Flexible Perovskite Solar Cell Conductive Grid

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Solution Overview

Problem

Existing solar cell technologies are heavy, rigid, and have limited flexibility, making them unsuitable for applications requiring portability or integration into flexible structures, and they also have shorter lifespans compared to silicon solar cells.

Innovation Solution

The development of a flexible perovskite solar cell using a conductive grid, which is fabricated on a metallic foil substrate that is foldable and rollable, allowing for simplified manufacturing and deployment, and enabling the solar cells to be produced in various sizes and configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If conventional solar cell technologies are used, then energy conversion capability is achieved, but weight is excessive and flexibility is limited

Engineering Contradiction:

ImproveweightVSAvoidflexibility

Core Design Contradiction:

Weight of moving objectVSEase of operation

Solution Approach 1:

The patent replaces conventional rigid glass and metal substrates with flexible substrates such as metal foils, plastic substrates, or fabric substrates. This enables the solar cell to be bent, folded, or rolled while maintaining structural integrity and functional performance, directly resolving the contradiction between weight reduction and flexibility improvement.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent employs composite material structures combining flexible substrates with perovskite active layers and conductive grid patterns. This composite approach allows the integration of lightweight materials with high energy conversion efficiency, achieving both reduced weight and enhanced flexibility simultaneously.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If flexible substrates are used to improve portability, then flexibility is enhanced, but manufacturing precision becomes more difficult to control

Engineering Contradiction:

ImproveportabilityVSAvoidmanufacturing tolerance

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary patterning of conductive grids on flexible substrates before depositing the perovskite active layer. This pre-established conductive network provides precise alignment references that guide subsequent manufacturing steps, ensuring manufacturing precision is maintained even on flexible, potentially deformable substrates.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces mechanical alignment methods with pattern-based alignment using conductive grid designs. The grid patterns serve as self-aligning features that eliminate the need for complex mechanical positioning systems, thereby maintaining manufacturing precision while working with flexible substrates.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Weight of moving object

If perovskite material is used to reduce weight and improve flexibility, then portability is enhanced, but lifespan is shorter compared to silicon cells

Engineering Contradiction:

ImproveweightVSAvoidlifespan

Core Design Contradiction:

Weight of moving objectVSDuration of action of stationary object

Solution Approach 1:

The patent modifies the perovskite material composition and structural parameters to enhance stability and longevity. By adjusting compositional ratios, crystal structures, and interface engineering, the perovskite layer achieves improved resistance to degradation while maintaining its lightweight and flexible properties, thereby extending operational lifespan.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates composite structures with perovskite active layers protected by encapsulation layers and stabilized with conductive grid architectures. This composite design protects the perovskite from environmental degradation and mechanical stress, extending lifespan while preserving the inherent lightweight and flexible advantages of perovskite materials.

Inventive Principle:

Principle #40Composite materials

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 flexible perovskite solar cells are highly stable, lightweight, and can be produced with less stringent manufacturing tolerances, offering improved flexibility and longer lifespans compared to traditional solar cells, while maintaining efficient energy conversion capabilities.

Implementation Method 1

a perovskite layer thereon, the perovskite layer generating an electric current based on light energy impingement

Methodology Applied

Scientific EffectPhotovoltaic effect: Photovoltaic Effect

Data Source

PatentUS20250089433A1Flexible perovskite solar cell using conductive grid

Publication Date: 2025.03.13 VERDE TECHNOLOGIES INC

AI summary

Techniques for solar cell realization are disclosed. A metallic foil substrate is obtained. The metallic foil substrate is flexible and rollable. A transport layer is deposited on the metallic foil substrate. The transport layer enables current conduction to the metallic foil substrate. A perovskite layer is added on the transport layer. The perovskite layer generates an electric current based on light energy impingement. An additional transport layer is provided on the perovskite layer. The additional transport layer complements the transport layer. The additional transport layer is isolated with a conductive layer. The conductive layer enables light transmission. A grid is connected on the conductive layer. The grid conducts electric current and enables light energy to reach the perovskite layer. The grid and the metallic foil substrate form contacts for photovoltaic operation.