Correlated Electron Material Devices Using Dopant Diffusion
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Solution Overview
Problem
Current integrated circuit devices, particularly electronic switching devices, face challenges in achieving lower power consumption and higher speed while maintaining desirable impedance characteristics, scalability, and reliability, which are essential for advanced memory and logic applications.
Innovation Solution
The development of correlated electron materials (CEMs) that undergo rapid conductor-to-insulator transitions via quantum mechanical phenomena, such as Mott transitions, allowing for the creation of devices with variable impedance states, enabling efficient switching between conductive and insulative states, and thus optimizing impedance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional electronic switching devices are used, then device structure and operation are well-established, but power consumption is high and switching speed is limited
Solution Approach 1:
The patent changes the fundamental operating parameters of the switching device by using correlated electron materials that exhibit Mott transitions. This allows the device to switch between insulating and conducting states through changes in electron correlation effects rather than conventional drift-diffusion mechanisms, achieving both lower power consumption and faster switching speeds
Solution Approach 2:
The patent exploits the phase transition phenomenon in correlated electron materials where the material transitions between insulating and conducting phases. This phase transition mechanism enables rapid switching with low power consumption, as the transition is driven by electron correlation effects rather than thermal or conventional electrical mechanisms
2Quantity of substance
If device size is reduced for higher density, then storage density increases, but impedance control becomes more difficult
Solution Approach 1:
The patent changes the impedance control mechanism by using materials with inherently tunable impedance through doping and electrostatic gating. This allows precise impedance control even in miniaturized devices, as the impedance can be adjusted through material composition and electric field effects rather than relying solely on geometric dimensions
3Speed
If correlated electron materials are used, then switching speed and impedance characteristics improve, but manufacturing complexity increases
Solution Approach 1:
The patent uses doping atoms as intermediaries to control the properties of correlated electron materials. The dopant atoms mediate the electrical characteristics and stability of the CEM, simplifying the manufacturing process by providing a straightforward method to tune material properties without complex fabrication steps
Solution Approach 2:
The patent incorporates doping atoms during the deposition process itself, performing the doping action preliminarily rather than requiring separate post-fabrication doping steps. This preliminary doping action simplifies manufacturing by combining material deposition and property tuning into a single process step
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
CEMs enable the creation of devices with significantly reduced impedance, improved switching speeds, and lower power consumption, addressing the need for advanced memory and logic devices with enhanced performance and efficiency.
Implementation Method 1
doping of the conductive substrate may cause dopant species to diffuse into the correlated electron material
Implementation Method 2
correlated electron materials (CEMs) that undergo rapid conductor-to-insulator transitions via quantum mechanical phenomena, such as Mott transitions
Data Source
AI summary
Subject matter disclosed herein may relate to fabrication of correlated electron materials used, for example, to perform a switching function. In embodiments, a correlated electron material may be doped using dopant species derived from one or more precursors utilized to fabricate nearby structures such as, for example, a conductive substrate or a conductive overlay.