{"title":"Light extraction enhancement analysis of GaN-based LED with surface spherical crown array","authors":"Xiaomin Wang, Kang Li, F. Kong, Zhenming Zhang","doi":"10.1109/NUSOD.2012.6316492","DOIUrl":null,"url":null,"abstract":"For promoting the light extraction efficiency (LEE) of GaN-LED with nano-spherical hexagonal arrays, finite-difference time-domain (FDTD) method was used for optimizing the structure parameters such as spherical radius and height. The LEE of GaN spherical crown hexagonal array with 473nm radius and 250nm height over the LED surface exhibited 5.7 times enhancement than that of the planar LED, better than the LEE of whole-sphere array and pure-hemisphere array both.","PeriodicalId":337826,"journal":{"name":"2012 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"679 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NUSOD.2012.6316492","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
For promoting the light extraction efficiency (LEE) of GaN-LED with nano-spherical hexagonal arrays, finite-difference time-domain (FDTD) method was used for optimizing the structure parameters such as spherical radius and height. The LEE of GaN spherical crown hexagonal array with 473nm radius and 250nm height over the LED surface exhibited 5.7 times enhancement than that of the planar LED, better than the LEE of whole-sphere array and pure-hemisphere array both.
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