WO2008098675A1 - Source de rayonnement transparente et procédé de génération de rayonnement - Google Patents

Source de rayonnement transparente et procédé de génération de rayonnement Download PDF

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Publication number
WO2008098675A1
WO2008098675A1 PCT/EP2008/000640 EP2008000640W WO2008098675A1 WO 2008098675 A1 WO2008098675 A1 WO 2008098675A1 EP 2008000640 W EP2008000640 W EP 2008000640W WO 2008098675 A1 WO2008098675 A1 WO 2008098675A1
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WO
WIPO (PCT)
Prior art keywords
radiation
wavelength range
radiation source
electrodes
lanthanides
Prior art date
Application number
PCT/EP2008/000640
Other languages
German (de)
English (en)
Inventor
Klaus Trampert
Uli Lemmer
Wolfgang Heering
Claus Feldmann
Aksana Zharkouskaya
Original Assignee
Universität Karlsruhe (Th)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universität Karlsruhe (Th) filed Critical Universität Karlsruhe (Th)
Priority to EP08707345A priority Critical patent/EP2118918A1/fr
Publication of WO2008098675A1 publication Critical patent/WO2008098675A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/305—Flat vessels or containers

Definitions

  • the present invention relates to a radiation source for generating electromagnetic radiation of a first wavelength range which is transparent to electromagnetic radiation of a second wavelength range at least partially overlapping with the first wavelength range, and to a method for generating electromagnetic radiation of a first wavelength range by means of a radiation source the intensity and direction of a passing through the radiation source electromagnetic radiation of at least partially overlapping with the first wavelength range second wavelength range is substantially unaffected.
  • Radiation sources which are transparent to radiation of certain wavelength ranges are generally used wherever illumination with radiation of a first wavelength range is to be effected without an intensity of present radiation of a second wavelength range whose origin may be arbitrary, by scattering, absorption and / or to reduce transmission.
  • a second wavelength range whose origin may be arbitrary, by scattering, absorption and / or to reduce transmission.
  • the radiation source for generating the radiation of the first wavelength range for radiation of the second wavelength range is transparent, since such a radiation source can be easily introduced into the beam path of the radiation of the second wavelength range, without the radiation of the second wavelength range to change significantly or to reduce their radiance.
  • a further disadvantage results from the lateral irradiation of the radiation into the plastic disk, since the intensity of the radiation at the edges of the disk is substantially higher than in the center of the disk and it is very difficult to achieve a homogeneous radiation density of the radiation over the entire surface of the disk To reach plastic disc.
  • OLED organic light-emitting diodes
  • radiant sources are gas discharge lamps, which operate on the principle of dielectrically impeded discharge and in which preferably a noble gas is excited to a plasma.
  • Radiation sources based on the principle of dielectrically impeded discharge for the generation of visible light are disclosed, for example, in DE 43 11 197 A1, DE 195 26 211 A1 and DE 196 36 965 A1.
  • radiant sources based on the principle of dielectrically impeded discharge have AC voltage, typically high voltage, electrodes separated from the gas by a dielectric or dielectric layer. The gas located between the electrodes and excited into a plasma produces, as a result of gas discharges, radiation whose predominant part is not in the visible spectral range.
  • phosphors are also used to convert the radiation generated by the gas discharges in the visible spectral range, which are usually provided as phosphor layers. Both the phosphors and the phosphor layers containing these phosphors are partially opaque (translucent) to visible light, so that known visible-light radiation sources based on the principle of dielectrically impeded discharge are not transparent.
  • EP 1 521 292 A2 describes a light source comprising (a) a plasma discharge source emitting electromagnetic radiation, a portion of said radiation having a wavelength of less than 200 nm, and (b) a phosphor composition comprising particles, each of said particles A comprises at least a first phosphor and at least one second phosphor, wherein the first phosphor can form a coating around each of the particles of the second phosphor.
  • WO 99/23191 A1 describes a display device comprising phosphor particles having an average diameter of less than about 100 nm, and wherein the phosphor particles consist of a collection of particles with a narrow diameter distribution to produce emission at a desired frequency.
  • a radiation source for generating electromagnetic radiation of a first wavelength range with two electrodes which can be connected to an alternating voltage source, at least partially transparent and filled with a gas discharge tube for electromagnetic radiation of at least partially overlapping with the first wavelength range second wavelength range, at least a dielectric layer which is at least partially transparent for radiation of the second wavelength range, wherein the electrodes, the dielectric layer and the gas-filled discharge vessel are adapted to excite a dielectrically impeded discharge in the gas upon application of an AC voltage to the electrodes, wherein the gas generates electromagnetic radiation in a third wavelength range, and wherein the radiation source further comprises at least one phosphor particle Phosphor layer, the phosphor particles can be excited by at least a portion of the radiation of the third wavelength range for emission of radiation of the first wavelength range, and their phosphor particles have a particle diameter which is smaller than the wavelengths of the radiation of the second wavelength range and the phosphor layer thereby for radiation of the second Wavelength range is at least partially transparent, provided.
