Dye-Sensitized Solar Cell Using Styryltriphenylamine Dye
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Solution Overview
Problem
Current solar cells face challenges with high manufacturing costs due to the need for high-purity silicon and low durability and efficiency of organic solar cells, while dye-sensitized solar cells using ruthenium complexes have resource limitations and stability issues.
Innovation Solution
A dye-sensitized photoelectric conversion element utilizing a conductive support with an oxide semiconductor electrode adsorbed by a dye represented by a specific formula, featuring a styryltriphenylamine structure for improved durability and electron transfer efficiency, combined with a charge transfer layer and counter electrode, to enhance photoelectric conversion efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inorganic solar cells using high purity silicon are used, then photoelectric conversion efficiency is improved, but manufacturing cost increases due to complicated purification processes
Solution Approach 1:
The invention changes the material parameter from high-purity silicon to oxide semiconductor with lower purity requirements, and changes the sensing mechanism parameter from direct silicon photoelectric conversion to dye-sensitized photoelectric conversion, thereby achieving good photoelectric conversion efficiency without requiring complicated high-purity material preparation processes
Solution Approach 2:
The invention uses a composite structure combining oxide semiconductor and organic dye materials, where the oxide semiconductor provides the photoelectric conversion function and the organic dye enhances light absorption, achieving efficient photoelectric conversion without requiring high-purity silicon
2Ease of manufacture
If organic solar cells are used, then manufacturing cost decreases and ease of manufacture is improved, but photoelectric conversion efficiency and durability worsen
Solution Approach 1:
The invention creates a composite material system combining oxide semiconductor and organic dye, where the oxide semiconductor provides structural stability and the organic dye provides efficient light absorption and photoelectric conversion, achieving both low cost and high efficiency
Solution Approach 2:
The invention optimizes the molecular structure parameters of the organic dye (using styryltriphenylamine structure with specific substituents) to improve photoelectric conversion efficiency and durability while maintaining low manufacturing cost
3Productivity
If ruthenium complex is used for dye sensitization, then photoelectric conversion efficiency is improved, but resource availability worsens due to supply uncertainty and high cost
Solution Approach 1:
The invention replaces expensive and scarce ruthenium complex with inexpensive and abundant organic dye materials, specifically styryltriphenylamine derivatives, which can be synthesized from readily available raw materials, thereby eliminating resource supply uncertainty and reducing cost
Solution Approach 2:
The invention changes the chemical composition parameter from metal-based ruthenium complex to organic dye molecules, maintaining photoelectric conversion efficiency while improving resource availability and reducing cost
4Productivity
If triphenylamine structure compound is used for dye sensitization, then photoelectric conversion efficiency is improved, but durability worsens due to oxidation resistance issues
Solution Approach 1:
The invention introduces electron-withdrawing groups at specific positions of the triphenylamine structure to create local electron-deficient regions that enhance oxidation resistance, while maintaining the overall photoelectric conversion efficiency of the molecule
Solution Approach 2:
The invention modifies the electronic structure parameters of the triphenylamine compound by introducing electron-withdrawing groups, changing the electron distribution and HOMO-LUMO energy levels to improve both photoelectric conversion efficiency and oxidation 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 solution achieves high photoelectric conversion efficiency and durability, overcoming the limitations of existing solar cells by using a low-cost oxide semiconductor and a stable organic dye, with the styryltriphenylamine structure providing resistance to oxidation and efficient electron transfer.
Implementation Method 1
an oxide semiconductor electrode comprising an oxide semiconductor which is adsorbed with a dye
Implementation Method 2
dye sensitized photoelectric conversion element
Implementation Method 3
efficient conversion of sunlight to electricity
Data Source
AI summary
A photoelectric conversion element comprising an electrically conductive support having thereon an oxide semiconductor electrode comprising an oxide semiconductor which is adsorbed with a dye, and a counter electrode facing the oxide semiconductor electrode through a charge transfer layer, wherein the dye is represented by Formula (1):