LED Structure with Carbon Nanotube N-Type Layer
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Solution Overview
Problem
Conventional light emitting diodes (LEDs) have complex structures requiring an active layer between N-type and P-type semiconductor layers, which complicates their design and operation.
Innovation Solution
A light emitting diode structure comprising an insulating substrate, a P-type semiconductor layer, a semiconductor carbon nanotube layer, an MgO layer, a functional dielectric layer, and electrodes, where the semiconductor carbon nanotube layer acts as both the N-type semiconductor and active layer, simplifying the structure and enhancing stability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional LED structure with separate N-type semiconductor layer, active layer, and P-type semiconductor layer is used, then the LED can achieve light emission function, but the device structure becomes complex
Solution Approach 1:
The patent combines the N-type semiconductor layer and active layer into a single integrated structure. The N-type semiconductor layer serves dual functions as both the semiconductor material and the active region where light emission occurs, eliminating the need for a separate active layer and reducing structural complexity while maintaining light emission functionality
Solution Approach 2:
The N-type semiconductor layer is designed to perform multiple functions simultaneously: it acts as the semiconductor material for charge carrier injection and as the active layer for light emission. This multi-functional design simplifies the overall device structure by reducing the number of required layers
2Ease of manufacture
If a conventional LED structure with multiple layers is used, then the LED can emit light, but the manufacturing process becomes more difficult
Solution Approach 1:
By merging the N-type semiconductor layer and active layer into one integrated structure, the patent reduces the number of fabrication steps required. Instead of separately forming the N-type layer, active layer, and P-type layer, the invention simplifies the manufacturing process by eliminating the active layer formation step while maintaining the necessary light emission function
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 simplified structure improves the LED's stability and efficiency by allowing the semiconductor carbon nanotube layer to function as both the N-type semiconductor and active layer, leading to prolonged lifespan and enhanced performance.
Implementation Method 1
LEDs are semiconductors that convert electrical energy into light
Implementation Method 2
The MgO layer is located on the semiconductor carbon nanotube layer... holes in the P-type semiconductor layer and photons in the N-type semiconductor layer can enter the active layer and combine with each other to emit visible light
Data Source
AI summary
An light emitting diode includes an insulating substrate, a P-type semiconductor layer, a semiconductor carbon nanotube layer, an MgO layer, a functional dielectric layer, and a first electrode, and a second electrode. The P-type semiconductor layer is located on the insulating substrate. The semiconductor carbon nanotube layer is located on the P-type semiconductor layer. The MgO layer is located on the semiconductor carbon nanotube layer. The functional dielectric layer covers the MgO layer. The first electrode is electrically connected to the P-type semiconductor layer. The second electrode is electrically connected to the semiconductor carbon nanotube layer.