Fluorescent Silk Photoelectric Layer for Biocompatible Energy Conversion
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Solution Overview
Problem
Conventional photovoltaic and photodetector technologies face environmental and biocompatibility challenges due to non-biodegradable and toxic materials, and inefficiencies in light coupling, limiting their widespread adoption and use in biological systems.
Innovation Solution
A biotic photoelectric device utilizing a genetically hybridized far-red fluorescent protein and silk as a protein photo-sensitizer, integrated with an electron transport layer and electrolyte, enhancing light localization and conversion of photonic energy to electrical energy in a biocompatible and environmentally friendly manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional semiconductor-based photovoltaic cells are used, then photoelectric conversion efficiency is achieved, but environmental friendliness and biocompatibility deteriorate due to non-biodegradable and toxic materials
Solution Approach 1:
The patent combines fluorescent protein molecules with silk fibroin to create a composite photoactive material that integrates the light-absorbing properties of fluorescent proteins with the biocompatible, biodegradable characteristics of silk. This composite structure enables photoelectric conversion while maintaining environmental friendliness and biocompatibility, resolving the contradiction between efficiency and environmental harm.
Solution Approach 2:
The invention employs biodegradable silk-based materials that can naturally decompose after use, replacing persistent semiconductor materials. This approach accepts shorter operational lifespan in exchange for complete biodegradability and elimination of toxic waste, addressing the environmental friendliness concern while maintaining functional photoelectric conversion capability.
2Ease of operation
If conventional photodetectors are used in biological systems, then detection function is achieved, but biocompatibility deteriorates due to toxic materials
Solution Approach 1:
The silk-fluorescent protein composite provides a biocompatible platform for photodetection in biological systems. The silk matrix is inherently biocompatible and biodegradable, while the embedded fluorescent proteins provide light-absorbing and electron-generation capabilities, enabling detection functions without toxic material exposure to biological systems.
Solution Approach 2:
The biodegradable silk-based photodetector can naturally decompose within biological systems after completing its detection function, eliminating the need for surgical removal or special disposal procedures. This self-degrading property enhances biocompatibility while maintaining full detection functionality during the operational period.
3Productivity
If traditional solar cells are manufactured at high volumes, then productivity increases, but manufacturing cost and environmental impact worsen
Solution Approach 1:
The invention utilizes silk-based materials that can be produced through biological processes (silkworm cultivation) rather than energy-intensive semiconductor manufacturing. This biological production pathway reduces both direct manufacturing costs and environmental impact at scale, while the materials maintain sufficient photoelectric conversion capability for practical applications.
Solution Approach 2:
The patent changes the fundamental material parameters from inorganic semiconductors to organic silk-fluorescent protein composites, enabling production through biological systems. This parameter change transforms the manufacturing paradigm from high-energy, high-cost semiconductor fabrication to lower-energy, more sustainable biological production, reducing both cost and environmental impact at high volumes.
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 device achieves efficient conversion of solar energy to electrical energy with improved biocompatibility and environmental friendliness, leveraging the properties of transgenic silk to enhance light coupling and reduce material toxicity, enabling scalable and industrially relevant production.
Implementation Method 1
a biotic photoelectric device utilizing a genetically hybridized far-red fluorescent protein and silk as a protein photo-sensitizer, integrated with an electron transport layer and electrolyte, enhancing light localization and conversion of photonic energy to electrical energy
Implementation Method 2
enhancing light localization and conversion of photonic energy to electrical energy
Data Source
AI summary
A photoelectric device is disclosed. The photoelectric device includes a first electrode, a second electrode, and an electrolyte disposed between the first electrode and the second electrode. The second electrode includes a transparent layer for allowing light to penetrate into the second electrode, an electron transport layer coupled to the transparent layer, and a genetically hybridized fluorescent silk layer as a photo-sensitizer coupled to the electron transport layer.