Luminiscences procesi ar erbiju aktivētā bārija lutēcija fluorīdā un to atkarība no temperatūras un erbija jonu koncentrācijas

6533b855fe1ef96bd12b0286

RESEARCH PRODUCT

Luminiscences procesi ar erbiju aktivētā bārija lutēcija fluorīdā un to atkarība no temperatūras un erbija jonu koncentrācijas

Elīna Pavlovska

subject

luminiscence Fizika retzemju elementi temperatūras atkarības luminiscences kinētikas

description

Šajā darbā tiek apskatītas Ba4Lu3F17:Er3+ spektroskopiskās īpašības un to atkarības no temperatūras (8-300K) un aktivatoru jonu, Er3+, koncentrācijas (1, 10 un 40 mol%). Sintezētajiem pulverveida paraugiem tika izmērīti luminiscences un augšup-pārveidotās luminiscences spektri dažādās temperatūrās, ierosinot ar starojumu redzamajā un infrasarkanajā spektra diapazonā. Vietas jūtīgā spektroskopija ļauj noteikt, ka Er3+ atrodas dažādās pozīcijās Ba4Lu3F17 kristāliskajā struktūrā. Mainoties parauga temperatūrai, tiek novērotas izmaiņas luminiscences joslu platumā un intensitātē. Zaļajai Er3+ luminiscences joslai tiek uzņemtas luminiscences dzišanas kinētikas un to atkarība no parauga temperatūras. Balstoties uz iegūtajiem eksperimentālajiem datiem, darbā tiks spriests par luminiscences procesiem Ba4Lu3F17:Er3+ un kā tos ietekmē materiāla temperatūra un Er3+ koncentrācija.

year	journal	country	edition	language
2018-01-01

https://dspace.lu.lv/dspace/handle/7/38906

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