Blackening treatment method for improving conductivity of lithium niobate or lithium tantalate wafer
The invention discloses a blackening treatment method for improving the conductivity of a lithium niobate or lithium tantalate wafer, which comprises the following steps: mechanically ball-milling and mixing a reducing elementary substance material, lithium carbonate powder, plant fiber or plant sta...
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| creator | NI RONGPING WU BING WU JIANBO LEE SEUNG-WOO ZHANG YU |
| description | The invention discloses a blackening treatment method for improving the conductivity of a lithium niobate or lithium tantalate wafer, which comprises the following steps: mechanically ball-milling and mixing a reducing elementary substance material, lithium carbonate powder, plant fiber or plant starch and water to obtain a composite reducing agent; the preparation method comprises the following steps: coating the front and back surfaces of a pretreated lithium niobate wafer or lithium tantalate wafer with a composite reducing agent in a spraying or spin coating manner, drying, alternately stacking the wafers in a container, transferring the container into a heat treatment furnace, vacuumizing the heat treatment furnace, adjusting the temperature in the heat treatment furnace, and carrying out heat treatment under a nitrogen atmosphere, so as to obtain the lithium tantalate wafer or lithium tantalate wafer. According to the technical scheme, yellow-black wafers/grey wafers with different reduction degrees can |
| format | Patent |
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| language | chi ; eng |
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| subjects | AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL |
| title | Blackening treatment method for improving conductivity of lithium niobate or lithium tantalate wafer |
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