regime. Nonlinearity has been found to improve as the oxygen flow rate is lowered from 2 sccm to 0.3 sccm. From photoluminescence studies, we observe that the enhanced defect density of the electronic defect levels due to the increased concentration of structural defects (with the decrease in the oxygen flow rate) is responsible for this improved optical nonlinearity along with the thermal effect. This suggests that defect engineering is an effective way to tailor the nonlinearity of ZnO films and their utility for optoelectronic device applications. |
| abstractGer |
We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-resonant regime using a CW He-Ne laser source to examine the role of the intermediate bandgap states. It has been observed that the structural defects strongly influence the optical nonlinearity in the off-resonant regime. Nonlinearity has been found to improve as the oxygen flow rate is lowered from 2 sccm to 0.3 sccm. From photoluminescence studies, we observe that the enhanced defect density of the electronic defect levels due to the increased concentration of structural defects (with the decrease in the oxygen flow rate) is responsible for this improved optical nonlinearity along with the thermal effect. This suggests that defect engineering is an effective way to tailor the nonlinearity of ZnO films and their utility for optoelectronic device applications. |
| abstract_unstemmed |
We report the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response of ZnO films grown on a sapphire substrate at various oxygen flow rates using the chemical vapor deposition technique. The nonlinear refraction response was investigated in the off-resonant regime using a CW He-Ne laser source to examine the role of the intermediate bandgap states. It has been observed that the structural defects strongly influence the optical nonlinearity in the off-resonant regime. Nonlinearity has been found to improve as the oxygen flow rate is lowered from 2 sccm to 0.3 sccm. From photoluminescence studies, we observe that the enhanced defect density of the electronic defect levels due to the increased concentration of structural defects (with the decrease in the oxygen flow rate) is responsible for this improved optical nonlinearity along with the thermal effect. This suggests that defect engineering is an effective way to tailor the nonlinearity of ZnO films and their utility for optoelectronic device applications. |
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| container_issue |
19 |
| title_short |
Insight into the effect of screw dislocations and oxygen vacancy defects on the optical nonlinear refraction response in chemically grown ZnO/Al2O3 films |
| url |
http://dx.doi.org/10.1063/1.4993057 |
| remote_bool |
false |
| author2 |
Saroj, Rajendra K Dar, Tanveer A Baraskar, Priyanka Sen, Pratima Dhar, Subhabrata |
| author2Str |
Saroj, Rajendra K Dar, Tanveer A Baraskar, Priyanka Sen, Pratima Dhar, Subhabrata |
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129079030 |
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| doi_str |
10.1063/1.4993057 |
| up_date |
2024-07-04T06:26:13.404Z |
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