Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Thermoluminescence and Photostimulated Luminescence of BaFBr:BaFBr:Eu2+ Phosphor

BaFBr:Eu2+ 형광체의 열발광 및 광자극발광 특성

  • Published : 2002.09.30
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Abstract

BaFBr:$Eu^{2+}$ phosphors were prepared, and the thermoluminescence(TL) and photostimulated luminescence(PSL) of the prepared phosphors were measured. Two glow peaks around 352 and 448 K are observed for x-ray irradiated BaFBr:$Eu^{2+}$ phosphors, and the activation energy of the main glow peak(352 K) was about 0.96 eV. The spectral range of the PSL was $350{\sim}450\;nm$, and the activation energy of the trap giving rise to PSL was about 0.98 eV. The activation energy of the traps giving rise to TL is agreed to those giving rise to PSL within experimental error.

BaFBr:$Eu^{2+}$ 형광체를 제조하고, 이 형광체의 열발광 특성과 광자극발광 특성을 조사하였다. 이 형광체의 열발광 glow 피이크 온도는 35 K와 448 K였으며, 주 피이크(352 K)에 관여하는 트랩의 활성화에너지는 약 0.96 eV이었다. 또한 이 형광체의 광자극발광 스펙트럼의 파장범위는 $350{\sim}450\;nm$ 사이였으며, 광자극발광에 기여하는 트랩의 활성화에너지는 약 0.98 eV이었다. 열발광트랩과 광자극발광 트랩의 활성화에너지는 실험오차 내에서 일치하였다.

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