  • a phosphor layer with phosphor particles whose particle diameter is smaller than wavelengths of the radiation of the second wavelength range is provided for the radiation source according to the invention and in the method according to the invention.
  • the phosphor layer is transparent to this radiation.
  • the radiation source is absolutely free of mercury, has only a low temperature dependence and is inexpensive and can also be used outdoors, since the components need not be subjected to any special treatment nor are they affected by UV radiation, moisture or oxygen.
  • the radiation source according to the invention can basically be embodied in any desired form.
  • the phosphor layer of the radiation source and thus their luminous surface can be executed in any form.
  • the radiation source can be partially covered with a phosphor layer be coated in the form of a logo, an advertising lettering, a security marking or the like.
  • the first and the second wavelength range can overlap, for example, in only a very narrow wavelength range, which is then common to both wavelength ranges.
  • the intersection of the first and second wavelength ranges includes multiple wavelengths common to both wavelength ranges.
  • the first and second wavelength ranges may also be nearly or completely identical to one another, or one of the two wavelength ranges may completely encompass the respective other wavelength range.
  • the first wavelength range may be completely encompassed by the second wavelength range, which additionally has further wavelengths, or the second wavelength range may be completely encompassed by the first wavelength range in addition to other wavelengths.
  • the first and / or the second wavelength range are at least partially in the wavelength range of the visible light.
  • both the first and the second wavelength range are at least partially in the wavelength range of the visible light.
  • the third wavelength range is in the range between 100 nm and 800 nm and the first wavelength range in the range between 200 nm and 2000 nm.
  • the first wavelength range preferably covers all wavelengths of the visible light.
  • the particle diameter of the phosphor particles is advantageously at most 200 nm, ie 1 nm to 200 nm, in particular 1 to 100 nm, more preferably 1 to 20 nm, which ensures that the radiation source in particular for visible light has a high transparency.
  • Such inorganic phosphor particles can be produced by the method for the specific synthesis of inorganic phosphor particles, as described in international patent application PCTVE P2007 / 000175, to which reference is made in this regard in full.
  • the phosphor particles from an Ii-Vl semiconductor or an Ill-V semiconductor or from a rare earth-doped metal phosphate or -vanadat.
  • these phosphor particles may be doped with from 5 ppm to 70 mol% of one or more dopants, wherein the dopant is selected from elements of the group consisting of lanthanides, transition metals, main group elements, and combinations thereof. More preferably, the dopant is selected from the group consisting of La, Ce, Pr, Nd, Sm 1 Eu, Gd, Tb, Dy, Ho 1 Er, Tm, Yb, Lu, Cr, Mn, Cu, Zn, Y 1 Ag 1 Cd, B, Al, Ga, In, Ge, Sn, Pb, the halogens, the chalcogens, the elements of the nitrogen group and combinations thereof.
  • the dopant is selected from elements of the group consisting of lanthanides, transition metals, main group elements, and combinations thereof. More preferably, the dopant is selected from the group consisting of La, Ce, Pr, Nd, Sm 1 Eu, Gd, Tb, Dy, Ho 1 Er, Tm, Yb, Lu, Cr
  • these phosphor particles may be coated with an inorganic shell to form core-shell particles.
  • Corresponding processes for the production of core-shell particles are known in the art.
  • the material of the shell is preferably selected from the group consisting of phosphates, halogen phosphates, arsenates, sulfates, borates, aluminates, gallates, silicates, germanates, oxides, vanadates, niobates, tantalates, tungstates, molybdates, halides and alkali halides, nitrides, Oxynitrides, phosphides, sulfides, selenides, tellurides, sulfoselenides, oxysulfides and combinations thereof.
  • the shell has a chemical composition which corresponds to that of the phosphor particle core, but is not doped.
  • a shell whose composition comprises the cation of the host lattice of the phosphor particle core and fluoride or phosphate as the anion.
  • the shell is made of a material selected from SiO 2 , TiO 2 , ZnO, Al 2 O 3 , ZrO 2 , SnO 2 , MgO, the hydroxides, oxide hydroxides, oxide hyd rates n. Hydroxidhyd rates of the above Oxides, MgF 2 , CaF 2 , SrF 2 , BaF 2 , ScF 3 , YF 3 , the lanthanide fluorides, and combinations thereof.
  • the first wavelength range may vary.
  • the color of the light generated can be determined by the choice of a suitable phosphor particle.
  • the phosphor layer may be provided on at least part of the discharge vessel and / or at least part of the dielectric layer and / or at least part of at least one of the electrodes. If the phosphor layer is located outside the discharge vessel, the discharge vessel is at least partially transparent to radiation of the third wavelength range.
