Multilayer Encapsulation for Moisture-Stable Perovskite Solar Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Perovskite solar cells suffer from decomposition in high-humidity, high-temperature, or oxygen-rich environments, leading to stability issues that hinder their industrialization.
Innovation Solution
An encapsulated perovskite solar cell module with an encapsulation component comprising alternately stacked inorganic and organic layers, where the organic layers are formed through evaporation of organic molecular materials, enhancing the encapsulating effect and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If perovskite solar cells are exposed to high-humidity, high-temperature, or oxygen-rich environments, then power conversion efficiency is initially high, but decomposition occurs leading to rapid performance degradation
Solution Approach 1:
The patent applies composite materials by creating a multi-layer encapsulation structure combining organic molecular materials and inorganic materials. This composite encapsulation layer provides both the necessary barrier properties and mechanical flexibility to protect perovskite solar cells from environmental degradation while maintaining high power conversion efficiency over extended periods
Solution Approach 2:
The encapsulation component creates an inert protective environment around the perovskite solar cell by forming a barrier that excludes oxygen and moisture. This inert atmosphere prevents the decomposition reactions that would otherwise occur in high-humidity, high-temperature, or oxygen-rich environments
2Reliability
If encapsulation layers are added to protect perovskite solar cells, then stability improves, but device complexity increases
Solution Approach 1:
The encapsulation component is segmented into multiple thin layers of organic molecular materials and inorganic materials stacked alternately. This segmentation provides superior barrier properties compared to single-layer structures while maintaining manageable device complexity through systematic layering
Solution Approach 2:
The patent employs thin film encapsulation using organic molecular materials that form flexible protective shells. These thin films provide effective environmental barrier protection without adding significant structural complexity or bulk to the device
3Reliability
If organic molecular materials are used in encapsulation, then encapsulating effect is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces traditional mechanical or solution-based coating methods with vapor phase deposition for forming organic molecular material layers. This substitution enables precise control of film thickness and uniformity while simplifying the manufacturing process and reducing precision requirements compared to solution processing
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 encapsulated structure effectively isolates the perovskite solar cells from moisture and oxygen, maintaining high power conversion efficiency over extended periods in adverse conditions.
Implementation Method 1
each of the at least one organic layer is made of an organic molecular material through an evaporation process
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to the technical field of perovskite cells, and particularly to an encapsulated perovskite solar cell module and a preparation method. The encapsulated perovskite solar cell module includes a substrate, a perovskite solar cell module, and an encapsulation component sequentially stacked from bottom to top, wherein a lower surface of the encapsulation component is in contact with an upper surface of the substrate to form an encapsulated structure, and the perovskite solar cell module is located within the encapsulated structure; and the encapsulation component includes at least two inorganic layers and at least one organic layer, the at least two inorganic layers and the at least one organic layer are alternately stacked, and an outermost layer of the encapsulation component is one of at least two inorganic layers, each of the at least one organic layer is made of an organic molecular material through an evaporation process. The encapsulation component of the present invention can improve the encapsulating effect of perovskite solar cell devices, solving the problem of decomposition of the perovskite solar cells in high-humidity, high-temperature, or oxygen-rich environments.