JP3076838B2 - Laminated body, method for producing laminated body, and method for producing luminous body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate, a method for producing a laminate, and a method for producing a luminous body.

[0002]

2. Description of the Related Art Fullerene is a hollow molecule having 32 to 960 carbon atoms, and is a method by Crashmer et al. (Nature, 345 , 3).
54 (1990)). In fullerene, C
₆₀ is known to emit light, but it shows only weak light emission and could not be used as a practical light emitting material.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a laminate of a fullerene layer and a layer made of a specific auxiliary substance and a method for producing a luminous body.

[0004]

According to the present invention, there is provided a laminate of at least one fullerene layer and at least one auxiliary material layer on a substrate, wherein the auxiliary material is a metal, a metalloid, a metal compound, a metal compound, A laminate or a method for producing the laminate, wherein the laminate is selected from a metal compound and a mixture thereof, and the auxiliary material layer is formed by sputtering the auxiliary material.

[0005] The present invention provides a lamination including a step of forming a fullerene layer on a substrate, and a step of forming a layer made of the substance by sputtering a material capable of being formed on the fullerene layer by sputtering. The present invention provides a method for producing a body or a luminous body.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A laminate or luminous body produced by the method of the present invention is a composite laminate of one or more fullerene layers and one or more auxiliary substance layers, wherein the auxiliary substance is a metal, It is a metalloid, a metal compound, a metalloid compound or a mixture thereof.

[0007] _{C 60} are preferred in view of stability as a fullerene. The fullerene layer is preferably formed on a suitable substrate by a vapor deposition method. As the substrate, for example, glass, quartz, metal, plastic, ceramic, or the like is used.

[0008] As the auxiliary substance used in the production of the laminate, any substance can be used as long as it can form a film by sputtering. Metals, metalloids, their compounds, alloys and mixtures are commonly used. Such metals and metalloids include Periodic Tables Ia to VIIa, VIII and VIIIa.
And Ib to VIb. Preferred examples of the auxiliary substance include silicon, germanium, tin oxide, titanium oxide, indium oxide, silicon oxide, aluminum oxide, zinc oxide, silicon nitride, boron nitride, cadmium sulfide, zinc sulfide, and glass.

The total thickness of the fullerene layer is preferably 50
It is between 0 nm and 500 μm, and the total thickness of the auxiliary material layer is preferably between 10 nm and 100 μm. Usually, the auxiliary substance is 0.5 to 0.5% based on the total amount of the auxiliary substance and the fullerene.
10% by weight.

When a plurality of fullerene layers and a plurality of auxiliary substance layers are used, they are preferably alternately laminated from the viewpoint of high light emission. In this case, the thickness of each fullerene layer is preferably in the range of 10 nm to 5 μm, and the thickness of each auxiliary material layer is preferably in the range of 0.5 nm to 1 μm.

The luminous body comprising the laminated composite film according to the present invention can emit white light having a wavelength of 650 nm or more by irradiating the surface thereof with an argon laser beam having a wavelength of 514.5 nm.
The luminous intensity of the luminous body of the present invention changes depending on the relative thickness between the fullerene layer and the auxiliary material layer, the irradiation intensity of argon laser light, and the like. The emission intensity also depends on the temperature,
The lower the temperature, the stronger the light emission. The luminous body of the present invention can be used for light sources such as visible and infrared spectrometers.

[0012]

Next, the present invention will be described in more detail by way of examples.
I do. Example 1 A surface of a glass substrate having a thickness of 0.5 mm was coated with C₆₀Film and silicon
A con film was alternately formed. In this case, C₆₀The membrane is C
₆₀Powder is formed by vapor deposition, and the silicon film is
It was formed by a sputtering method. The vapor deposition method and RF spa
All the cutting methods are performed in the same vacuum chamber.
The vacuum (10^-6Torr) Argon in chamber
Gas was introduced and the internal pressure was 4 × 10^-3Adjust to Torr
Was. C₆₀Deposition of C on the crucible₆₀Add the powder
By heating to 300 ° C and subliming
Was. On the other hand, RF sputtering of silicon has a high power of 50 W.
Apply frequency (13.6 MHz) to emit argon ions
The argon ions collide with the Si target.
And by ejecting the Si cluster. Previous
Note C₆₀The number of alternate laminations of the film and the Si film is 100 times.
In this case, a single C ₆₀The thickness of the film is about 30 nm and
The thickness of the single Si film is 0.6 nm. Like this
And C₆₀A laminated composite film having a weight ratio of about 96/4 / Si
It was formed on a glass substrate. Next, the surface of the laminated composite film
The light intensity on the film surface is 1.88 W / cm²Al
When irradiated with Gon laser light at room temperature,
Emission showing an emission spectrum with increased intensity as
(White light), and only C₆₀The emission intensity of the film
The relative emission intensity was set to 1, 5 at 700 nm wavelength, and 7 at wavelength.
4 at 50 nm, 25 at 850 nm, 900 nm
With the above, an emission intensity of 50 was obtained.

[0013] to form a _{C 60} film having a thickness of 2000nm in the same manner as in Example 1 on the surface of the glass substrate of Example 2 thickness of 0.5mm method. next,
A silicon film having a thickness of 10 nm is formed in the same manner as in the first embodiment.
Formed on ₆₀ films. When the obtained laminate was irradiated with argon laser light, it emitted much stronger light than the case of a single _C60 film.

[0014] performs Example 1 was repeated except that titanium oxide was used in place of Example 3 silicon as a target, to create an alternate laminate of the C ₆₀ film and a titanium oxide film. The resulting laminate exhibited an extremely strong emission compared to C ₆₀ single layer by argon laser irradiation.

[0015]

According to the method of the present invention, it is possible to obtain a laminate comprising a layer made of fullerene and an auxiliary substance.
This laminate can be used as a light emitter. According to this luminous body, it is possible to generate strong luminescence (photoluminescence) having a luminescence spectrum over a wide range of 650 nm or more by irradiation with an argon laser beam.

Claims (4)

(57) [Claims] 1. A substrate, comprising at least one fullerene layer and at least one auxiliary material layer, wherein the auxiliary material is selected from metals, metalloids, metal compounds, metalloid compounds and mixtures thereof. Wherein the auxiliary material layer is formed by sputtering the auxiliary material. 2. A step of forming a fullerene layer on a substrate,
2. The method for producing a laminate according to claim 1, further comprising: sputtering a substance capable of being formed into a film on the fullerene layer by sputtering to form a layer made of the substance. 3. A step of forming a fullerene layer after the step of forming a layer made of the substance by sputtering according to claim 2, and sputtering a substance capable of being formed on the fullerene layer by sputtering. A method of manufacturing a laminate by repeating a step of forming a layer made of the substance by the method described above. 4. A method for manufacturing a luminous body, wherein the laminate according to claim 2 is a luminous body.