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- 저자 : 문정학(J . H . Moon) (검색결과 2 건)
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LaAlO₃ 에 대한 열자극발광 스펙트럼의 광학적 분석
이정일(J . I . Lee),문정학(J . H . Moon),김덕훈(D . H . Kim) 한국안광학회 1999 한국안광학회지 Vol.4 No.2
We measured and analyzed thermoluminescence spectra of LaAlO₃, single crystal by 3 dimensional data for temperature, wavelength and luminescence intensity. LaAlO₃, has used as the substrates of YBCO(superconductor) or semiconductors. We could determined the energy of recombination center, that is impossible through analysis of glow curve data. We could obtained the energy through analysis of the spectrum data at peak temperature by Franck-Condon model. The total glow curve was deconvoluted to three glow curves by curve fitting method. The activation energies were 0.54eV, 0.91eV and 1.02eV respectively. The energies of recombination centers were determined with 2. 04eV and 2.75eV from the analysis of luminescence intensity data for wavelength.
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LiF : Mg , Cu , Na , Si TL 물질의 열자극발광스팩트럼 측정 및 분석
이정일(J . I . Lee),문정학(J . H . Moon),김덕훈(D . H . Kim) 한국안광학회 2001 한국안광학회지 Vol.6 No.1
Three-dimensional thermoluminescence(TL) spectra of LiF: Mg. Cu, Na. Si TL material based on temperature. wavelength and intensity were measured and analyzed. The glow curves were obtained by integration of luminescence intensity for wavelength at each temperature. and various trapping parameters related to the trap formation were determined by analyzing these curves. Computerized glow curve deconvolution(CGCD) method which based on general order kinetics(GOK) model were used for the glow curve analysis. The glow curves of LiF : Mg. Cu. Na, Si TL material were deconvoluted to six isolated glow curves which have peak temperature at 333 K. 374 K. 426 K. 466 K. 483 K and 516 K, respectively. The 466 K main glow peak had an activation energy of 2.06 eV and a kinetic order of 1.05. This TL material was also found to have three recombination centers. 1.80 eV, 2.88 eV and 3.27 eV by TL spectra analysis based on Franck-Condors model. It showed that 2.88 eV is the dominant center. followed by 3.27 eV level, and 1.80 eV center is ascertained as emission center of this material even though its very weak emission intensity.
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