[16p-213-1~14] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

[16p-213-10] Photoluminescence Decay Curves and Quantum Cutting Properties of Tb³⁺/Yb³⁺ co-doped ZrO₂-SiO₂ Nanocrystalized Glasses

〇Tomokatsu Hayakawa¹, Masato Isogai¹, Jean Rene Duclere², Philippe Thomas² (1.Nagoya Inst. Tech., 2.Limoges Unv.)

Keywords:nanocrystalized glasses, quantum cutting, energy transfer

Down-conversion (DC) materials converted visible light to near-infrared light are a promising tool to enhance the efficiency of crystalline silicon solar cells. In this study, the wave conversion properties in Tb³⁺/Yb³⁺ -codoped ZrO₂-SiO₂ nano-crystallized glasses are investigated. The materials were synthesized by a sol-gel method, followed by heat-treatment at different temperatures (900°C, 1000°C, 1100°C) and characterized using DC luminescence spectra and Tb³⁺ luminescence decay curves. As a result, it was found that the energy transfer efficiency (ETE) from Tb³⁺ to Yb³⁺ increased with rising heat-treatment temperatures.