Composite Oxide Sintered Body for UV-Transparent Conductive Films
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Solution Overview
Problem
Existing MgO-ZnO-based sintered bodies suffer from reduced translucency in the ultraviolet region due to their composition, limiting their application in films requiring high conductivity and transparency.
Innovation Solution
A sintered body comprising cubic MgO, hexagonal ZnO, and ZnGa2O4 with specific atomic ratios of Ga, Zn, and Mg is used to form films with enhanced ultraviolet transmittance and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MgO-ZnO-based oxide is used for sintered body, then conductivity is improved, but translucency in ultraviolet region deteriorates
Solution Approach 1:
The patent uses a composite oxide sintered body containing cubic MgO, hexagonal ZnO, and ZnGa2O4 phases. This composite structure allows the material to simultaneously achieve high conductivity (from the ZnO-rich composition) and high ultraviolet translucency (from the specific phase composition and Mg solid-solution content), resolving the contradiction between conductivity and UV translucency that plagues simple MgO-ZnO systems
Solution Approach 2:
The patent carefully controls the atomic ratio of Ga to (Zn+Mg+Ga) within 0.0001-0.090 and Mg to (Zn+Mg) within 0.25-0.80 to optimize the balance between conductivity and UV translucency. By adjusting these compositional parameters and controlling the solid-solution state of Mg in each phase, the material achieves both high conductivity and high UV translucency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed sintered body achieves films with high translucency and conductivity, suitable for applications such as transparent electrodes in ultraviolet emitting devices.
Implementation Method 1
a cubic MgO into which Zn is solid-solved, a hexagonal ZnO into which Mg is solid-solved, and a ZnGa2O4 into which Mg is solid-solved
Data Source
AI summary
An oxide sintered body comprising a cubic MgO into which Zn is solid-solved, a hexagonal ZnO into which Mg is solid-solved, and a ZnGa2O4 into which Mg is solid-solved.