  • the phosphor particles are integrated into the dielectric layer, so that ultimately the phosphor layer is identical to the dielectric layer. Thereby, damage of the phosphor layer such as scratching thereof is suppressed, and in the production of the radiation source, the step of applying or coating with the phosphor layer is eliminated.
  • the dielectric layer may for example consist of glass, quartz, ceramic or a polymer. However, if the radiation of the second wavelength range is visible light, glass or quartz is preferred for the dielectric layer. In a further preferred embodiment of the radiation source according to the invention, the dielectric layer simultaneously forms at least part of a wall of the discharge vessel. In this way, the number of components of the radiation source is reduced, which can thereby be assembled easier and faster and on the other hand is more robust.
  • At least one of the electrodes may be transparent to radiation of the second wavelength range. This is necessary in particular when the electrode is arranged in a passage region of the radiation of the second wavelength range.
  • the transparent electrode may have a transparent and conductive oxide layer which is transparent to radiation of the second wavelength range.
  • Exemplary layers are, for example, layer systems such as ITO, ZnO: Al or SnO 2 : F.
  • at least one of the electrodes may be lattice-shaped or strip-shaped, whereby it is transparent even without additional coating for radiation of the second wavelength range. Nonetheless, a grid-shaped or strip-shaped electrode may also be provided with a coating.
  • At least one of the electrodes outside the discharge vessel may be arranged at a distance therefrom or against the outside of a wall of the discharge vessel or at least partially embedded in a wall of the discharge vessel or spaced from the wall thereof within the discharge vessel. If the electrode is arranged at a distance from the discharge vessel, then the space between the electrode and the wall of the discharge vessel is preferably filled by the phosphor layer in order to prevent a plasma from being generated outside the discharge vessel. If the electrode bears against the wall of the discharge vessel from the outside or is completely or partially embedded in the wall from outside, the wall advantageously simultaneously forms the dielectric layer of the radiation source. In the case of electrodes which rest against the wall of the discharge vessel from the inside are partially embedded in the wall or are arranged spaced apart from the wall of the discharge vessel, a dielectric layer is required, which may not be identical to the wall of the discharge vessel.
  • the dielectric layer may either rest against only one of the electrodes or a respective dielectric layer may be present on each electrode.
  • the dielectric layer may be spaced from both electrodes.
  • At least one of the electrodes is structured and has switchable partial surfaces. Then, by activating the corresponding subarea, it is possible to activate only a part of the radiation source for generating radiation.
  • the radiation source is preferably flat, wherein it particularly preferably has an area of at least 100 cm 2 or 500 cm 2 or 1000 cm 2 .
  • the electrodes are advantageously arranged opposite one another or lying next to one another in a plane.
  • An alternative embodiment of the radiation source has a round cross-section, with its electrodes being round and concentric.
  • the gas for example, a pure noble gas or noble gas mixture of two or more noble gases, a noble gas / halogen mixture or metal vapors may be used.
  • Xenon more preferably a mixture of xenon and neon used.
  • the gas preferably has a cold filling pressure of 50 mbar to 1000 mbar, but in principle also low and high pressure gas fillings of the discharge vessel and all intermediate pressures are possible. A KaIt filling pressure in the range of about 150 mbar is preferred.
  • the discharge vessel may have a closed gas volume, but it may also be flowed through by the gas.
  • FIG. 1 shows a cross section through a preferred embodiment of the radiation source according to the invention
  • Fig. 2 the radiation source of Figure 1 in the off state.
  • Fig. 3 the radiation source of Figure 1 in the on state.
  • Fig. 7 a radiation source with in a plane adjacent
  • Fig. 9 a radiation source with X-shaped cross-section in plan view and on the side.
  • the lamp 1 comprises a discharge vessel 2, two electrodes 3a and 3b and two phosphor layers 4a and 4b.
  • the discharge vessel 2 is flat with a cuboid cross-section. It has a gas-filled interior 5, which also has a cuboid cross-section.
  • the gas filling the interior 5 is xenon with a cold filling pressure of 150 mbar. Due to its cuboidal cross section and also cuboidal interior 5, an upper wall 6a and a lower wall 6b of the discharge vessel 2 are formed, which are parallel to each other. Outside the discharge vessel 2, an upper electrode 3a is applied to the upper wall 6a, while also outside the discharge vessel 2, a lower electrode 3b is applied to the lower wall 6b.
  • an upper phosphor layer 4a is applied to the upper wall 6a within the discharge vessel 2, and likewise a lower phosphor layer 4b on the lower wall 6b within the discharge vessel 2.
  • the electrodes 3a, 3b and the phosphor layers 4a, 4b each cover the entire respective available outer or inner surface of the walls 6a and 6b. Both electrodes 3a, 3b are connected to an AC voltage source 7 and can be supplied by this with a high AC voltage.
  • the discharge vessel 2 is made of a quartz glass transparent to visible light. Also, the electrodes 3a and 3b are made transparent due to a transparent oxide coating for visible light.
