Synthesis and Photoluminescence characterization of Sr3La(AlO)3(BO3)4:Eu3+,Sm3+ Phosphor for W-LED

Р.М. Єроджвар; Н.С. Кокоде; К.М. Нанданвар; Д.К. Інголе

doi:10.15330/pcss.24.1.202-207

Автор(и)

Р.М. Єроджвар Університет Гондвани, Махараштра, Індія
Н.С. Кокоде Університет Гондвани, Махараштра, Індія
К.М. Нанданвар Університет Гондвани, Махараштра, Індія
Д.К. Інголе Університет Гондвани, Махараштра, Індія

DOI:

https://doi.org/10.15330/pcss.24.1.202-207

Ключові слова:

легування рідкісноземельними елементами, горіння, w-LED, CIE-координація, Sr3La(AlO)3(BO3)4:Eu3, Sr3La(AlO)3(BO3)4:Sm3, червоний люмінофор

Анотація

Методом спалювання синтезовано високоефективні люмінофори Sr₃La(AlO)₃(BO₃)₄, леговані Eu³⁺ і Sm³⁺, збуджені червоним світлом, а також детально досліджено фотолюмінесцентні властивості зразків. Вивчено морфологію за допомогою скануючої електронної мікроскопії та хроматичність за допомогою CIE. Результати демонструють діапазони збудження від 340 нм до 420 нм, особливо, найсильніше збудження (394 нм і 406 нм) знаходиться в УФ-області при допуванні Eu³⁺ і Sm³⁺, що свідчить про те, що люмінофор може добре поєднуватися зі світлодіодними чіпами. Під дією n-УФ-світла 394 нм люмінофор Sr₃La(AlO)₃(BO₃)₄, легований Eu³⁺, і 406 нм Sm³⁺, легований Sr₃La(AlO)₃(BO₃)₄, може випромінювати яскраво-червоне світло з основними піками випромінювання, розташованими на 617 нм і 602 нм. Властивості ФЛ вказують на чудову стабільність люмінофора. Ці результати вказують на важливість червоних люмінофорів Sr₃La(AlO)₃(BO₃)₄: Eu³⁺ і Sr₃La(AlO)₃(BO₃)₄: Sm³⁺ у білих світлодіодах при n-УФ-збудженні.

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