Key facts
- RadianX said its perovskite material is twice as good as existing panels at harvesting indoor light.
- The company said a 1.2 meter by 0.6 meter panel reaches 22.33% efficiency, which it calls the best on record.
- RadianX panels can be as thin as 0.7 millimeters and sized to fit a device, according to the report.
- CEO Vivian Qu said RadianX will sell packaged power units to device makers rather than bare panels.
RadianX, a startup developing solar material for small devices, raised $5 million in a seed round led by SOSV and Twynam, the company told TechCrunch in a report published November 5, 2026. Other investors named were One Small Planet, Sachsen Ventures, Avila VC, California Innovation Fund, quantumEDGE, Riceberg Ventures and Alumni Ventures.
Alongside the seed money, Pacific Union Technology Precision Manufacturing is putting in $4 million of non-dilutive investment to build a dedicated production line for the startup, according to the report. RadianX said the money would fund a commercial-volume production line.
The company makes solar material from a family known as perovskites. RadianX said the material performs as well as existing panels outdoors and twice as well at harvesting indoor light. Co-founder and COO Josh Douglas told TechCrunch: "We can harvest any kind of photon, whether it's an outdoor or indoor photon, and keep the device running longer — or running forever."
RadianX said its 1.2 meter by 0.6 meter panel harvests light with 22.33% efficiency, a figure the company described as the best on record. The panels can be as thin as 0.7 millimeters and sized to fit a device, according to the report. The company said it has met a key industry durability standard.
Perovskites remain more expensive than typical silicon-based solar panels and less durable, though the report says they have improved in recent years. Co-founder and CEO Vivian Qu cited power density as the reason the material is of interest.
RadianX does not plan to sell bare panels. Qu told TechCrunch the company intends to package the panels with power electronics tuned for perovskites and sell the package to device makers. The company is targeting e-readers, IoT sensors, wearables and factory sensors.