  • the phosphor layers 4a and 4b both have phosphor particles whose particle diameter is smaller than 100 nm, which is in particular substantially smaller than the wavelengths of visible light. Scattering effects of visible light at the edges of the phosphor particles are thus excluded, as a result of which the phosphor layers 4a and 4b are also transparent to visible light.
  • the entire lamp 1 is transparent to visible light.
  • FIG. 2 shows the conditions which are present when the lamp 1 is switched off due to its transparency. Visible light 8 originating from the surroundings of the lamp 1 penetrates the transparent lamp 1 virtually unimpeded in all directions, whereby, for the sake of simplicity, only vertical directions are drawn for the lamp 1.
  • the AC voltage source 7 supplies the electrodes 3a, 3b with an AC voltage, and the electrodes 3a, 3b act similarly to the plates of a capacitor. Between the electrodes 3a, 3b are the quartz glass walls 6a and 6b of the discharge vessel, which thus act as sandwiched between the plates of a capacitor dielectric layers. Because of this, the gas in the interior 5 of the discharge vessel 2 is excited to a dielectrically impeded discharge. In this dielectrically impeded discharge, the gas emits non-visible radiation.
  • This non-visible radiation is absorbed by the phosphor particles of the phosphor layers 4a and 4b and excites them to emit visible light 9, the emission direction of which is also shown for simplicity only in directions perpendicular to the lamp 1 directed outward from the lamp 1.
  • the lamp 1 emits visible light 9 which emanates therefrom, together with the light 8 passing through the lamp.
  • the lamp 1 generates the light 9, it is nevertheless transparent to the light 8 from the environment.
  • FIG. 4 An alternative embodiment of the transparent lamp is shown in Figure 4 without AC voltage source.
  • the lamp 10 shown in FIG. 4 has no independent phosphor layers. Rather, the responsible for the conversion of the radiation generated by the gas in the visible light 9 fluorescent particles in the walls 11 a and 11 b of the discharge vessel 12 are integrated, so that the walls 11 a and 11 b at the same time the function of a dielectric layer as well as the function have a phosphor layer.
  • the electrodes 3a, 3b remain unchanged. With regard to the arrangement of the electrodes 3a, 3b, there are several different possibilities. Some of these are shown in FIGS. 5a) -g), which each show, for example, a detail of a wall 6 of a discharge vessel and an electrode 3.
  • the electrode 3 is arranged outside the discharge vessel without being in contact with the wall 6. So that the formation of a plasma outside the discharge vessel is prevented, the space between the electrode 3 and the wall 6 is filled with a phosphor layer 4. In this embodiment can thus be dispensed with the application of phosphor layers 4 within the discharge vessel.
  • the electrode 3 rests against the wall 6 from the outside, while the electrode 3 in FIG. 5c) is partially embedded in the wall 6 from outside and / or is received by it.
  • the electrode 3 is arranged completely inside the wall 6 and is enclosed by it on all sides.
  • the part of the wall 6 lying between the respective electrode 3 and the inner space 5 serves as a dielectric layer.
  • FIG. 5e Another possibility for arranging the electrode 3 is shown in FIG. 5e).
  • the electrode 3 is disposed within the inner space 5 and partially embedded in the wall 6 and received by this.
  • the electrode 3 arranged in the interior 5 abuts against the wall 6 only.
  • the electrode 3 in the figure 5g) spaced from the wall 6 in the interior 5 is arranged. If both electrodes 3a, 3b are provided according to one of the arrangements shown in FIGS. 5e) -g), none of the walls 6a and 6b can assume the function of a dielectric layer since they are no longer located between the electrodes 3a, 3b. In these cases, therefore, it is necessary to provide a self-contained dielectric layer.
  • both electrodes 3a and 3b are spaced from the walls 6a and 6b of the discharge vessel 2 and arranged in the interior 5 thereof.
  • Phosphor layers 4a and 4b are provided on the walls 6a and 6b in the interior 5, as in the case of the lamp of FIG. 1, the electrodes 3a and 3b respectively resting on the phosphor layers 4a and 4b.
  • a dielectric layer 14 is arranged centrally in the inner space 5, which electrically shields the electrodes 3a and 3b from each other.
  • the phosphor layers 4a and 4b could be applied to the dielectric layer 14 instead of the walls 6a and 6b.
  • FIG. 7 A different approach for a transparent lamp 16 is shown in FIG. 7.
  • two electrodes 15a, 15b which are each smaller than the outer surface of the lamp 16, contact the lower wall 6b from the outside.
  • phosphor layers 4a and 4b are provided on the walls 6a and 6b in the interior 5, as in the case of the lamp of FIG.
  • the plasma in the inner space 5 burns arcuately due to thermal effects, with the arc spanning from one electrode 15a to the other electrode 15b.
  • lamps of the invention can be given arbitrary shapes.
  • FIG. 8 shows a lamp 17 with a circular cross-section.
  • the discharge vessel is formed by two nested and concentrically arranged tubes 18a, 18b of different diameters.
  • a wire-shaped electrode 19 along the longitudinal axis of the lamp 17.
  • the outer tube 18b is internally provided with a phosphor layer 20 and the outside with an electrode 21.
  • the interior 22 between the pipes 18a, 18b is filled with a gas.
  • the lamp 23 shown in FIG. 9 has an X-shape in plan view. In the side view can be seen that the lamp 23 has a structure according to the figure 1. LIST OF REFERENCE NUMBERS

