The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes
In this work, nitrogen-doped ZnO nanoparticles were synthesized in various conditions by the gas evaporation method with DC arc plasma. Nitrogen concentrations of 6.38 × 10<sup>18</sup> cm<sup>−3</sup> to 2.6 × 10<sup>19</sup> cm<sup>−3</sup> were obta...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/3/358 |
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| author | Islam Mohammad Shafiqul Raj Deep Jie Lin Toshiyuki Yoshida Yasuhisa Fujita |
| author_facet | Islam Mohammad Shafiqul Raj Deep Jie Lin Toshiyuki Yoshida Yasuhisa Fujita |
| author_sort | Islam Mohammad Shafiqul |
| collection | DOAJ |
| description | In this work, nitrogen-doped ZnO nanoparticles were synthesized in various conditions by the gas evaporation method with DC arc plasma. Nitrogen concentrations of 6.38 × 10<sup>18</sup> cm<sup>−3</sup> to 2.6 × 10<sup>19</sup> cm<sup>−3</sup> were obtained at a chamber pressure of 150 torr, using arc currents of 20 A to 70 A. The intensities of local vibrational modes at 275 cm<sup>−1</sup> and 581 cm<sup>−1</sup> in the Raman spectra of ZnO nanoparticles showed a dependency on the nitrogen concentration in the ZnO nanoparticles. The ratios of donor–acceptor pair and exciton emissions in the photoluminescence spectra of nitrogen-doped ZnO nanoparticles, and the electroluminescence of light-emitting diodes based on these nanoparticles, were nearly proportional to the Raman peak’s intensity at 275 cm<sup>−1</sup>. The results indicated that the nitrogen dopants in the ZnO nanoparticles were acting as an acceptor. |
| first_indexed | 2024-03-09T23:25:51Z |
| format | Article |
| id | doaj.art-ed21d8e4e9d3448b87cd9709ffa07283 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T23:25:51Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-ed21d8e4e9d3448b87cd9709ffa072832023-11-23T17:19:28ZengMDPI AGNanomaterials2079-49912022-01-0112335810.3390/nano12030358The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting DiodesIslam Mohammad Shafiqul0Raj Deep1Jie Lin2Toshiyuki Yoshida3Yasuhisa Fujita4Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, JapanGraduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, JapanS-Nanotech Co-Creation Co., Ltd., 1060 Nishikawatsu, Matsue 690-0823, JapanGraduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, JapanGraduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, JapanIn this work, nitrogen-doped ZnO nanoparticles were synthesized in various conditions by the gas evaporation method with DC arc plasma. Nitrogen concentrations of 6.38 × 10<sup>18</sup> cm<sup>−3</sup> to 2.6 × 10<sup>19</sup> cm<sup>−3</sup> were obtained at a chamber pressure of 150 torr, using arc currents of 20 A to 70 A. The intensities of local vibrational modes at 275 cm<sup>−1</sup> and 581 cm<sup>−1</sup> in the Raman spectra of ZnO nanoparticles showed a dependency on the nitrogen concentration in the ZnO nanoparticles. The ratios of donor–acceptor pair and exciton emissions in the photoluminescence spectra of nitrogen-doped ZnO nanoparticles, and the electroluminescence of light-emitting diodes based on these nanoparticles, were nearly proportional to the Raman peak’s intensity at 275 cm<sup>−1</sup>. The results indicated that the nitrogen dopants in the ZnO nanoparticles were acting as an acceptor.https://www.mdpi.com/2079-4991/12/3/358ZnO nanoparticlesnitrogen dopingelectroluminescencephotoluminescencelight-emitting diodes |
| spellingShingle | Islam Mohammad Shafiqul Raj Deep Jie Lin Toshiyuki Yoshida Yasuhisa Fujita The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes Nanomaterials ZnO nanoparticles nitrogen doping electroluminescence photoluminescence light-emitting diodes |
| title | The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes |
| title_full | The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes |
| title_fullStr | The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes |
| title_full_unstemmed | The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes |
| title_short | The Role of Nitrogen Dopants in ZnO Nanoparticle-Based Light Emitting Diodes |
| title_sort | role of nitrogen dopants in zno nanoparticle based light emitting diodes |
| topic | ZnO nanoparticles nitrogen doping electroluminescence photoluminescence light-emitting diodes |
| url | https://www.mdpi.com/2079-4991/12/3/358 |
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