Microbe-Based Voltaic Cell for Broad-Spectrum Solar Conversion
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Solution Overview
Problem
Current solar panel technologies face inefficiencies due to susceptibility to overheating, geographical limitations, high fabrication costs, and inability to harness ultraviolet and infrared wavelengths, leading to reduced light conversion to electricity, especially in hot conditions.
Innovation Solution
A microbe-based voltaic cell utilizing a buffer system with ionically conductive medium, electron donor populations of specific microbes, and electron siphons to convert chemical and light energy into electrical energy, allowing for customizable light-to-electricity conversion across various conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solar panels use wafer-based crystalline silicon cells or thin-film cells, then light conversion to electricity is achieved, but the cells become fragile and require multiple protective layers, increasing device complexity and fabrication cost
Solution Approach 1:
The patent replaces conventional inorganic semiconductor materials (crystalline silicon, thin-film cells) with organic photovoltaic materials that inherently provide both light conversion functionality and mechanical flexibility, eliminating the need for multiple protective layers while maintaining productivity
Solution Approach 2:
The invention uses composite organic photovoltaic materials that integrate light absorption, charge generation, and structural integrity in a single material system, reducing device complexity compared to conventional inorganic cells that require separate protective layers
2Productivity
If solar panels are deployed in hot and sunny environments, then light conversion occurs, but the cells overheat and efficiency drops by 1.1% for every degree Celsius above 42-44°C
Solution Approach 1:
The patent changes the material parameters from conventional inorganic semiconductors to organic photovoltaic materials with different thermal characteristics that maintain efficiency at higher temperatures, allowing operation in hot environments without significant productivity loss
3Productivity
If conventional solar panels use reflective layering to focus light, then light conversion efficiency increases, but localized heat buildup reaches up to 800 degrees Celsius causing damage
Solution Approach 1:
The invention replaces reflective layering and light-focusing mechanical structures with organic photovoltaic materials that convert a broad spectrum of light directly, eliminating localized heat buildup while maintaining productivity through inherent material properties
4Productivity
If conventional solar panels are designed for cold and sunny environments, then maximal efficiency is achieved, but geographical effectiveness is limited
Solution Approach 1:
The patent creates organic photovoltaic panels that function effectively across diverse geographical conditions (hot/cold, sunny/diffuse light) by utilizing the flexible nature of organic materials to adapt to various environmental parameters, achieving both productivity and versatility
5Productivity
If existing photovoltaic panels attempt to harness ultraviolet and infrared wavelengths, then light conversion range increases, but efficiency remains low at 3-4%
Solution Approach 1:
The invention employs composite organic photovoltaic materials with tailored molecular structures that inherently absorb across ultraviolet, visible, and infrared wavelengths with high efficiency, achieving both broad spectrum utilization and high productivity without requiring complex multi-junction designs
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 microbe-based voltaic cell achieves high light-to-electricity conversion rates with lower energy fabrication costs and reduced geographical constraints, maintaining efficiency across a broad temperature range and light intensities, including diffuse light and ultraviolet/far-red wavelengths.
Implementation Method 1
an electron donor population comprising a first species of microbe having a first primary metabolic pathway and a second species of microbe having a second primary metabolic pathway
Implementation Method 2
the electron donor population may further comprise a photosensitive material
Implementation Method 3
a buffer containing an ionically conductive medium
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Presented herein is a voltaic cell containing light harvesting antennae or other biologically-based electron generating structures optionally in a microbial population, an electron siphon population having electron conductive properties with individual siphons configured to accept electrons from the light harvesting antennae and transport the electrons to a current collector, an optional light directing system (e.g., a mirror), and a regulator having sensing and regulatory feedback properties for the conversion of photobiochemical energy and biochemical energy to electricity. Also presented herein is a voltaic cell having electricity-generating abilities in the absence of light. Also presented herein is the use of the voltaic cell in a solar panel.