Photovoltaic Solar Cell Electronically Controlled Dimming Film

Windows are major sources of energy loss in buildings and vehicles. Standard glass allows excessive heat (IR) and glare to enter, increasing reliance on air conditioning. While current "Smart Glass" technologies can dim to block heat, they often require external electricity to operate. On the other hand, conventional solar panels are opaque and cannot be applied to transparent surfaces. There is a critical need for a solution that generates clean energy without sacrificing transparency or aesthetic appeal.

The invention integrates a high-efficiency perovskite-based photovoltaic layer with an active dimming layer (PDLC) into a single, thin-film structure. This allows the film to be applied directly to glass surfaces. It functions as a self-powered system: the solar layer generates electricity from sunlight, which is then used to power the dimming layer to adjust transparency automatically. This reduces indoor temperatures and glare. With an efficiency of up to 22%, it transforms passive windows into active energy-generating and climate-controlling assets.

The major flaw in prior art is the low efficiency of transparent photovoltaics (usually below 10%) and the energy-consuming nature of smart windows. This invention addresses these by boosting transparent solar efficiency to a commercially viable 22%. Furthermore, it eliminates the need for complex external wiring and power sources required by traditional smart glass, turning the window into a self-sustaining power generator rather than an energy drain. 

Dual-Effect in One: Combines a high power generation efficiency of 22% with dynamic dimming functionality.

High Transparency: Maintains approximately 70% visual transparency, without affecting natural lighting.

Self-Powered: The dimming function requires no electricity and is entirely powered by sunlight.

Long-Lasting and Durable: Features high UV resistance, with a lifespan of 10-15 years.

Multi-Color Display: The dimming layer supports multiple colors to meet architectural aesthetic requirements.

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An estimate of the total addressable market?

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