Title

UV-sensitized Sm3+ visible and near-IR photoluminescence in phosphate glass melted with multi-wall carbon nanotubes

Document Type

Article

Publication Date

10-15-2018

Subject Area

ARRAY(0x5559824798e8)

Abstract

Phosphate glass doped with Sm3+ ions was prepared by melting in ambient atmosphere with multi-wall carbon nanotubes (MWCNTs) added to batch materials to evaluate their impact on material optical properties. An enhanced UV transparency occurs similar to that of a glass melted just with MWCNTs. However, the glass melted only with MWCNT shows evidence of carbon-related luminescent defects, whereas the luminescence of these becomes suppressed in the Sm3+-doped glass melted with the MWCNTs. A comparison with the photoluminescence (PL) of a Sm3+-doped reference (i.e., not melted with MWCNTs) shows that addition of MWCNTs produces an improvement in Sm3+ PL in the visible and near-IR regions. The enhanced PL is observed for resonant excitation in the UV and non-resonantly under 300 nm excitation. It is suggested that the reduced host absorption contributes to the improved PL for resonant excitation of Sm3+ in the UV, while the non-resonant pathway may be related to an energy transfer from the luminescent defects produced in the host. It is the first time to our knowledge that this type of sensitized emission is reported.

Publication Title

Journal of Non-Crystalline Solids

Volume

498

First Page

455

Last Page

460

Digital Object Identifier (DOI)

10.1016/j.jnoncrysol.2018.02.001

ISSN

00223093

Share

COinS