H
H. L. Park
Researcher at Yonsei University
Publications - 207
Citations - 1959
H. L. Park is an academic researcher from Yonsei University. The author has contributed to research in topics: Photoluminescence & Thin film. The author has an hindex of 22, co-authored 201 publications receiving 1845 citations. Previous affiliations of H. L. Park include KITECH.
Papers
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Emission color variation of M2SiO4:Eu2+ (M=Ba, Sr, Ca) phosphors for light-emitting diode
TL;DR: In this paper, the luminescent properties of alkaline earth orthosilicates M2SiO4 (M=Ba, Sr, Ca) doped with Eu2+ ions are investigated.
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The origin of emission color of reduced and oxidized ZnGa2O4 phosphors
TL;DR: In this paper, the Ga-O octahedral structure of the reduced and oxidized ZnGa2O4 phosphors was investigated using Reitveld refinement, and the correlation between the structural change and the changing emission color was studied.
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Emission color tuning from blue to green through cross-relaxation in heavily Tb3+-doped YAlO3
TL;DR: In this paper, the emission color tuning of YAlO3:Tbx3+ has been investigated by using cathodoluminescence (CL) measurements, and the results indicate that YO3 can be used as a promising phosphor which is able to tune from blue to green by changing the Tb3+ concentration in the YAl O3 host material.
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Optical and electrical properties of ZnGa2O4/Mn2+ powder electroluminescent device
TL;DR: In this paper, a powder electroluminescent device using ZnGa 2 O 4 /Mn 2+ phosphor with particle size of 2 μm was developed, which emitted green color of 505 nm with a half width of 25 nm.
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Spectroscopic ellipsometry study of SrBi2Ta2O9 ferroelectric thin films
TL;DR: In this article, the optical properties of SrBi2Ta2O9 (SBT) ferroelectric thin films were investigated by spectroscopic ellipsometry at room temperature in the 15-55 eV spectral range.