Properties of ZnO-containing phosphors under low voltage cathode ray excitation

Hiraki, M.; Kagami, A.; Hase, T.; Narita, Kinichiro; Mimura, Y.

doi:10.1016/0022-2313(76)90202-7

Cited by 21 publications

(8 citation statements)

References 5 publications

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“…8,9 Also, although the presence of In 2 O 3 on the phosphor surface causes a dissipation of the coulomb charge built up on the phosphor surface, In 2 O 3 itself acts as a nonradiative region on the phosphor surface. 10 It is learned that the amount of In 2 O 3 addition needs to be as small as possible. Figure 2 shows XRD curves of the as-received and the In 2 O 3 -coated phosphor screens.…”

Section: Measurement For In 2 O 3 On the Phosphor Surfacementioning

confidence: 99%

Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties

et al. 2003

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A nanoscale continuous coating of In 2 O 3 on phosphors for low-voltage display applications is proposed in which the electrical conductivity of phosphor screen plays a major role. The effect of In 2 O 3 coating by the sol-gel method on the cathodoluminescence (CL) of ZnGa 2 O 4 :Mn phosphors improves the intensity of low-voltage CL noticeably compared with that of In 2 O 3 mixing. It is understood that electrically conductive channels are formed by a much smaller amount of In 2 O 3 addition than that of In 2 O 3 mixing. Especially, based on transmission electron microscopy analysis, the formation of uniform nanoscale continuous In 2 O 3 layers on the phosphor surface was confirmed. Also, the structural and CL characterizations presented in this paper clearly demonstrate that the nanoscale encapsulation of In 2 O 3 layers on phosphors served as protective layers retarding the CL degradation introduced by the low-energy electron irradiation, which is critically important for the development of low-voltage display applications.

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Section: Measurement For In 2 O 3 On the Phosphor Surfacementioning

confidence: 99%

Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties

et al. 2003

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“…6 The other is to use conductive materials including SnO 2 and ZnGa 2 O 4 as a host crystal of low-voltage phosphors. For the low voltage excitation, space charges may be built up at the phosphor surface due to its high current operation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and modification of red oxide phosphors for low voltage excitation

Gwak

Park

Jang

et al. 2000

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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New red oxide phosphors Y 2 O 3 :Eu 3ϩ ,Si 4ϩ and ͑Y,Gd͒ 2 O 3 :Eu 3ϩ ,Si 4ϩ ,Bi 3ϩ are synthesized by a coprecipitation method. Relative cathodoluminescence ͑CL͒ brightness at low voltages (р1 kV͒ is analyzed. At the low voltage excitation, luminance of the synthesized phosphors is higher than that of other commercially available red phosphors Y 2 O 2 S:Eu 3ϩ and Y 2 O 3 :Eu 3ϩ . In particular, the difference of relative brightness between the commercially available phosphors and the synthesized Y 2 O 3 :Eu 3ϩ ,Si 4ϩ is larger at low voltages (р500 V͒ than at higher voltages. The synthesized ͑Y,Gd͒ 2 O 3 :Eu 3ϩ ,Si 4ϩ ,Bi 3ϩ phosphor gives the same level of brightness as that of Y 2 O 3 :Eu 3ϩ ,Si 4ϩ at voltages greater than 500 V. ͑Y,Gd͒ 2 O 3 :Eu 3ϩ ,Si 4ϩ ,Bi 3ϩ is coated with a conductive material SnO 2 :Eu 3ϩ . The coating of SnO 2 :Eu 3ϩ shows a considerable improvement in brightness without a color shift. The excellent luminescence characteristics of ͑Y,Gd͒ 2 O 3 :Eu 3ϩ ,Si 4ϩ ,Bi 3ϩ coated with SnO 2 :Eu 3ϩ , studied using field emitter arrays, suggests that our synthesized phosphor is practically applicable to field emission display devices.

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“…3 Usually, the conductivity of luminescent compositions is estimated by measuring the resistance of polycrystalline samples in vacuum. The semiconductor phosphors used in multicolor screens of modern displays have low conductivities (10 Ϫ14 -10 Ϫ8 S/cm) and need a conductive ͑nonluminescent͒ additive that, unfortunately, reduces the emitting fraction of the display screen.…”

Section: Introductionmentioning

confidence: 99%

Electrophysical characteristics and low-energy cathodoluminescence of vacuum fluorescent display and field emission display screens

Bukesov

1998

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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Special methods are proposed to estimate the conductivity of a thin phosphor layer deposited onto the screen of vacuum fluorescent display and field emission display. Some phosphor compositions have been studied with the aid of these methods. The conductivity of screens has been found to be subject to the voltage applied to a display and to alter significantly under the influence of electron bombardment. Electron-induced conduction is considered as the main cause of the observed conductivity. A correlation between some features of cathodoluminescence and electron-induced conduction has been revealed. Recommendations on how to calculate the optimal mode of display operation are given.

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Properties of ZnO-containing phosphors under low voltage cathode ray excitation

Cited by 21 publications

References 5 publications

Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties

Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties

Synthesis and modification of red oxide phosphors for low voltage excitation

Electrophysical characteristics and low-energy cathodoluminescence of vacuum fluorescent display and field emission display screens

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Properties of ZnO-containing phosphors under low voltage cathode ray excitation

Cited by 21 publications

References 5 publications

Nanoscale continuous In2O3 coating on phosphor particles for improved low-voltage cathodoluminescent properties

Nanoscale continuous In2O3 coating on phosphor particles for improved low-voltage cathodoluminescent properties

Synthesis and modification of red oxide phosphors for low voltage excitation

Electrophysical characteristics and low-energy cathodoluminescence of vacuum fluorescent display and field emission display screens

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Product

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Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties

Nanoscale continuous In₂O₃ coating on phosphor particles for improved low-voltage cathodoluminescent properties