2D TMD Monolayer Defect Removal for Leakage-Resistant Electronics
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Solution Overview
Problem
Conventional methods of forming 2D materials result in significant crystalline defects, leading to non-uniform local electron densities and current leakage, which negatively impact the performance and reliability of semiconductor devices.
Innovation Solution
A method involving laser treatment processes is employed to selectively energize and eliminate crystalline defects in 2D materials by exposing them to specific frequencies of electromagnetic radiation based on vibrational spectra analysis, optionally combined with thermal annealing and remote plasma treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to form 2D materials, then the formation process is simple and fast, but significant crystalline defects are introduced leading to non-uniform electron densities and current leakage
Solution Approach 1:
The patent applies preliminary action by performing laser treatment and thermal annealing on 2D materials immediately after formation, before the materials are incorporated into semiconductor devices. This preliminary defect elimination process addresses crystalline defects early in the manufacturing sequence, preventing defect propagation to final devices while maintaining overall process efficiency
Solution Approach 2:
The patent replaces conventional mechanical or chemical defect removal methods with laser-based electromagnetic radiation treatment. The laser treatment process uses photons to selectively energize and eliminate crystalline defects through a non-contact, precision-based mechanism that substitutes traditional mechanical intervention
2Reliability
If laser treatment processes are applied to eliminate crystalline defects, then manufacturing precision improves, but process complexity and treatment time increase
Solution Approach 1:
The patent utilizes parameter changes by varying laser treatment parameters (wavelength, power, pulse duration) and thermal annealing conditions (temperature, atmosphere, duration) to optimize defect elimination efficiency. By adjusting these parameters, the process achieves high defect removal rates while minimizing treatment time and energy consumption
Solution Approach 2:
The patent employs periodic action through pulsed laser treatment sequences followed by thermal annealing cycles. This periodic application of energy allows controlled defect elimination while managing heat accumulation and preventing material degradation, thereby reducing total treatment time compared to continuous processing
3Manufacturing precision
If laser treatment is used to remove crystalline defects, then electrical properties improve, but energy consumption increases
Solution Approach 1:
The patent applies local quality by using focused laser beams that selectively treat only regions containing crystalline defects within the 2D material. This localized approach concentrates energy where needed, eliminating defects while minimizing overall energy consumption compared to blanket treatment of entire material areas
Solution Approach 2:
The patent replaces energy-intensive mechanical or chemical etching processes with laser-based defect removal. The laser treatment achieves defect elimination through targeted electromagnetic radiation that requires less total energy than conventional methods while maintaining or improving electrical property uniformity
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 method significantly reduces crystalline defect density, enhancing the electrical properties of 2D materials and improving the performance and reliability of semiconductor devices.
Implementation Method 1
selecting at least one frequency of electromagnetic radiation to expose the 2D material to at least partially based on a comparison of vibrational spectra for a crystalline-defect-free form of the 2D material and a crystalline-defect-laden form of the 2D material
Implementation Method 2
subjecting the 2D material to at least one laser treatment process to selectively energize, mobilize, and at least partially eliminate crystalline defects
Implementation Method 3
optionally combined with thermal annealing and remote plasma treatment
Data Source
AI summary
A device comprises a 2D material structure including one or more monolayers of a transition metal dichalcogenide substantially free of each of X-interstitial defects, X-vacancy defects, M-interstitial defects, M-vacancy defects, MX-vacancy defects, and XX-vacancy defects. The electronic system comprises at least one device and peripheral circuitry electrically connected to the at least one device. The at least one device includes at least one semiconductor device structure comprising a 2D material structure. The 2D material structure includes one or more monolayers of a transition metal dichalcogenide substantially free of each of X-interstitial defects, X-vacancy defects, M-interstitial defects, M-vacancy defects, MX-vacancy defects, and XX-vacancy defects. Additional electronic system is also described.