Optical Properties of Y2O3:Eu3+ Thin-Film Phosphors Coated with 2D SiNx/Air Photonic Crystal Layers

We determined the effects of varying the array lattice parameters of the nanorods of a two-dimensional (2D) SiNx photonic crystal (PC) layer on the efficiency of extraction of photoluminescence (PL) of the Y2O3:Eu3+ thin films, in which the interface between the phosphor layer and the air was modifi...

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Bibliographic Details
Published in:Electrochemical and solid-state letters 2007-01, Vol.10 (3), p.H82-H84
Main Authors: Lee, Young Kwang, Cho, Jun Yeol, Park, Chan Ryang, Huh, Young-Duk, Kim, Yoon-Chang, Do, Young Rag
Format: Article
Language:English
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Summary:We determined the effects of varying the array lattice parameters of the nanorods of a two-dimensional (2D) SiNx photonic crystal (PC) layer on the efficiency of extraction of photoluminescence (PL) of the Y2O3:Eu3+ thin films, in which the interface between the phosphor layer and the air was modified with a 2D SiNx PC pattern. The PL extraction was improved by a factor of over 3.7 compared to that of a conventional Y2O3:Eu3+ thin film by adding a PC array with a lattice constant of 600nm, a height of 200nm, and a filling ratio of 0.27. This improvement arises from the liberation of the photons trapped in the high-index guiding layers of the Y2O3:Eu3+ thin films.
ISSN:1099-0062
DOI:10.1149/1.2424270