Rare-earth-free zinc oxide achieves a first in stress-to-light conversion

Researchers achieved a breakthrough in mechanoluminescent materials by creating a high-performance stress-to-light converter using zinc oxide without rare-earth elements, reducing cost and complexity while maintaining performance for self-powered sensor applications.

This does not prove commercial viability, scalability to manufacturing, or cost-competitiveness with existing solutions; lab achievements require further development and real-world testing.