Dy3+ Katkılı BaB4O7 Bileşiğinin Sentezlenmesi ve Optiksel Özelliklerinin Araştırılması

Bu çalışmada disprosyum (Dy3+) katkılı baryum tetraborat (BaB4O7) bileşikleri katı hal sentez, mikrodalga yardımlı ve yüksek sıcaklık katı hal sentez metotları kullanılarak üretildiler. Bileşiklerin kristal yapısı, morfolojisi, kimyasal bağ oluşumları, Fotolüminesans (PL) ve Radyolüminesans (RL) özellikleri sırasıyla X ışınları toz kırınımı (XRD), taramalı elektron mikroskobu (SEM), Fourier Transform Infrared Spektroskopisi (FTIR), flüoresans ve X-ışını Lüminesans spektrometreler yardımıyla araştırılmıştır. Termal davranışın karakterize edilmesinde Diferansiyel-Termogravimetrik (DTA/TGA) termal analiz kullanılmıştır. XRD desenleri katkısız ve Dy3+ katkılı BaB4O7 bileşiklerin başarılı bir şekilde sentezlendiğini göstermektedir. FTIR sonuçları baryum tetraboratın sahip olduğu düzlemsel borat yapısını desteklemiştir. Dy3+ katkılı BaB4O7 bileşiklerinin fotolüminesans ışıma spektrumu 351 nm’de uyarılarak 430-700 nm bölgesinde üç ışıma bandı kaydedilmiştir. Dy3+ metal iyonunun muhtemel olan mavi ışıma 4F9/26H15/2 (463 nm), sarı ışıma 4F9/26H13/2 (575 nm) ve zayıf pik 4F9/26H11/2 (683 nm) enerji geçişleri gözlenmiştir. Radyolüminesans spektrumları Dy3+ metal iyonuna ait enerji geçişlerini ve fotolüminesans spektrum sonuçlarını desteklemiştir.

Synthesis and Investigation of Optical Properties of Dy3+ Doped BaB4O7 Compound

In this study, dysporsium (Dy3+) doped barium tetraborate (BaB4O7) compounds produced using solid-state synthesis, microwave-assisted, and high-temperature solid-state synthesis methods. The crystal structure, morphology, chemical bond formation, Photoluminescence (PL), and Radioluminescence (RL) properties of all synthesized compounds were investigated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Fluorescence, and X-Ray Luminescence spectrometers respectively. Differential-Thermogravimetric (DTA/TGA) thermal analysis was used to characterize the thermal behavior. XRD patterns show that undoped and Dy3+ doped BaB4O7 compounds were successfully synthesized. FTIR spectra of the barium tetraborate support the formation of planar borate units. Results shows emission spectra of Dy3+ doped BaB4O7 compounds upon 351 nm excitation. The phosphors emitted three bands in 430-700 nm region at this excitation wavelength. The blue emission (463nm) corresponds to 4F9/26H15/2 transition, the yellow emission (575 nm) is associated with 4F9/26H13/2 transition, and the weak peak (683 nm) is related to the transition from 4F9/26H11/2 (665 nm). Radioluminescence spectra supported the energy transitions of Dy3+ metal ion and photoluminescence spectrum results.

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