Enhanced light extraction by optimizing surface microstructure for AlGaN-based deep ultraviolet light emitting diodes with 265 and 280 nm emission
In order to improve the light extraction for the deep ultraviolet light emitting diodes (DUV-LEDs), the surface microstructure based on a parabola cone array is used and optimized in work. In the optimization of the surface structure, inverse design based on a particle swarm optimization intelligent...
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| Veröffentlicht in: | Journal of applied physics 2022-12, Vol.132 (22) |
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| container_issue | 22 |
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| container_title | Journal of applied physics |
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| creator | Zhu, Yifan Lu, Huimin Wang, Jianping Yu, Tongjun Li, Zizheng Tian, Yucheng |
| description | In order to improve the light extraction for the deep ultraviolet light emitting diodes (DUV-LEDs), the surface microstructure based on a parabola cone array is used and optimized in work. In the optimization of the surface structure, inverse design based on a particle swarm optimization intelligent algorithm is applied to maximize the light extraction. The optimization results show that compared with the traditional planar structure, the optimized surface structure improves the light extraction efficiency by more than 200%. In addition, the influence of the designed surface microstructure on the light propagation is also explored by comparing the light field distribution and the light extraction process with the planar structure DUV-LEDs. It is revealed that the high aspect ratio of an array microstructure can change the light propagation and greatly expand the angle of a light escape cone. This effect can be maximized by the inverse design based on the intelligent algorithm, which has great potential in improving the light extraction of AlGaN-based DUV-LEDs. |
| doi_str_mv | 10.1063/5.0128213 |
| format | Article |
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In the optimization of the surface structure, inverse design based on a particle swarm optimization intelligent algorithm is applied to maximize the light extraction. The optimization results show that compared with the traditional planar structure, the optimized surface structure improves the light extraction efficiency by more than 200%. In addition, the influence of the designed surface microstructure on the light propagation is also explored by comparing the light field distribution and the light extraction process with the planar structure DUV-LEDs. It is revealed that the high aspect ratio of an array microstructure can change the light propagation and greatly expand the angle of a light escape cone. 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This effect can be maximized by the inverse design based on the intelligent algorithm, which has great potential in improving the light extraction of AlGaN-based DUV-LEDs.</description><subject>Algorithms</subject><subject>Applied physics</subject><subject>Arrays</subject><subject>Design optimization</subject><subject>High aspect ratio</subject><subject>Inverse design</subject><subject>Light emitting diodes</subject><subject>Microstructure</subject><subject>Optimization</subject><subject>Particle swarm optimization</subject><subject>Planar structures</subject><subject>Propagation</subject><subject>Surface structure</subject><subject>Ultraviolet radiation</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNqdkLtKA0EYhQdRMEYL32DASmHjXDJ7KSVoFII2Wi9zTSbs7qwzs9FY2dr7hD6Ju0Sxt_rh8PEd_gPAKUYTjFJ6ySYIk5xgugdGGOVFkjGG9sEIIYKTvMiKQ3AUwhohjHNajMDndbPijdQKVna5ilC_Rs9ltK6BYgtdG21t32yzhKHzhksNayu9C9F3MnZeQ-M8vKrm_D4RPPQWpXULu6qXbKyrdPzV1jbGQaOsUzrAFxtXkKQM8kZBkqOv94-mHqgQ-upjcGB4FfTJzx2Dp5vrx9ltsniY382uFokkLItJSkTOi4woI5gwGKd8KrHIjTAI0ZRik2piqFEkEznKDOGMSSaylCnZJ8bQMTjbeVvvnjsdYrl2nW_6ypJkjE5JOi1YT53vqOHx4LUpW29r7rclRuUwesnKn9F79mLHBmkjH2b8H7xx_g8sW2XoNx4Uk2Y</recordid><startdate>20221214</startdate><enddate>20221214</enddate><creator>Zhu, Yifan</creator><creator>Lu, Huimin</creator><creator>Wang, Jianping</creator><creator>Yu, Tongjun</creator><creator>Li, Zizheng</creator><creator>Tian, Yucheng</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-8595-7351</orcidid><orcidid>https://orcid.org/0000-0001-8139-8660</orcidid><orcidid>https://orcid.org/0000-0002-0114-8918</orcidid><orcidid>https://orcid.org/0000-0001-5156-0313</orcidid><orcidid>https://orcid.org/0000-0002-8729-9185</orcidid><orcidid>https://orcid.org/0000-0001-5053-5036</orcidid></search><sort><creationdate>20221214</creationdate><title>Enhanced light extraction by optimizing surface microstructure for AlGaN-based deep ultraviolet light emitting diodes with 265 and 280 nm emission</title><author>Zhu, Yifan ; Lu, Huimin ; Wang, Jianping ; Yu, Tongjun ; Li, Zizheng ; Tian, Yucheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c257t-62b8a972dfb5bf116a4c1b8fbf003631f6e2f3fd27b807f2a55c5b765dc7b8ff3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Algorithms</topic><topic>Applied physics</topic><topic>Arrays</topic><topic>Design optimization</topic><topic>High aspect ratio</topic><topic>Inverse design</topic><topic>Light emitting diodes</topic><topic>Microstructure</topic><topic>Optimization</topic><topic>Particle swarm optimization</topic><topic>Planar structures</topic><topic>Propagation</topic><topic>Surface structure</topic><topic>Ultraviolet radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhu, Yifan</creatorcontrib><creatorcontrib>Lu, Huimin</creatorcontrib><creatorcontrib>Wang, Jianping</creatorcontrib><creatorcontrib>Yu, Tongjun</creatorcontrib><creatorcontrib>Li, Zizheng</creatorcontrib><creatorcontrib>Tian, Yucheng</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhu, Yifan</au><au>Lu, Huimin</au><au>Wang, Jianping</au><au>Yu, Tongjun</au><au>Li, Zizheng</au><au>Tian, Yucheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced light extraction by optimizing surface microstructure for AlGaN-based deep ultraviolet light emitting diodes with 265 and 280 nm emission</atitle><jtitle>Journal of applied physics</jtitle><date>2022-12-14</date><risdate>2022</risdate><volume>132</volume><issue>22</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>In order to improve the light extraction for the deep ultraviolet light emitting diodes (DUV-LEDs), the surface microstructure based on a parabola cone array is used and optimized in work. 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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Algorithms Applied physics Arrays Design optimization High aspect ratio Inverse design Light emitting diodes Microstructure Optimization Particle swarm optimization Planar structures Propagation Surface structure Ultraviolet radiation |
| title | Enhanced light extraction by optimizing surface microstructure for AlGaN-based deep ultraviolet light emitting diodes with 265 and 280 nm emission |
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