Optical Properties of Lu3Al5O12:Ce(Er) nanocrystals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00638188" target="_blank" >RIV/68378271:_____/24:00638188 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Optical Properties of Lu3Al5O12:Ce(Er) nanocrystals

Original language description

Lutetium aluminum garnet (LuAG) is the crystal well known for extraordinary useful for building highly efficient laser devices or ionizing radiation detectors. To design the most favorable physical properties, different dopants and synthesis methods are constantly developed, primarily focused on advantages of single-crystals. However, downscaling of the luminescent materials to nanosize also creates additional benefits of increased surface to volume ratio and thus, the efficiency of luminescence can be improved. Therefore, the aim of this work is to compare influence of Ce and Er doping on optical properties of LuAG nanogarnets. Synergy of methods like X-ray diffraction (XRD), Raman, photoluminescence (PL) and photothermal deflection spectroscopies (PDS) were applied to the newly synthesized LuAG:Ce(Er) nanopowders. In particular, the pure LuAG shows only negligible PL around 625 and 650 nm originating from accidental defects. The LuAG:Ce nanocrystals emits at 450 and 650 nm. The former wavelength corresponds to the cerium typical 5d-4f transition. LuAG:Er has 5 peaks in infrared PL spectrum around 1460, 1530, 1580, 1620 and 1660 nm which are commonly known Er3+ transitions between Stark levels. According to XRD, the materials are pure phase garnets.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů