Aluminum Compound Precursor for Stable Semiconductor Thin Films
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Solution Overview
Problem
The rapid down-scaling of semiconductor devices requires materials that can form uniform thin films with improved thermal stability, especially in complex and miniaturized three-dimensional structures, which existing aluminum compounds fail to achieve effectively.
Innovation Solution
An aluminum compound represented by Formula 1, with specific bonding structures such as Al—N or Al—O bonds, is used as a deposition precursor, providing thermal stability and a wide deposition window, allowing for the formation of thin films with high density and improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional aluminum compounds are used for thin film deposition, then deposition can be performed, but thermal stability is insufficient and uniform thickness cannot be achieved in complex three-dimensional structures
Solution Approach 1:
The patent modifies the molecular structure of aluminum compounds by introducing specific ligands (β-diketonate, amine, alcohol groups) to change thermal stability parameters. This enables the compound to maintain stability at higher temperatures while still forming uniform thin films in complex three-dimensional structures through controlled decomposition and deposition processes
Solution Approach 2:
The invention creates composite aluminum compounds combining aluminum centers with multiple types of organic ligands (β-diketonate, amine, alcohol groups). This composite structure provides both thermal stability for high-temperature processing and controlled reactivity for uniform film deposition in miniaturized three-dimensional semiconductor structures
2Manufacturing precision
If deposition temperature is increased to improve film properties, then film quality improves, but process window becomes narrower and manufacturing becomes more difficult
Solution Approach 1:
The patent changes the thermal decomposition characteristics of the aluminum compound through ligand selection, enabling deposition at higher temperatures (300-500°C) with a broader process window. The modified compound maintains stability up to higher temperatures while decomposing at controlled rates for uniform film formation, expanding the acceptable temperature range for manufacturing
3Temperature
If aluminum compound structure is modified to improve thermal stability, then deposition temperature can be increased, but compound complexity increases
Solution Approach 1:
The patent introduces specific functional groups (β-diketonate, amine, alcohol) at local positions around the aluminum center to provide targeted thermal stability improvements. This localized modification approach enables higher deposition temperatures without requiring complete restructuring of the entire compound, managing complexity through focused chemical modifications
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 aluminum compound achieves high thermal decomposition temperatures, enabling deposition processes at higher temperatures and reducing process limitations, resulting in thin films with enhanced properties and ease of transportation due to its low melting point and low impurity concentration.
Implementation Method 1
The aluminum compound achieves high thermal decomposition temperatures, enabling deposition processes at higher temperatures
Implementation Method 2
forming a thin film using the deposition precursor
Data Source
AI summary
Provided are an aluminum compound and a method for manufacturing a semiconductor device using the same. The aluminum compound may be represented by Formula 1.