Backsheet Coatings for Higher-Output Solar Panels

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Solution Overview

Problem

Existing solar cells and panels struggle to maximize electrical output and efficiency, particularly under varying light conditions, and are limited by the utilization of conventional coatings that primarily focus on the front surface, neglecting the potential of the backside and surrounding areas for enhanced energy conversion.

Innovation Solution

Application of specialized coatings on or near the backside of solar cells and panels, utilizing materials that reflect and modify electromagnetic wavelengths to enhance electrical production, including the use of coatings on separate surfaces like boards or substrates to increase efficiency and cooling effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional coatings are applied only on the front surface of solar cells, then the manufacturing process is simple and cost-effective, but the electrical output and efficiency are not maximized

Engineering Contradiction:

Improveelectrical outputVSAvoidcoating application complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent extends the coating application from the traditional front surface (two-dimensional) to include the backside and surrounding areas (three-dimensional space), utilizing the previously unused backside surface and near-field environment to enhance electrical output through additional electromagnetic wavelength reflection and modification

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The coating application is divided into multiple zones: front surface coating, backside coating, and surrounding area coating, allowing each region to be optimized independently for its specific function in maximizing electrical output while managing the overall complexity

Inventive Principle:

Principle #1Segmentation

2Productivity

If specialized coatings are applied on the backside and surrounding areas of solar cells, then electrical output increases by 10% to 100%, but the manufacturing complexity and cost increase

Engineering Contradiction:

Improveelectrical outputVSAvoidmanufacturing ease

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The specialized coatings are designed to perform multiple functions simultaneously: reflecting electromagnetic wavelengths, modifying light patterns, and providing cooling effects, thereby achieving significant electrical output improvements while consolidating multiple functions into a single manufacturing step

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent utilizes parameter changes in the coating materials (such as electromagnetic reflectivity, thermal properties, and optical characteristics) to enhance solar cell performance, allowing optimization of electrical output through material selection rather than complex structural modifications

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If solar cells operate under high temperature conditions, then the operational simplicity is maintained, but the electrical power output and lifespan degrade

Engineering Contradiction:

Improveoperational simplicityVSAvoidsolar cell lifespan

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent converts the harmful thermal energy that causes degradation into a beneficial cooling effect by applying specialized coatings that reflect infrared radiation and reduce heat absorption, thereby transforming the previously harmful high-temperature operation into a cooler, more reliable operating condition while maintaining operational simplicity

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 coatings significantly boost electrical output by 10% to 100% across various types of solar cells, improving efficiency and reducing heat-related degradation, with enhanced performance during low irradiance conditions and cloudy weather.

Implementation Method 1

utilizing materials that reflect and modify electromagnetic wavelengths to enhance electrical production

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

solar cell is comprised of a single silicon, or other material, photovoltaic cell

Methodology Applied

Scientific EffectPhotovoltaic Effect: Photovoltaic Effect

Implementation Method 3

modifying the wavelengths of electromagnetic radiation that is reflected into the solar cell by the backside coating

Methodology Applied

Scientific EffectElectromagnetic radiation modification:

Data Source

PatentUS20260033036A1Method to increase electrical production of solar cells, solar cell panels, and solar cell modules

Publication Date: 2026.01.29 ADVANCED STELLAR IRRADIANCE CORP

AI summary

An improved method of at least one of providing increased solar cell/solar panel/solar module (a solar member) electrical production abilities and of providing some increased solar member cooling abilities by at least one of applying/providing a coating, as disclosed herein, directly to and/or within the back-sheet of, a solar member, which coating can one of modify, reflect, and scatter light-waves in a manner advantageous for solar members to produce more electricity than otherwise, and which coating can optionally be applied to the front of a separate surface which is within six meters of a solar member.