Perovskite Precursor Formulation for Stable Solid-State Solar Cells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current photovoltaic technologies face challenges in reducing costs and improving stability, particularly in solid-state dye-sensitized solar cells, which often suffer from leakage and corrosion issues with liquid electrolytes, and require more efficient charge transport materials.
Innovation Solution
The development of novel compositions and methods for photovoltaic cells using perovskite materials, hole-transport materials, and interfacial layers, such as spiro-OMeTAD and CsSnI3, to create high-stability, cost-effective solar cells with solid-state charge transport, eliminating the need for liquid electrolytes and enhancing charge transport efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid electrolytes are used in solid-state dye-sensitized solar cells, then charge transport can be achieved, but leakage and corrosion issues occur reducing stability
Solution Approach 1:
The patent changes the physical state parameter of the electrolyte from liquid to solid by using perovskite materials. This parameter change eliminates the harmful leakage and corrosion properties of liquid electrolytes while maintaining charge transport functionality through the solid-state perovskite structure.
Solution Approach 2:
The patent employs composite material structures combining perovskite materials with dye-sensitized components. The perovskite layer serves as a solid-state electrolyte that integrates charge transport functionality with structural stability, eliminating the need for separate liquid electrolyte components that cause leakage and corrosion.
2Productivity
If conventional photovoltaic materials are used, then cost reduction is achieved, but charge transport efficiency and stability are insufficient
Solution Approach 1:
The patent uses composite perovskite materials that combine the benefits of low-cost fabrication with high charge transport efficiency and improved stability. The perovskite structure enables efficient charge carrier mobility while maintaining structural integrity and resistance to degradation.
Solution Approach 2:
The patent optimizes parameters such as crystal structure, grain size, and compositional ratios in perovskite materials to simultaneously enhance charge transport efficiency and stability. By controlling synthesis parameters, the patent achieves high productivity in charge transport while maintaining reliable long-term performance.
3Reliability
If perovskite materials and advanced interfacial layers are used, then stability and charge transport are improved, but material complexity increases
Solution Approach 1:
The perovskite material serves multiple functions simultaneously: it acts as the photoactive layer, the solid-state electrolyte, and the charge transport medium. This multi-functionality reduces the need for separate interfacial layers and simplifies the overall device structure despite the advanced material chemistry involved.
Solution Approach 2:
The patent merges the functions of multiple conventional layers (photoactive layer, electrolyte, charge transport layer) into a single perovskite material system. This consolidation reduces material complexity by eliminating the need for multiple separate interfacial layers while maintaining or improving stability and charge transport performance.
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 use of perovskite materials and advanced interfacial layers in photovoltaic cells results in improved stability, reduced costs, and enhanced charge transport, leading to more efficient energy conversion from solar radiation without the drawbacks of liquid electrolytes.
Implementation Method 1
Use of photovoltaics (PVs) to generate electrical power from solar energy or radiation
Data Source
AI summary
A method for preparing photoactive perovskite materials. The method comprises the steps of preparing a bismuth halide precursor ink. Preparing a bismuth halide precursor ink comprises the steps of introducing a bismuth halide into a vessel; introducing a first solvent to the vessel; and contacting the bismuth halide with the first solvent to dissolve the bismuth halide to form the bismuth halide precursor ink; depositing the bismuth halide precursor ink onto a substrate; drying the bismuth halide precursor ink to form a thin film; annealing the thin film; and rinsing the thin film with a solvent comprising: a second solvent; a first salt selected from the group consisting of methylammonium halide, formamidinimum halide, guanidinium halide, 1,2,2-triaminovinylammonium halide, and 5-aminovaleric acid hydrohalide; and a second salt selected from the group consisting of methylammonium halide, formamidinimum halide, guanidinium halide, 1,2,2-triaminovinylammonium halide, and 5-aminovaleric acid hydrohalide.