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Luminescent Compositions (AREA)

Abstract

Source de rayonnement (1; 10; 13; 16; 17; 23) pour la génération de rayons électromagnétiques d'une première plage de longueurs d'ondes (9) et procédé correspondant. La source de rayonnement (1; 10; 13; 16; 17; 23) comprend deux électrodes (3; 15; 19; 21 ) qui peuvent être reliées à une source de tension alternative (7), un rayonnement électromagnétique d'une deuxième plage de longueurs d'ondes (8) au moins partiellement transparente et recoupant au moins partiellement la première plage de longueurs d'ondes (9); et une enceinte à décharge (2; 12) remplie de gaz et au moins une couche diélectrique (14) au moins partiellement transparente sont conçues pour le rayonnement de la deuxième plage de longueurs d'ondes (8). Les électrodes (3; 15; 19; 21 ), la couche diélectrique (14) et l'enceinte à décharge (2; 12) remplie de gaz pour l'excitation d'une décharge de gaz à barrière diélectrique lors de l'application aux électrodes (3; 15; 19; 21 ) d'une tension alternative pour laquelle le gaz génère un rayonnement électromagnétique dans une troisième plage de longueurs d'ondes. La source de rayonnement (1; 10; 13; 16; 17; 23) présente également au moins une couche de substance luminescente (4; 11; 20) contenant des particules de substance luminescente qui sont excitées par au moins une partie du rayonnement de la troisième plage de longueurs d'ondes aux fins d'émission du rayonnement de la première plage de longueurs d'ondes (9) et qui présentent un diamètre inférieur à la longueur d'onde du rayonnement de la deuxième plage de longueurs d'ondes (8), la couche de substance luminescente (4; 11; 20) étant ainsi au moins partiellement transparente pour le rayonnement de la deuxième plage de longueurs d'ondes (8).
PCT/EP2008/000640 2007-02-12 2008-01-28 Source de rayonnement transparente et procédé de génération de rayonnement WO2008098675A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08707345A EP2118918A1 (fr) 2007-02-12 2008-01-28 Source de rayonnement transparente et procédé de génération de rayonnement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710006861 DE102007006861B3 (de) 2007-02-12 2007-02-12 Transparente Strahlungsquelle und Verfahren zur Strahlungserzeugung
DE102007006861.3 2007-02-12

