UV-C Light Emitting Structure Using Impact Ionization
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Solution Overview
Problem
Existing composite boards for LED-based lamps primarily focus on supplying electricity and data, lacking functionality beyond that and not effectively utilizing magnesium zinc oxide (MgZnO) for generating UV-C light for sterilization due to challenges with high voltage requirements causing heating issues.
Innovation Solution
A light emitting device comprising a first and second main layer of electrically conducting material with a light emitting unit in between, utilizing impact ionization to generate UV-C light, where the main layers are made of metals like aluminum, magnesium, or titanium with thicknesses between 0.5 mm to 5 mm, and an insulating material to prevent short-circuiting and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high voltage is applied to generate UV-C light through impact ionization, then UV-C light generation is enabled, but heating increases making the approach impossible
Solution Approach 1:
The patent introduces MgZnO as an intermediary material between the high voltage source and the light generation process. This material enables impact ionization to produce UV-C light while its specific properties help manage the thermal effects, acting as a mediator that facilitates the conversion of electrical energy to optical energy with reduced heating problems
Solution Approach 2:
The patent changes the material parameter by using MgZnO with specific composition ratios instead of conventional materials. By adjusting the magnesium zinc oxide composition and structural parameters, the device achieves efficient UV-C generation while controlling the thermal parameters that would otherwise make high voltage operation impossible
2Illumination intensity
If MgZnO is used for UV-C generation, then appropriate band gap energy is achieved, but practical application for sterilization lamps has not been realized
Solution Approach 1:
The patent uses composite material structure by integrating MgZnO layers with the composite board architecture. This composite approach combines the beneficial properties of MgZnO (appropriate band gap for UV-C) with the structural and electrical properties of the composite board, making practical sterilization lamp implementation feasible
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 device efficiently generates UV-C light for sterilization by minimizing heating and flexing risks, allowing for effective sterilization of surfaces and air with improved structural stability and safety.
Implementation Method 1
The present light emitting device especially allows that impact ionisation is employed to emit light, e.g. ultraviolet (UV) light, in particular UV-C light
Data Source
AI summary
The present invention relates to a light emitting device comprising a first main layer of an electrically conducting material, a second main layer of an electrically conducting material and a light emitting unit between the first main layer and the second main layer, wherein the light emitting unit comprises a light emitting layer, and wherein the first main layer and/or the second main layer has a light exit orifice aligned with a section of the light emitting layer. The light emitting device can utilise impact ionisation to emit UV-C light.