Extremely high current density over 1000 A/cm2 operation in m-plane GaN small size LEDs with low efficiency droop and method for controlling radiation pattern and polarization
{"title":"Extremely high current density over 1000 A/cm2 operation in m-plane GaN small size LEDs with low efficiency droop and method for controlling radiation pattern and polarization","authors":"A. Inoue, R. Kato, A. Yamada, T. Yokogawa","doi":"10.1109/IEDM.2012.6479114","DOIUrl":null,"url":null,"abstract":"A high current density over 1000 A/cm2 operation in a small chip size m-plane GaN-LED has been successfully demonstrated. The m-plane GaN-LED with a chip size 450 × 450 μm2 has emitted 1353 mW in a light output power and 39.2% in an external quantum efficiency (EQE) at 1000 A/cm2 (1134 mA). The m-plane GaN-LED has showed asymmetric radiation characteristics. The radiation patterns are controlled by the surface of LED packages, the height of the LED chips, and the striped texture on the top m-plane surface.","PeriodicalId":6376,"journal":{"name":"2012 International Electron Devices Meeting","volume":"52 1","pages":"27.3.1-27.3.4"},"PeriodicalIF":0.0000,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 International Electron Devices Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEDM.2012.6479114","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A high current density over 1000 A/cm2 operation in a small chip size m-plane GaN-LED has been successfully demonstrated. The m-plane GaN-LED with a chip size 450 × 450 μm2 has emitted 1353 mW in a light output power and 39.2% in an external quantum efficiency (EQE) at 1000 A/cm2 (1134 mA). The m-plane GaN-LED has showed asymmetric radiation characteristics. The radiation patterns are controlled by the surface of LED packages, the height of the LED chips, and the striped texture on the top m-plane surface.
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