Diode device and method for manufacturing the same, and diode apparatus

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Solution Overview

Problem

The existing manufacturing processes for dual-function devices with electro-luminescence and photoelectric response properties are complex and have low universal applicability, making it difficult to simplify the production of such devices.

Innovation Solution

A diode device is designed with a stacked structure including a photo-detection layer made from nanocrystalline copper indium sulfide and an electroluminescent layer using oil-soluble nanocrystalline, with energy barriers between the layers not exceeding 1.5 eV, and a method for manufacturing this device using an alcohol-soluble phase inversion process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dual-function devices are manufactured using double heterojunction nanorod as active material, then electro-luminescence and photoelectric response properties are achieved, but the manufacturing process becomes complex and material universal applicability is reduced

Engineering Contradiction:
Improveelectro-luminescence and photoelectric response propertiesVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the photo-detection layer and electroluminescent layer into a single functional layer with stacked sub-functional layers. This integration allows the device to achieve both photoelectric response and electro-luminescence properties while simplifying the manufacturing process compared to using separate double heterojunction nanorods

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The functional layer design with controlled energy barrier differences (not more than 1.5 eV) between photo-detection and electroluminescent sub-layers enables universal applicability of the material system. This energy barrier control allows the same material platform to serve multiple functions, improving material universal applicability while maintaining device performance

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If dual-function devices are manufactured using double heterojunction nanorod as active material, then electro-luminescence and photoelectric response properties are achieved, but the manufacturing process becomes complex

Engineering Contradiction:
Improveelectro-luminescence and photoelectric response propertiesVSAvoidmanufacturing process simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the photo-detection layer and electroluminescent layer into a single functional layer with stacked sub-functional layers. This integration allows the device to achieve both photoelectric response and electro-luminescence properties while simplifying the manufacturing process compared to using separate double heterojunction nanorods

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent controls the energy barrier difference between photo-detection and electroluminescent sub-layers to be not more than 1.5 eV. This parameter control enables simplified manufacturing by ensuring proper charge carrier transport and device functionality without requiring complex process adjustments

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If material universal applicability is improved, then the manufacturing process can be simplified, but device performance may be compromised

Engineering Contradiction:
Improvematerial universal applicabilityVSAvoiddevice performance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The functional layer design with controlled energy barrier differences (not more than 1.5 eV) between photo-detection and electroluminescent sub-layers enables universal applicability of the material system. This energy barrier control allows the same material platform to serve multiple functions while maintaining device performance

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent controls the energy barrier difference between photo-detection and electroluminescent sub-layers to be not more than 1.5 eV. This parameter control enables simplified manufacturing by ensuring proper charge carrier transport and device functionality without requiring complex process adjustments

Inventive Principle:
Principle #35Parameter changes

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 diode device achieves both photo detection and electroluminescence functions, enabling the production of intelligent sensor devices with improved stability and applicability, and can automatically adjust brightness based on environmental light conditions.

Implementation Method 1

the photo-detection layer includes a nanocrystalline derived from a copper indium sulfide compound

Methodology Applied
Scientific EffectPhotoelectric conversion: Photoelectric Effect

Implementation Method 2

the electroluminescent layer includes an oil-soluble nanocrystalline

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS10593735B2Diode device and method for manufacturing the same, and diode apparatus
Publication Date: 2020.03.17 BOE TECHNOLOGY GROUP CO LTD
  • US10593735B2 patent drawing
  • US10593735B2 patent drawing
  • US10593735B2 patent drawing

AI summary

The present disclosure provides a diode device comprising a first electrode, a hole transport layer, a functional layer, an electron transport layer and a second electrode that are stacked, wherein the functional layer comprises at least one sub-functional layer each comprising a photo-detection layer and an electroluminescent layer which are stacked and a difference of energy barriers between the photo-detection layer and the electroluminescent layer is not more than 1.5 eV; the photo-detection layer comprises a nanocrystalline derived from a copper indium sulfide system compound, and the electroluminescent layer comprises an oil-soluble nanocrystalline. The present disclosure further provides a method for manufacturing a diode device, and a diode apparatus having both electro-luminescence and photoelectric response properties, and higher material universal applicability.