Light-Receiving Device Using Aromatic Monoamine Hole-Transport Layers
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Solution Overview
Problem
Current light-receiving devices and light-emitting and light-receiving apparatuses face challenges in achieving high convenience, reliability, and efficiency due to limitations in materials and structures for effective light sensing and emission.
Innovation Solution
A light-receiving device with a light-receiving layer between electrodes, comprising an active layer and a hole-transport layer with specific organic compounds, such as aromatic monoamine compounds, and an electron-transport layer with π-electron deficient heteroaromatic compounds, enhancing carrier transport and light sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used in light-receiving devices, then device complexity is reduced, but sensitivity and reliability deteriorate
Solution Approach 1:
The patent applies parameter changes by specifying precise chemical structural parameters of organic compounds in the hole-transport layer. It defines compounds with specific skeletons (biphenylamine, carbazolylamine, dibenzofuranylamine, dibenzothiophenylamine, fluorenymine, spirofluorenymine) and molecular formulas (Gh-1 to Gh-6), transforming the material selection from general categories to specific chemical structures with defined HOMO levels and charge transport properties, thereby improving sensitivity while maintaining manageable complexity through systematic material design
Solution Approach 2:
The patent employs composite materials by combining specific organic compounds with complementary functions in a multi-layer structure. The hole-transport layer contains compounds with specific aromatic or heteroaromatic monoamine skeletons, while the electron-transport layer contains π-electron deficient heteroaromatic compounds. This composite approach integrates materials with optimized HOMO levels and charge transport characteristics, achieving enhanced reliability and sensitivity through synergistic material combinations
2Reliability
If conventional organic compounds are used in the hole-transport layer, then ease of manufacture is improved, but carrier transport efficiency and light sensitivity deteriorate
Solution Approach 1:
The patent transforms material selection from conventional general organic compounds to specific compounds with defined chemical parameters. It specifies compounds containing particular skeletons (biphenylamine, carbazolylamine, dibenzofuranylamine, dibenzothiophenylamine, fluorenymine, spirofluorenymine) with controlled HOMO levels and molecular structures (Gh-1 to Gh-6), enabling optimized carrier transport efficiency while providing clear manufacturing guidelines through precise structural definitions
Solution Approach 2:
The patent applies local quality by optimizing specific regions of the organic compound molecules for particular functions. The hole-transport layer compounds are designed with specific aromatic or heteroaromatic monoamine skeletons that provide localized charge transport capabilities, while the electron-transport layer uses π-electron deficient heteroaromatic compounds with complementary local electronic properties, achieving enhanced overall device performance through functionally optimized molecular regions
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 proposed solution improves the sensitivity and reliability of light-receiving devices, enabling efficient light sensing and emission, and can be integrated into display apparatuses for improved imaging and fingerprint authentication.
Implementation Method 1
The hole-transport layer includes a first organic compound... enhancing carrier transport
Implementation Method 2
an electron-transport layer with π-electron deficient heteroaromatic compounds, enhancing carrier transport
Implementation Method 3
a light-receiving layer between a pair of electrodes... enabling efficient light sensing
Data Source
AI summary
A light-receiving device that is highly convenient, useful, or reliable is provided. The light-receiving device includes a light-receiving layer between a pair of electrodes, the light-receiving layer includes an active layer and a hole-transport layer, the hole-transport layer contains a first organic compound, and the first organic compound is an aromatic monoamine compound or a heteroaromatic monoamine compound having at least one skeleton of biphenylamine, carbazolylamine, dibenzofuranylamine, dibenzothiophenylamine, fluorenylamine, and spirofluorenylamine. Alternatively, the light-receiving device includes a light-receiving layer between a pair of electrodes, the light-receiving layer includes an electron-transport layer and an active layer, the electron-transport layer contains a second organic compound, and the second organic compound includes a triazine ring.