Perovskite Absorption Layer Structure for Efficient Stable Solar Cells
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Solution Overview
Problem
Current perovskite solar cells suffer from limited photoelectric conversion efficiency and poor stability.
Innovation Solution
A method for preparing a solar cell involving a perovskite absorption layer constructed with monocrystal perovskite particles arranged in a bonding matrix, featuring convex surfaces for enhanced light absorption, and functional layers to improve stability and carrier transmission, along with a conductive layer structure for efficient power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional perovskite solar cell structure is used, then manufacturing is simpler, but photoelectric conversion efficiency is limited
Solution Approach 1:
The perovskite absorption layer is segmented into multiple monocrystal perovskite particles arranged in a bonding matrix, with at least some particles having convex surfaces protruding from the bonding matrix. This segmentation creates a three-dimensional light-trapping structure that enhances photoelectric conversion efficiency while maintaining manufacturing feasibility through controlled particle arrangement.
Solution Approach 2:
The invention transitions from a conventional two-dimensional perovskite layer to a three-dimensional structure with monocrystal particles protruding from the bonding matrix in multiple dimensions. This dimensional change creates convex surfaces that trap light through multiple reflection paths, significantly improving photoelectric conversion efficiency.
2Reliability
If conventional perovskite solar cell structure is used, then production is easier, but stability is poor
Solution Approach 1:
The invention uses a composite structure combining monocrystal perovskite particles with a bonding matrix material. The monocrystal particles provide high stability and photoelectric conversion efficiency, while the bonding matrix ensures structural integrity and facilitates manufacturing. This composite approach maintains manufacturing ease while significantly improving stability.
3Use of energy by moving object
If monocrystal perovskite particles with convex surfaces are used, then light absorption is enhanced, but manufacturing complexity increases
Solution Approach 1:
The invention applies local quality by creating convex surfaces on specific monocrystal perovskite particles within the bonding matrix. These convex surfaces are strategically positioned to trap light through multiple reflection paths, enhancing light absorption efficiency in critical regions while maintaining overall structural simplicity.
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 method enhances the photoelectric conversion efficiency and stability of perovskite solar cells by improving light absorption and reducing decomposition probability of monocrystal perovskite particles, facilitating large-area production.
Implementation Method 1
A perovskite solar cell has a good development prospect due to a relatively long service life and relatively stable photoelectric conversion efficiency
Data Source
AI summary
A method for preparing a solar cell includes: providing a carrier plate and a separation auxiliary layer, forming a perovskite absorption layer, having a first side facing away from the separation auxiliary layer and a second side opposite to the first side and including a bonding matrix and monocrystal perovskite particles, over the separation auxiliary layer away from the carrier plate, at least some of the monocrystal perovskite particles having first convex surfaces and second convex surfaces protruding from the bonding matrix on the first and second side respectively, and a functional layer formed over a portion of the monocrystal perovskite particles; forming a first carrier transport layer and a first conductive layer sequentially on the first side of the perovskite absorption layer; removing the carrier plate and the separation auxiliary layer, and forming a second conductive layer on the second side of the perovskite absorption layer.