Plasma Lamp and Laser Processing for Semiconductor Materials
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Solution Overview
Problem
Current methods for processing insulator and semiconductor materials lack efficient automation and precision in treating large and small areas, with existing laser synthesis and pulsed thermal processing technologies not fully addressing the need for scalable and selective material transformation.
Innovation Solution
A method combining pulsed plasma lamp processing and laser processing within a vessel to treat insulator and semiconductor materials, allowing for both large-area and selective area processing by controlling electromagnetic radiation from a plasma lamp and a laser to diffuse dopants, metallize, or phase transform materials, with automated control systems managing pulse duration and frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser synthesis process is used to process insulator or semiconductor materials, then conducting electrodes, P-type semiconductors, N-type semiconductors, P-N junctions and other electronic devices can be formed, but the processing is limited to selective areas and lacks efficiency for large-area treatment
Solution Approach 1:
The patent combines laser processing and pulsed thermal processing into a single integrated system. The laser processing unit handles selective area treatment with high precision, while the pulsed thermal processing unit simultaneously or sequentially treats large areas, merging the advantages of both methods to resolve the contradiction between precision and efficiency
Solution Approach 2:
The processing system is designed with multi-functionality, capable of performing both selective area laser synthesis and large-area pulsed thermal processing. This universal system can adapt to different processing requirements (electrode formation, doping, phase transformation) and different area scales, eliminating the need for separate processing systems
2Productivity
If pulsed thermal processing is used to treat large areas, then large surface areas can be processed quickly with controlled heating, but the precision for selective area treatment is reduced
Solution Approach 1:
The processing system is segmented into distinct functional units: a laser processing unit for high-precision selective area treatment and a pulsed thermal processing unit for large-area treatment. This segmentation allows each unit to optimize its performance for its specific function while working together as an integrated system
Solution Approach 2:
The system dynamically adapts its processing mode based on requirements. The laser can be activated for high-precision work on specific areas, while the pulsed thermal processing provides rapid large-area treatment. The system can switch between modes or operate in combination, providing dynamic flexibility to resolve the precision-speed trade-off
3Reliability
If conventional processing methods are used, then material transformation can be achieved, but automation and control over pulse duration and frequency are insufficient
Solution Approach 1:
The system incorporates feedback control mechanisms that monitor processing parameters such as pulse duration, frequency, and power levels. Sensors detect material response in real-time, and the control system automatically adjusts parameters to maintain optimal processing conditions, ensuring reliable material transformation while implementing automated control
Solution Approach 2:
The processing system is designed to automatically regulate its own operation through self-service control mechanisms. The system autonomously manages pulse parameters, processing duration, and energy delivery based on pre-programmed sequences and real-time feedback, reducing manual intervention while maintaining high reliability of material transformation
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
Enables precise and efficient processing of insulator and semiconductor materials, achieving significant improvements in electrical conductivity and material transformation, particularly in wide bandgap semiconductors, with reduced thermal impact and the ability to fabricate complex devices like P-N junctions and solar collectors.
Implementation Method 1
A plasma lamp is pulsed onto the material in the presence of the first substance to treat large areas of the material with the first substance
Implementation Method 2
A laser is pulsed onto a selected region of the material to treat a selected area of the material with the second substance
Implementation Method 3
Pulses of infrared energy from the high density infrared plasma arc lamp can supply large power densities over large areas in short time frames in a controlled manner
Data Source
AI summary
A method is disclosed for processing an insulator material or a semiconductor material. The method includes pulsing a plasma lamp onto the material to diffuse a doping substance into the material, to activate the doping substance in the material or to metallize a large area region of the material. The method may further include pulsing a laser onto a selected region of the material to diffuse a doping substance into the material, to activate the doping substance in the material or to metallize a selected region of the material.