Emission enhancements in phosphor chips with surface gratings

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• 作者：Zhongyang Ge ; David Klotzkin ; ^{klotzkin@binghamton.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Solid state lighting ; Surface coating ; Extraction efficiency
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：181
• 期：Complete
• 页码：184-188
• 全文大小：3184 K

文摘

An oxide grating fabricated with standard microlithographic processes and patterned with interference lithography was fabricated on a solid LuAG:Ce³⁺ phosphor chip about 0.2 mm thick. Integrating sphere emission measurement shows an increase of 8.1% in the emission band from 520 to 550 nm, with the majority of the increase coming at steeper emission angles. This process may be a practical way to increase solid state lighting efficiency. This technique was effective even though the phosphor was not optically flat.