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Publication Number Publication Date
WO2008098675A1 true WO2008098675A1 (fr) 2008-08-21

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PCT/EP2008/000640 WO2008098675A1 (fr) 2007-02-12 2008-01-28 Source de rayonnement transparente et procédé de génération de rayonnement

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EP (1) EP2118918A1 (fr)
DE (1) DE102007006861B3 (fr)
WO (1) WO2008098675A1 (fr)

Cited By (1)

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CN115161031A (zh) * 2022-08-02 2022-10-11 福州大学 一种高效紫外发光闪烁体纳米材料及其制备方法和应用

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DE102009030310A1 (de) 2009-06-24 2010-12-30 Osram Gesellschaft mit beschränkter Haftung Dielektrische Barriere-Entladungslampe mit Entladungsräumen
DE102013103807A1 (de) * 2013-04-16 2014-10-16 Dritte Patentportfolio Beteiligungsgesellschaft Mbh & Co.Kg HF-Lampe mit vergrabener Elektrode

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US5523018A (en) * 1990-10-02 1996-06-04 Nichia Kagaku Kogyo K.K. Phosphor composition, phosphor-coating composition, discharge lamp, and preparation method thereof
JPH0927296A (ja) * 1995-07-13 1997-01-28 Stanley Electric Co Ltd 平面型放電灯
JPH1140107A (ja) * 1997-07-24 1999-02-12 Toshiba Corp 低圧水銀蒸気放電灯
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DE10057881A1 (de) * 2000-11-21 2002-05-23 Philips Corp Intellectual Pty Gasentladungslampe mit Leuchtstoffschicht
EP1271618A2 (fr) * 2001-06-22 2003-01-02 Philips Corporate Intellectual Property GmbH Lampe à decharge pour décharges délimitées dielectriquement avec luminophore bleu

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US7132783B1 (en) * 1997-10-31 2006-11-07 Nanogram Corporation Phosphor particles having specific distribution of average diameters
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Publication number Priority date Publication date Assignee Title
US5523018A (en) * 1990-10-02 1996-06-04 Nichia Kagaku Kogyo K.K. Phosphor composition, phosphor-coating composition, discharge lamp, and preparation method thereof
JPH0927296A (ja) * 1995-07-13 1997-01-28 Stanley Electric Co Ltd 平面型放電灯
JPH1140107A (ja) * 1997-07-24 1999-02-12 Toshiba Corp 低圧水銀蒸気放電灯
JP2002038147A (ja) * 2000-07-26 2002-02-06 Toshiba Corp 緑色蛍光体およびそれを用いた発光装置
DE10057881A1 (de) * 2000-11-21 2002-05-23 Philips Corp Intellectual Pty Gasentladungslampe mit Leuchtstoffschicht
EP1271618A2 (fr) * 2001-06-22 2003-01-02 Philips Corporate Intellectual Property GmbH Lampe à decharge pour décharges délimitées dielectriquement avec luminophore bleu

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115161031A (zh) * 2022-08-02 2022-10-11 福州大学 一种高效紫外发光闪烁体纳米材料及其制备方法和应用
CN115161031B (zh) * 2022-08-02 2023-09-22 福州大学 一种高效紫外发光闪烁体纳米材料及其制备方法和应用

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DE102007006861B3 (de) 2008-05-29

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