Tunable light emission of Bi and V-doped borosilicate glasses for application in white light-emitting diodes

Year: 2024

Type: article

Abstract: Melt-quenched borosilicate glasses, co-doped with Bi and V ions, exhibited broad visible spectrum emissions. Bi ions primarily existed as Bi, acting as network modifiers, lowering the glass transition temperature linearly with increasing Bi content. V ions adopted tetrahedral coordination as [VO] units. Photoluminescence of Bi ions is shifted from blue to longer wavelengths with higher Bi content, associated with the stabilization of Bi and the presence of Bi in different local environments. Combined with V ions, the glasses emitted light covering the entire visible spectrum, offering the potential for white LED applications with correlated color temperatures ranging from 6135 to 4010 K. The highest QY was 11.9 and 8.0 % upon excitation at 325 and 340 nm.

Source: Ceramics International

DOI: 10.1016/j.ceramint.2024.01.093

Authors: G. Gorni, C. Pérez, B. Wolfrum, J.J. Velázquez, Hana Kaňková, I. Llorente, I. Muñoz Ochando, R. Serna, J. Gonzalo

Institutions: Consejo Superior de Investigaciones Científicas, Instituto de Óptica "Daza de Valdés", Trencianska Univerzita Alexandra Dubceka V Trencine, Cenim - Centro Nacional de Investigaciones Metalurgicas, Instituto de Ciencia y Tecnología de Polímeros

Language: English

Topic: Glass properties and applications

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,440

Funders: Comunidad de Madrid, European Commission, Universidad Complutense de Madrid, Ministerio de Ciencia e Innovación, Fundación General CSIC, Consejo Superior de Investigaciones Científicas, Horizon 2020, European Regional Development Fund, Agencia Estatal de Investigación, Ontario Ministry of Research and Innovation, NextGenerationEU

OpenAlex ID: W4390742890