A review and outlook of ratiometric optical thermometer based on thermally coupled levels and non-thermally coupled levels

Luminescence thermometry with transition metal ions. A review

CsPbX3(Cl, Br, I) perovskite quantum dot glass has been widely reported, and the discovery of next-generation perovskite luminescent materials has been challenged by doping rare earth activators with energy-level transitions. In this work, we report a novel Eu-doped quantum dot glass material with tunable luminescence properties. The structure characteristics and tunable luminescence mechanism were investigated by combining X-ray diffraction, X-ray photoelectric spectroscopy, excitation and emission spectra. It was found that Eu ions replaced the lattice of Pb in CsPbBr3 quantum dots and formed CsEuBr3 quantum dots, which resulted in a blue emission. Meanwhile, a green emission from CsPbBr3 quantum dots and a red emission originally from Eu3+ in the glass matrix can also be observed by controlling the heat treatment temperature. A light-emitting diode is designed based on the prepared Eu-doped quantum dot glass without doping any phosphors, and a warm light with CCT at 4075 K is obtained. The present work provides a new luminescence tunable design principle for europium-doped quantum dot glass materials and could inspire the future exploration of rare earth ion-doped quantum dot glass materials.

Nanocrystalline structure control and tunable luminescence mechanism of Eu-doped CsPbBr3 quantum dot glass for WLEDs.

Defect engineering in novel broad-band gap hexaaluminate MAl12O19 (M=Ca, sr, Ba)-Based photocatalysts Boosts Near ultraviolet and visible light-driven photocatalytic performance

Non-contact thermometry with dual-activator luminescence of Bi3+/Sm3+: YNbO4 phosphor

Temperature sensitive properties of Eu2+/Eu3+ dual-emitting LaAlO3 phosphors

High-sensitivity based on Eu2+/Cr3+ co-doped BaAl12O19 phosphors for dual-mode optical thermometry

In this paper, Eu2+/Mn2+ co-doped Ca 2 Sr(PO 4 ) 2 phosphors were synthesized by high temperature solid-state method. It was studied by X-ray diffraction, room temperature and high temperature photoluminescence spectra. The results show that an effective energy transfer is existed in this phosphors from Eu2+ to Mn2+. Eu2+ / Mn2+ co-doped Ca 2 Sr (PO 4 ) 2 phosphors have excellent optical temperature sensing properties. Two well-separated emission peaks which can be used as signal identification are exieted in emission spectrum. Absolute sensitivity and relative sensitivity are in direct proportion to temperature. Both absolute sensitivity and relative sensitivity can be improved at the same time. Therefore, Ca 2 Sr (PO 4 ) 2 : Eu2 +, Mn2 + has potential application prospect.

Temperature sensitive Properties of Eu 2+ / Mn 2+ Co-doped Ca 2 Sr (PO 4 ) 2

A high-sensitivity dual-mode optical thermometry based on one-step synthesis of Mn2+:BaAl12O19–Mn4+:SrAl12O19 solid solution phosphors

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Temperature sensitive properties of Eu2+/Eu3+ dual-emitting LaAlO3 phosphors

High-sensitivity based on Eu2+/Cr3+ co-doped BaAl12O19 phosphors for dual-mode optical thermometry

Temperature sensitive Properties of Eu 2+ / Mn 2+ Co-doped Ca 2 Sr (PO 4 ) 2

A high-sensitivity dual-mode optical thermometry based on one-step synthesis of Mn2+:BaAl12O19–Mn4+:SrAl12O19 solid solution phosphors