Micro-scale roughening of glass substrates using carbon nanotube-driven templates for enhancements in white luminescence characteristics

A novel way of roughening the surface of a glass substrate using a carbon nanotube-driven template is introduced to enhance the white luminescence characteristics of a printed (Ba,Sr,Ca) SiO :Eu yellow silicate phosphor layer. The distribution of closed pores in the template layer induces selective...

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Bibliographic Details
Published in:Optics letters 2017-12, Vol.42 (24), p.5094-5097
Main Authors: Jang, Jin Woo, Kwon, Oh Hyeon, Kim, Jun Sik, Kim, Yuri, Cho, Yong Soo
Format: Article
Language:English
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Summary:A novel way of roughening the surface of a glass substrate using a carbon nanotube-driven template is introduced to enhance the white luminescence characteristics of a printed (Ba,Sr,Ca) SiO :Eu yellow silicate phosphor layer. The distribution of closed pores in the template layer induces selective etching and micro-scale roughening. As a result, a substantial improvement of ∼22.5% in the luminous efficacy was achieved when both sides of the substrate were roughened. This is attributed to the reductions of both the total internal reflection of rays at the glass-air interface and the specular reflection at the phosphor-glass interface.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.42.005094