Dye Adsorption Apparatus for Solar Cells
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Solution Overview
Problem
Conventional dye adsorption methods for dye-sensitized solar cells face challenges in achieving uniform dye distribution and high efficiency due to slow adsorption rates and interference from surface tension, leading to reduced photoelectric conversion efficiency and stability across different batches.
Innovation Solution
A dye adsorption method and apparatus that injects dye between electrodes, using a multi-way control valve and liquid-driving pump to push dye into porous structures, overcoming surface tension and allowing uniform distribution, and a cleaning phase to remove excess dye layers for improved stability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional dye adsorption methods are used, then the process is simple, but the dye distribution is non-uniform and adsorption rate is slow
Solution Approach 1:
The patent applies hydraulic principles by using liquid flow to transport dye molecules through capillary action into the porous electrode structures. The liquid-phase dye solution is pumped through the electrodes, enabling uniform penetration and adsorption throughout the porous network, thereby achieving both high adsorption rate and uniform distribution simultaneously
Solution Approach 2:
The patent utilizes the porous structure of the electrodes to enable deep penetration of dye molecules. The liquid-phase dye solution flows through the porous network via capillary action, ensuring uniform distribution throughout the entire electrode volume rather than just surface adsorption, which resolves the contradiction between adsorption rate and uniformity
2Productivity
If conventional dye adsorption methods are used, then fewer process steps are required, but photoelectric conversion efficiency is reduced
Solution Approach 1:
The patent implements a preliminary cleaning step before dye adsorption where the electrode is first cleaned with solvent to remove contaminants and excess surface dye. This preliminary action ensures that subsequent dye adsorption occurs uniformly on a clean surface, improving photoelectric conversion efficiency by ensuring proper dye-electrode contact
Solution Approach 2:
The patent employs continuous flow dye adsorption where dye solution continuously flows through the electrodes rather than static immersion. This continuous action ensures complete penetration and uniform adsorption throughout the porous structure, maximizing photoelectric conversion efficiency while maintaining a relatively simple process
3Reliability
If conventional dye adsorption methods are used, then manufacturing is simpler, but batch-to-batch stability is poor
Solution Approach 1:
The patent uses controlled liquid flow through the electrodes to ensure reproducible and uniform dye distribution in every batch. The hydraulic system allows precise control of flow rate and duration, ensuring consistent adsorption conditions across different batches, thereby improving batch-to-batch stability despite the increased apparatus complexity
Solution Approach 2:
The patent controls key parameters such as flow rate, dye concentration, temperature, and adsorption time to ensure reproducible results across batches. By maintaining consistent parameter values and using the multi-way valve for precise flow control, the system achieves high batch stability
4Manufacturing precision
If multi-way control valve and liquid-driving pump are used, then dye distribution is uniform, but device complexity increases
Solution Approach 1:
The multi-way control valve serves multiple functions: controlling dye flow to electrodes, directing cleaning solution flow, and managing fluid pathways between different chambers. This single component performs what would otherwise require multiple separate valves, reducing overall system complexity while maintaining precise control for uniform dye distribution
Solution Approach 2:
The liquid-phase dye solution acts as an intermediary carrier that transports dye molecules uniformly through the porous electrodes. The liquid medium ensures even distribution by flowing through the entire porous network, achieving high manufacturing precision with a relatively simple liquid delivery system
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 dye distribution and adsorption speed, resulting in higher open circuit voltage, short circuit current density, fill factor, and solar cell efficiency, while ensuring stability across batches and enabling the production of multicolor electrodes.
Implementation Method 1
overcoming surface tension and allowing uniform distribution
Implementation Method 2
the dye molecules are adsorbed on the surface of the porous structure and form chemical bonding with the metal-oxide-semiconductor
Data Source
AI summary
A dye adsorption method and a dye adsorption apparatus is provided in this disclosure. The dye adsorption method includes a dye adsorption step. In the dye adsorption step, a dye is injected into and flowed through a space between two electrodes of a solar cell facing each other to obtain at least one dye-adsorbed electrode.