Transparent Window Solar Cells Break Efficiency Records While Remaining Fully Clear
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📰 The quick summary: The first truly transparent energy-producing windows have arrived in America, using silicon microwires embedded in flexible polymer to generate electricity without the tinted appearance of earlier prototypes.
📈 One key stat: The new transparent solar cells achieve 8.07% power conversion efficiency at 10% visible transparency, setting a record for silicon-based transparent solar cells.
💬 One key quote: “UNIST accomplished an incredible feat by creating a window that looks like glass but is capable of harnessing energy from the sun.“

1️⃣ The big picture: A major breakthrough in solar technology has arrived with America’s first truly transparent energy-producing windows. Created by researchers at the Ulsan National Institute of Science and Technology (UNIST), these windows utilize n-type silicon microwires embedded in a flexible polymer sheet to generate electricity from sunlight. Unlike earlier solar window prototypes that had a brownish tint, these new windows maintain normal appearance while functioning as power generators. This innovation opens possibilities for turning ordinary buildings and vehicles into energy producers without compromising aesthetics.
2️⃣ Why is this good news: Buildings can now generate clean energy through their windows while maintaining normal appearance, eliminating the compromise between aesthetics and sustainability. The silicon-based technology offers long-term stability and minimal environmental impact compared to alternative materials. With slanted microwire tips that improve light absorption and reflection, these windows maximize energy capture from various angles. The technology’s flexibility and durability expand potential applications beyond standard windows to include curved surfaces in vehicles and modern architecture. This advancement transforms buildings from energy consumers to producers without requiring dedicated space for traditional solar panels.
3️⃣ What’s next: Researchers must now scale up production while maintaining efficiency and transparency levels for commercial viability. Market adoption will depend on proving long-term durability in various weather conditions and refining the manufacturing process to lower costs. Building code updates and integration standards need development to incorporate this technology into existing and new construction projects.

Read the full story here: Ecoticias – It’s a new era of photovoltaics — First energy-producing window hits America