Cambridge Photon Technology is Accelerating Deployment of its World-First Photon-Multiplier Technology

Cambridge Photon Technology, transforming high-energy photons into silicon-optimised infrared light, led by Dr Claudio Marinelli, Prof. Akshay Rao, Adrian Watson, and others, has secured £1,556,000, comprising £926,000 in equity investment from Cambridge Enterprise Ventures, Spectrum Impact, Tybourne Capital, Providence Investment Company, and SourceSquared and £630,000 Clean Energy and Climate Technologies grant from the UKRI Innovate UK Investor Partnerships, enabled by the participation of Cambridge Enterprise, an Innovate UK Investor Partner, in the investment round.

CPT’s technology converts high-energy photons into two infrared photons absorbable by silicon, boosting solar output by up to 15% while remaining compatible with existing infrastructure, the first large-scale demonstration of photon multiplication.

Dr. Claudio Marinelli, CEO of Cambridge Photon Technology, said the investment reflects strong global confidence in CPT’s technology and its potential to transform solar efficiency. Support from leading investors and Innovate UK will accelerate product readiness and bring this breakthrough British innovation to the global clean-energy market.

The funding will allow CPT to grow its Cambridge R&D team, speed up material testing with global partners, and prepare for a Series A raise ahead of pilot deployment, targeting its first product launch by 2028.

Innovate UK’s Investor Partnerships Programme: Clean Energy and Climate Technologies accelerates commercialization by pairing non-dilutive R&D grants with private investment. With global solar demand rising and silicon PV nearing its ~28% efficiency limit, CPT’s technology offers a seamless way to boost output without redesigning panels.