The Relation of Thin Film Electroluminescence and Photoluminescence Excitation Spectra

ABSTRACTThin-film Zn2GeO4:Mn phosphors with lower temperature of crystallization and potentially compatible with industrial technologies were investigated. The technology of thin films synthesis has been developed and their structure and crystal parameters have been investigated. Photoluminescence excitation spectra, photoconductivity, temperature dependencies and ESR-spectra of manganese ions were studied. A mechanism for luminescence in this phosphor has been proposed. Results are presented of cathodo- and electro-luminescence of thin film structures of Zn2GeO4:Mn.

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Effects of selenisation temperature on photoluminescence and photoluminescence excitation spectra of ZnO/CdS/Cu2ZnSnSe4/Mo/glass

Thin Solid Films ◽

10.1016/j.tsf.2019.01.002 ◽

2019 ◽

Vol 672 ◽

pp. 146-151 ◽

Cited By ~ 1

Author(s):

M.A. Sulimov ◽

M.V. Yakushev ◽

J. Márquez-Prieto ◽

I. Forbes ◽

P.R. Edwards ◽

...

Keyword(s):

Photoluminescence Excitation ◽

Excitation Spectra

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Energy-Dependent Capture Cross Sections and the Photoluminescence Excitation Spectra of Gallium Phosphide above the Threshold for Intrinsic Interband Absorption

Physical Review ◽

10.1103/physrev.168.889 ◽

1968 ◽

Vol 168 (3) ◽

pp. 889-901 ◽

Cited By ~ 51

Author(s):

P. J. Dean

Keyword(s):

Cross Sections ◽

Gallium Phosphide ◽

Interband Absorption ◽

Capture Cross ◽

Photoluminescence Excitation ◽

Excitation Spectra ◽

Energy Dependent ◽

Capture Cross Sections

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Photoluminescence and Photoluminescence Excitation Spectra of AlAs/GaAs Disordered Superlattices with Various Disordered Lengths

Japanese Journal of Applied Physics ◽

10.1143/jjap.35.2566 ◽

1996 ◽

Vol 35 (Part 1, No. 5A) ◽

pp. 2566-2572 ◽

Cited By ~ 4

Author(s):

Kazuyuki Uno ◽

Susumu Noda ◽

Akio Sasaki

Keyword(s):

Photoluminescence Excitation ◽

Excitation Spectra

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Study of Photoluminescence Excitation Spectra of Tris(8-hydroxyquinoline)aluminum(III) (Alq3) in Solutions and Films

Israel Journal of Chemistry ◽

10.1002/ijch.201400053 ◽

2014 ◽

Vol 54 (7) ◽

pp. 927-930

Author(s):

Zhoulu Wang ◽

Taiju Tsuboi ◽

Xiang Liu ◽

Wei Huang

Keyword(s):

Photoluminescence Excitation ◽

Excitation Spectra

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Spectroscopic identification of individual fluorophores using photoluminescence excitation spectra

Journal of Microscopy ◽

10.1111/jmi.12679 ◽

2018 ◽

Vol 270 (3) ◽

pp. 261-271 ◽

Cited By ~ 2

Author(s):

J. CZERSKI ◽

W. COLOMB ◽

F. CANNATARO ◽

S.K. SARKAR

Keyword(s):

Photoluminescence Excitation ◽

Excitation Spectra ◽

Spectroscopic Identification

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Thermal Relaxation Spectra for Evaluating Luminescence Quantum Efficiency of CASN:Eu2+ Measured by Balanced-Detection Sagnac-Interferometer Photothermal Deflection Spectroscopy

Applied Sciences ◽

10.3390/app10031008 ◽

2020 ◽

Vol 10 (3) ◽

pp. 1008

Author(s):

Hiromichi Chima ◽

Naoyuki Shiokawa ◽

Keisuke Seto ◽

Kohsei Takahashi ◽

Naoto Hirosaki ◽

...

Keyword(s):

Excitation Spectrum ◽

Quantum Efficiency ◽

Thermal Relaxation ◽

Photoluminescence Excitation ◽

Sagnac Interferometer ◽

Excitation Spectra ◽

Radiative Relaxation ◽

Relaxation Spectra ◽

Balanced Detection ◽

Photothermal Deflection

Highly sensitive broadband photothermal spectroscopy with a white-light lamp as the excitation source was developed by combining a Sagnac interferometer and balanced detection with a photothermal deflection method. A probe beam was split by a birefringent crystal CaCO3 into signal and reference beams with a balanced intensity. This balanced detection enabled the measurement of photoexcited thermal relaxation spectra of materials in the air over the whole visible range in the weak excitation limit 50 µW/cm2. The photothermal excitation spectrum of Eu2+-doped CaAlSiN3 phosphors (CASN:Eu2+) with a high luminescent quantum efficiency was measured to be distinctly different from the photoluminescence excitation spectrum which reflects the absorption spectrum, revealing the thermal relaxation mechanism of the phosphor. Assuming a typical non-radiative relaxation from the higher excited states to the lowest excited state and successively to the ground state, it is demonstrated that the photoluminescence efficiency of the phosphors is readily evaluated simply by comparing the photothermal and photoluminescence excitation spectra.

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