Luminescent Transparent Wood for Diffusive White Light Generation
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Updated: Jul 2, 2026

Synthesis of Persistent Luminescent Nanoparticles for Rewritable Displays and Illumination Applications
Published on: September 13, 2024
Francesco Bolognesi1,2, Seyed Ehsan Hadi1, Vivek Richards Pakkam Gabriel1
1Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, Stockholm 10044, Sweden.
Abstract:
Diffused white light is generated from a single-layer transparent wood (TW) composite incorporating a mixture of green and red CdSe/ZnS quantum dots (QDs) under blue light-emitting diode (LED) excitation. Unlike conventional multilayer or single-emitter systems, a simple codispersion strategy is used in which multiple QDs are incorporated within a single TW layer. Notably, no blue-emitting QDs are required. The QD-TW composites show excellent mechanical properties. The 0.6 mm thick composite shows high optical transmittance, strong haze, and a quantum yield of 42%. Under UV-blue excitation, the composite produces homogeneous white light through the combined contributions of QD emission and TW light scattering. TW can serve as a sustainable, mechanically robust platform for multicolor emitters and provide glare-free, uniform illumination.
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