Published April 1, 2024 | Version v1
Journal Open

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

Authors/Creators

  • 1. Laser Processing Group, Institute of Optics (IO-CSIC), C/Serrano, 121, 2006, Madrid, Spain
  • 2. FunGlass – Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50, Trenčín, Slovakia
  • 3. Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Av. de Gregorio Del Amo, 8, 28040, Madrid, Spain
  • 4. Instituto de Ciencia y Tecnología de Polímeros (ICTP), Consejo Superior de Investigaciones Científicas (CSIC), 28006, Madrid, Spain

Description

Melt-quenched borosilicate glasses, co-doped with Bi and V ions, exhibited broad visible spectrum emissions. Bi
ions primarily existed as Bi3+, acting as network modifiers, lowering the glass transition temperature linearly
with increasing Bi content. V5+ ions adopted tetrahedral coordination as [VO4]3- units. Photoluminescence of Bi
ions is shifted from blue to longer wavelengths with higher Bi content, associated with the stabilization of Bi2+
and the presence of Bi3+ 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.

Files

Tunable light emission of Bi andV doped borosilicate glasses for application in white light emitting diodes.pdf

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Additional details

Funding

European Commission
Centre for Functional and Surface Functionalized Glass 739566

Dates

Available
2024-01-09