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Solar power just hit a new milestone. Chinese researchers broke the 10% efficiency barrier for selenium solar cells for the first time, reaching 10.3%.
What makes this exciting: selenium cells have wider bandgaps and high efficiency potential. The team used optimized contacts, light-driven crystallization, and special annealing techniques.
The result? Stable devices that lost minimal efficiency after 1,000 hours of testing.

Chinese scientists push selenium solar cells beyond 10% efficiency
Researchers at the Chinese Academy of Sciences have set a world record for selenium solar cells, achieving 10.3% efficiency for the first time above the 10% threshold. The breakthrough was enabled by optimized charge-selective contacts, light-driven crystallization, and post-deposition annealing, producing stable devices with a 1.03 V open-circuit voltage.

Spotify will begin testing a feature that lets a user write a prompt for a playlist and receive a unique set of songs based on the user's earlier behavior (Sarah Perez/TechCrunch)
https://techcrunch.com/2025/12/10/spotify-tests-more-person…

Spotify tests more personalized, AI-powered 'Prompted Playlists' | TechCrunch
The playlists can factor in world knowledge, go back to your listening history from day one, and be refreshed daily or weekly.

Spotify will begin testing a feature that lets a user write a prompt for a playlist and receive a unique set of songs based on the user's earlier behavior (Sarah Perez/TechCrunch)
https://techcrunch.com/2025/12/10/spotify-tests-more-person…

Spotify tests more personalized, AI-powered 'Prompted Playlists' | TechCrunch
The playlists can factor in world knowledge, go back to your listening history from day one, and be refreshed daily or weekly.