Perovskite Solar Cell Electrode with Carbon Base and Buffer Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for manufacturing photoelectric conversion elements, such as solar cells, using organic or hybrid photoelectric conversion materials face challenges in increasing productivity while maintaining efficiency and durability, particularly in the integration of electrodes and photoelectric conversion layers.
Innovation Solution
A photoelectric conversion element is designed with a first electrode, a second electrode featuring a carbon-based base member impregnated with a carrier transport material, and a perovskite photoelectric conversion layer, where the second electrode includes a first layer for efficient charge transport and a moisture-resistant layer to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If photoelectric conversion elements are produced by coating or printing methods, then manufacturing cost is reduced and productivity is improved, but integration quality and durability between electrodes and photoelectric conversion layers may be compromised
Solution Approach 1:
The patent applies preliminary action by forming a buffer layer between the electrode and photoelectric conversion layer before final assembly. This buffer layer is prepared in advance to ensure proper integration and protect against potential delamination or contact issues that could compromise durability in mass-produced elements
Solution Approach 2:
The patent uses composite materials by combining the buffer layer (made from materials like PEDOT:PSS, polyaniline, or polythiophene) with the electrode and photoelectric conversion layer. This composite structure enhances overall durability while maintaining compatibility with low-cost coating and printing manufacturing methods
2Power
If contact surface area between electrode and photoelectric conversion layer is increased, then charge extraction efficiency is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs porous materials by using a buffer layer with controlled porosity that increases the effective contact surface area between the electrode and photoelectric conversion layer. This porous structure enhances charge extraction efficiency without requiring complex device architecture or additional manufacturing steps
Solution Approach 2:
The patent applies local quality by creating a buffer layer with spatially varying properties - the layer has different porosity, thickness, or material composition in different regions to optimize charge extraction at the electrode interface while maintaining overall device simplicity and ease of manufacturing
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
This configuration improves the productivity and durability of photoelectric conversion elements by increasing the contact surface area for charge extraction and reducing moisture sensitivity, maintaining high efficiency over extended periods.
Implementation Method 1
a photoelectric conversion layer, and a first layer. The second electrode includes a base member and a first material portion. The base member includes a plurality of structure bodies including carbon. The first material portion includes a carrier transport material and is provided between the structure bodies. The photoelectric conversion layer is provided between the first electrode and the second electrode. The photoelectric conversion layer includes a material having a perovskite structure.
Implementation Method 2
The first material portion includes a carrier transport material and is provided between the structure bodies
Implementation Method 3
The base member includes a plurality of structure bodies including carbon
Data Source
AI summary
According to one embodiment, a photoelectric conversion element includes a first electrode, a second electrode, a photoelectric conversion layer, and a first layer. The second electrode includes a base member and a first material portion. The base member includes a plurality of structure bodies including carbon. The first material portion includes a carrier transport material and is provided between the structure bodies. The photoelectric conversion layer is provided between the first electrode and the second electrode. The photoelectric conversion layer includes a material having a perovskite structure. The first layer is provided between the photoelectric conversion layer and the second electrode. The first layer includes the carrier transport material.