Electrochemical luminescence of Mg1−xCaxIn2O4:Er3+ electrodes

Sonoyama, Noriyuki; Kawamura, Ken; Yamada, Atsuo; Kanno, Ryoji

doi:10.1016/j.jlumin.2008.03.027

Cited by 4 publications

(5 citation statements)

References 19 publications

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“…The conditions for the ECL measurements have been mentioned in previous papers. 15,16 The DC electronic conductivity of the MgIn 2−x Ga x O 4 pellets was measured by the four-contact method using a potentio-galvanostat (Hokuto Denko, HA-501).…”

Section: Methodsmentioning

confidence: 99%

“…4,5,[12][13][14] In the case of the A and B lines, these sharp and broad peaks can be attributed to the ECL from the Ga 3+ ions, because a non-dope MgIn 2 O 4 host shows no ECL except for a broad peak around 700 nm attributed to the luminescence from the vacancies. 15,16 Ohtake et al reported the ECL for Ga-containing compounds. [12][13][14] They reported cathodic and anodic ECL from a ZnGa 2 O 4 electrode, which is a famous phosphor that shows cathode luminescence.…”

Section: Ecl Spectra Of Mggamentioning

confidence: 99%

“…The electrochemical luminescence (ECL) of semiconductors in a liquid electrolyte has been intensively investigated, [3][4][5][6][7][8][9][10][11][12][13][14][15][16] and it has already been shown that n-type semiconductors show two types of ECL. 3,4,8 The emission mechanisms of these two types are illustrated in Fig.…”

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confidence: 99%

“…[17][18][19] It is also a good ECL host material that shows bright ECL at doped luminescent centers without showing luminescence in the visible region. 15,16 MgIn 2 O 4 has an inverse spinel structure in which In 3+ ions occupy tetrahedral 8a sites and octahedral 16d sites. If the In 3+ ions can be replaced with the dopant ions at both these sites, luminescent-center ions can occupy different environment sites.…”

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confidence: 99%

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Electrochemical Luminescence of Gallium-Ion-Doped MgIn2O4 Electrodes

Sonoyama

Inukai

Hanamura

et al. 2011

J. Electrochem. Soc.

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Electrochemical luminescence (ECL) under anodic polarization involves an excitation process that is analogous to the excitation process of inorganic electroluminescence (EL) devices, i.e., the so-called impact excitation process. ECL is suitable for facilitating the exploration of new materials to be used for fabricating EL devices, because the luminescent property associated with ECL can be examined by simple electrochemical measurements without fabricating an emitting device. In the present study, MgIn 2 O 4 (MgGa x In 2−x O 4 ) doped with various amounts of Ga 3+ were synthesized and their ECL property was investigated to develop a new white-emitting EL material. The ECL spectra of the MgGa x In 2−x O 4 largely depended on the doped Ga 3+ content. The main peak in the emission spectra of a sample with x = 0.1 was a broad one (400-600 nm). With an increase in the Ga 3+ content, the MgGa x In 2−x O 4 samples with x = 0.2 and 0.3 showed two sharp emissions (in the form of lines) in the green region and these two sharp lines became main luminescence in the sample with x = 0.3. The surface of an electrode showed white-plane emission in the sample with x = 0.3. This change in the luminescent property upon changing the Ga 3+ content appears to be caused by the change in the distribution of the Ga 3+ ions in the MgGa x In 2−x O 4 structure.

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Section: Methodsmentioning

confidence: 99%

Section: Ecl Spectra Of Mggamentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Electrochemical Luminescence of Gallium-Ion-Doped MgIn2O4 Electrodes

Sonoyama

Inukai

Hanamura

et al. 2011

J. Electrochem. Soc.

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“…Non-rare-earth ions, which exhibit excellent performance, have been frequently used as co-dopants to improve the phosphor optical properties. [7][8][9] As reported in the literature, [10][11][12][13][14] UC of rare earth (RE)-transition metal (TM) ions co-doping system benets from the combined advantages of specic energy levels of RE ions and tunable energy levels of TM ions, which are very attractive for a wide range of applications. [15][16][17] The choice of different hosts and RE/TM dopants may result in novel and desirable UC properties.…”

Section: Introductionmentioning

confidence: 99%