Perovskite Solar Cell Electrode Layout for Single-Step Scribing
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Solution Overview
Problem
Perovskite solar cells have a complex preparation process due to the need for separate scribing steps in the perovskite functional layer and electrode layer, which can lead to increased series resistance and instability.
Innovation Solution
A solar cell design with a conductive layer, grid line layer, perovskite functional layer, and electrode layer, where the grid line layer facilitates electrical connection between electrodes and conductive portions, allowing for a single scribing step to penetrate both layers, simplifying the preparation process and reducing series resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate scribing steps are performed in the perovskite functional layer and electrode layer, then the solar cell structure can be formed, but the preparation process becomes complex and series resistance increases
Solution Approach 1:
The patent combines the scribing of the perovskite functional layer and electrode layer into a single scribing step by using a mask layer with pre-formed openings. This allows simultaneous patterning of both layers through one scribing operation, eliminating the need for separate scribing steps and reducing process complexity while maintaining structural integrity and reducing series resistance
2Reliability
If separate scribing steps are performed in the perovskite functional layer and electrode layer, then the solar cell structure can be formed, but production time increases
Solution Approach 1:
The patent merges multiple scribing operations into a single step by using a mask layer that defines the patterns for both the perovskite functional layer and electrode layer. This single scribing step simultaneously creates the necessary structures in both layers, significantly reducing production time while ensuring proper structural formation and minimizing series resistance
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 simplified preparation process enhances the stability and efficiency of perovskite solar cells by eliminating separate scribing steps and minimizing series resistance, leading to improved performance and reduced production time.
Implementation Method 1
Perovskite solar cells refer to cells that use perovskite materials as the light-absorbing layer. Due to the significant performance advantages of perovskite materials, such as high light absorption coefficient, carrier mobility, and direct and tunable optical bandgap
Data Source
AI summary
A solar cell, a preparation method thereof, and an electric apparatus are described The solar cell includes a substrate, a conductive layer, a grid line layer, a perovskite functional layer, and an electrode layer, where the conductive layer includes conductive portions with a first gap between the conductive portions, the grid line layer includes a plurality of grid lines, the perovskite functional layer includes functional portions with a second gap between the functional portions, each grid line is located between the first gap and the second gap that are adjacent to each other, the electrode layer includes a plurality of electrodes, and the electrodes are electrically connected to the grid lines.