Transparent Conductive Film Using Nitrogen-Organic Buffer Layer
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Solution Overview
Problem
Existing methods for creating semi-transparent organic photoelectric conversion elements face challenges in achieving high transparency, photoelectric conversion efficiency, and durability due to issues with conductivity and manufacturing complexity.
Innovation Solution
A transparent conductive film is formed using a nitrogen-containing organic compound as a ground layer with a metal thin film layer containing a transition metal element of Group 11, allowing for high conductivity and transparency while maintaining durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent electrode composed of ITO is used in both the first electrode and the second electrode, then transparency is improved, but photoelectric conversion efficiency and durability deteriorate due to damage to the functional organic thin film during ITO formation
Solution Approach 1:
The patent introduces a buffer layer as an intermediary between the functional organic thin film and the transparent electrode. This buffer layer prevents direct contact and damage during electrode formation while maintaining electrical conductivity and transparency, thus resolving the contradiction between transparency and reliability
Solution Approach 2:
The patent changes the material parameters of the electrode structure by using alternative transparent conducting materials or modifying the ITO formation process parameters (such as deposition temperature, thickness control) to reduce damage to the organic thin film, thereby maintaining transparency while improving photoelectric conversion efficiency and durability
2Reliability
If a non-transparent metallic material is used for the second electrode, then conductivity is improved, but transparency deteriorates
Solution Approach 1:
The patent employs composite electrode structures that combine transparent conducting materials (such as ITO, FTO) with conductive polymers or metal nanomeshes. This composite approach achieves both high conductivity and transparency by integrating materials with complementary properties, resolving the contradiction between conductivity and transparency
3Reliability
If the metal thin film layer thickness is increased to improve conductivity, then electrical conductivity is improved, but transparency deteriorates
Solution Approach 1:
The patent optimizes the thickness parameter of the metal thin film layer to a specific range that balances conductivity and transparency. By precisely controlling the thickness parameter (typically in the nanometer range), the electrode achieves sufficient electrical conductivity while maintaining high transparency, resolving the contradiction between these two properties
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 solution provides a simple method to achieve high conductivity and transparency, resulting in improved photoelectric conversion efficiency and durability for semi-transparent organic photoelectric conversion elements.
Implementation Method 1
A transparent conductive film is formed using a nitrogen-containing organic compound as a ground layer with a metal thin film layer containing a transition metal element of Group 11
Implementation Method 2
light energy is directly converted into electric power by using a photoelectric conversion element utilizing the photovoltaic effect
Data Source
AI summary
Provided are a transparent conductive film having a simple manufacturing process and high transparency, high photoelectric conversion efficiency, and excellent durability and an organic photoelectric conversion element using this transparent conductive film.The transparent conductive film of the present invention is formed by laminating a ground layer which contains a nitrogen-containing organic compound and a metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm. In addition, the organic photoelectric conversion element of the present invention has a first electrode, a second electrode, and a photoelectric conversion layer present between the first electrode and the second electrode, and at least one of the first electrode and the second electrode of the organic photoelectric conversion element is a transparent conductive film formed by laminating the ground layer which contains the nitrogen-containing organic compound and the metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm.