November 4, 2025

ElFys featured by Enter Espoo - a success story of innovation

Enter Espoo has released a Success Story article highlighting ElFys’ development and unique photodetector technology. The story describes how a research idea originating at Aalto University led to a “once-in-a-lifetime” moment, the invention of a new type of photodiode that became the foundation for ElFys’ patented Black Silicon technology.

Today, ElFys manufactures ultra-sensitive photodetectors used in medical devices, analytical instruments, and defence technologies. The company serves more than 100 customers in over 20 countries, with around 90% of its production exported worldwide.

Read the full Enter Espoo article.

Photodiode wafer manufactured with patented black silicon technology
ElFys' black silicon photodetectors - photo by Jari Härkönen



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