M-O Coated Nitride Nanostructures for Stable Light Emission
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Solution Overview
Problem
Existing small light emitting devices using semiconductor nanocrystals face challenges in maintaining robust electrical/magnetic properties and stability during subsequent production processes, particularly due to issues with agglomeration and surface damage of one-dimensional nanostructures like Group 13 metal nitride-based rods.
Innovation Solution
A luminescent nanostructure is developed with a semiconductor nanocrystal comprising Group 13 metal nitride and an organic compound with an M-O moiety (M being Ti, Al, Zr, or Si) bound to its surface, which enhances dispersibility, surface charge control, and electrical/magnetic properties, thereby improving process stability and maintaining intrinsic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If semiconductor nanocrystals are used in small light emitting devices, then the device size is reduced, but the electrical/magnetic properties and stability deteriorate during subsequent production processes
Solution Approach 1:
The patent uses a composite structure consisting of a semiconductor nanocrystal core (Group 13 metal nitride) coated with an organic compound shell (containing M-O moiety where M is Ti, Al, Zr, Sn, or Si). This composite structure allows the device to maintain small size while the organic shell provides protection against agglomeration and surface damage, thereby preserving electrical and magnetic properties during production processes.
Solution Approach 2:
The organic compound shell acts as an intermediary layer between the semiconductor nanocrystal and the production environment. This intermediary protects the nanocrystal surface from damage and prevents agglomeration, maintaining the intrinsic properties of the nanocrystal while enabling small device size.
2Length of moving object
If one-dimensional nanostructures are used, then the device size is reduced, but agglomeration and surface damage occur during subsequent processes
Solution Approach 1:
The one-dimensional nanostructure is designed as a composite with a semiconductor nanocrystal core and an organic compound shell. The organic shell prevents agglomeration and protects the surface of the nanostructure, maintaining its stability and intrinsic properties during subsequent production processes while keeping the structure small in size.
Solution Approach 2:
The organic compound shell serves as a protective intermediary that prevents direct interaction between the nanostructure surface and the production environment, thereby preventing surface damage and agglomeration while maintaining the small one-dimensional structure.
3Ease of operation
If the nanostructure surface is exposed, then the intrinsic properties can be accessed, but the properties are damaged during subsequent processes
Solution Approach 1:
The organic compound shell acts as a protective intermediary that allows the nanostructure to maintain its intrinsic properties while being protected from damage during subsequent production processes. The shell is designed to be compatible with various processing conditions while preserving the electrical and magnetic properties of the core.
Solution Approach 2:
The composite structure with protected surface allows the intrinsic properties of the semiconductor nanocrystal to be accessed and utilized while the organic shell provides ongoing protection during processing, resolving the contradiction between surface accessibility and property maintenance.
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 luminescent nanostructure exhibits improved dispersion characteristics, process stability, and light emitting properties, making it suitable for use in light emitting devices and display devices.
Implementation Method 1
an organic compound having an M-O moiety (wherein M is Ti, Al, Zr, Sn, or Si) that is bound to a surface (e.g., at least a portion of the surface) of the luminescent nanostructure
Data Source
AI summary
A luminescent nanostructure, a production method for making the luminescent nanostructure, and an electronic device including the luminescent nanostructure. The luminescent nanostructure includes a semiconductor nanocrystal including a Group 13 metal nitride. The luminescent nanostructure has an aspect ratio of greater than or equal to about 1, and an organic compound having an M-O moiety, wherein M is Ti, Al, Zr, Sn, or Si that is bound to at least a portion of the surface of the luminescent nanostructure.