This year’s winner of the Millennium Technology Prize, Michael Grätzel, director of the Laboratory of Photonics and Interfaces at Ecole Polytechnique Fédérale de Lausanne, has appeared often in Technology Review for his work developing dye-sensitized solar cells (also called Grätzel cells). The solar cells can be flexible, transparent, and tinted just about any color you’d like–features that make them attractive for consumer goods and windows. We wrote about the first product to use the devices last fall–a backpack with a solar panel attached to the back for charging portable electronics.
They’re not ready to replace crystalline silicon and cadmium-tellluride thin film solar panels, the kind sold today for rooftop and large-scale utility installations. Ultimately, when their cost is figured not by initial price, but rather the price divided by the total kilowatt hours produced during their warrantied life, they’re not yet cheap enough. But Grätzel and many other researchers are hard at work to make them more durable, cheaper to make, and more efficient.
DeepMind’s cofounder: Generative AI is just a phase. What’s next is interactive AI.
“This is a profound moment in the history of technology,” says Mustafa Suleyman.
What to know about this autumn’s covid vaccines
New variants will pose a challenge, but early signs suggest the shots will still boost antibody responses.
Human-plus-AI solutions mitigate security threats
With the right human oversight, emerging technologies like artificial intelligence can help keep business and customer data secure
Next slide, please: A brief history of the corporate presentation
From million-dollar slide shows to Steve Jobs’s introduction of the iPhone, a bit of show business never hurt plain old business.
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.