Photonics Research, 2019, 7 (8): 08000B55, Published Online: Jul. 29, 2019  

Review of encapsulation materials for AlGaN-based deep-ultraviolet light-emitting diodes Download: 1064次

Author Affiliations
UV Craftory Co., Ltd., 2-305, Fujimidai 2-7-2, Chikusa-ku, Nagoya 464-0015, Japan
Abstract
This paper reviews and introduces the techniques for boosting the light-extraction efficiency (LEE) of AlGaN-based deep-ultraviolet (DUV: λ<300 nm) light-emitting diodes (LEDs) on the basis of the discussion of their molecular structures and optical characteristics, focusing on organoencapsulation materials. Comparisons of various fluororesins, silicone resin, and nonorgano materials are described. The only usable organomaterial for encapsulating DUV-LEDs is currently considered to be polymerized perfluoro(4-vinyloxy-1-butene) (p-BVE) terminated with a CF3 end group. By forming hemispherical lenses on DUV-LED dies using p-BVE having a CF3 end group with a refractive index of about 1.35, the LEE was improved by 1.5-fold, demonstrating a cost-feasible packaging technique.

Yosuke Nagasawa, Akira Hirano. Review of encapsulation materials for AlGaN-based deep-ultraviolet light-emitting diodes[J]. Photonics Research, 2019, 7(8): 08000B55.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!