Perovskite Photovoltaic Assembly for Incompatible Solution Chemistries
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Solution Overview
Problem
Existing photovoltaic devices face challenges in assembling layers deposited using incompatible solution chemistries, particularly with perovskite materials, which are sensitive to solvents used in interfacial layer deposition.
Innovation Solution
A method involving the fusion of perovskite precursor materials under controlled pressure and temperature, allowing for the assembly of photovoltaic device portions without requiring a traditional encapsulant layer, and using glass frits to seal the perimeter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If perovskite layers are deposited using solution chemistry, then the manufacturing process is economical and simple, but the perovskite layers are damaged by solvents used in interfacial layer deposition
Solution Approach 1:
The photovoltaic device is divided into separate portions that are fabricated independently and then assembled. The perovskite-containing portion is fabricated first, allowing the perovskite layer to be deposited and stabilized before assembly. This segmentation prevents subsequent solvent-based interfacial layer deposition from damaging the perovskite layer, as the device portions are joined through compression rather than additional solution processing.
2Reliability
If traditional encapsulant layers are used to protect perovskite layers, then the perovskite layers are protected from solvent damage, but the device complexity increases
Solution Approach 1:
The encapsulation function is merged into the assembly process itself. By compressing the pre-fabricated perovskite-containing portion with other device portions, the perovskite layer is protected from solvent exposure without requiring a separate encapsulant layer. The compression assembly serves both as the device structure and as the protective mechanism.
3Adaptability or versatility
If multiple layers are deposited using incompatible solution chemistries, then each layer can be optimized for its specific function, but the layers cannot be assembled together
Solution Approach 1:
The device is segmented into separate portions that can be fabricated using different solution chemistries optimized for each layer's specific requirements. Since each portion is fabricated independently, incompatible solvents do not interfere with each other. The portions are then assembled through compression, allowing layers with optimized but incompatible chemistries to coexist in the final device.
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
Enables the assembly of thin-film PV devices with adjacent layers produced by incompatible solution chemistries, protecting perovskite layers and eliminating the need for a separate encapsulant layer during substrate fitting.
Implementation Method 1
the first perovskite precursor material converting to a first perovskite material after the fusion of the first perovskite precursor material with the second perovskite material
Implementation Method 2
compressing the first photovoltaic device portion and the second photovoltaic device portion at a pressure sufficient to fuse the first perovskite precursor material to the second perovskite material
Data Source
AI summary
A method for manufacturing a photovoltaic device. The method comprises fabricating a first photovoltaic device portion with a first photoactive layer having a first face comprising a first perovskite precursor material; fabricating a second photovoltaic device portion with a second photoactive layer having a second face comprising a second perovskite material or a second perovskite precursor material; arranging the first photovoltaic device portion and the second photovoltaic device portion such that the first face is in contact with the second face; and compressing the first photovoltaic device portion and the second photovoltaic device portion at a pressure sufficient to fuse the first perovskite precursor material to the second perovskite material or the second perovskite precursor material.