LAYER®Vault – OPV Energy with On-Board Storage

Integrated OPV Harvesting & Storage on Flexible Film

LAYER®Vault from Dracula Technologies is a fully integrated power platform that combines low-light organic photovoltaic (OPV) energy harvesting and electrical storage on a single, flexible film.

Designed for ultra-low-power IoT devices, LAYER®Vault delivers true energy autonomy: it generates power from ambient light and stores it directly on-board, enabling electronics that charge themselves in everyday indoor conditions.

Based on patented OPV inkjet-printing technology, LAYER®Vault offers a cost-effective, scalable and highly customizable solution that redefines what’s possible for battery-free and battery-assisted devices.

While LAYER® focuses exclusively on energy generation, LAYER®Vault adds a printed battery on the back of the OPV cell, allowing it to both harvest and store energy in one ultra-thin module. The result is a compact, sustainable power source tailored for BLE, NFC and other ultra-low-power applications that must operate reliably even below 50 lux.

Key Facts

• Organic Photovoltaic (OPV) technology for ultra-low-power indoor IoT

• Integrated harvesting and storage: printed battery on the back of the OPV cell

• Inkjet-printed, free-shaped modules for maximum design freedom

• Outstanding performance in low-light and harsh environments (down to < 50 lux)

• Flexible, ultra-thin film ideal for labels, tags, and embedded electronics

• Unlimited renewable energy as long as ambient light is available

• Reduced Total Cost of Ownership (TCO): fewer battery changes, less maintenance

• Environmentally friendly and recyclable solution with organic materials

• Optimized for ultra-low-power devices:

  • Perfect for BLE and NFC devices

  • Enables long-term autonomy for IoT sensors, tags, and smart labels

Applications

LAYER®Vault is ideal wherever compact, maintenance-free power is needed for ultra-low-power electronics, including:

• Smart asset tracking: BLE / NFC tags and labels in logistics, retail, and industry

• Smart buildings & offices: energy-autonomous sensors for occupancy, temperature, air quality, and environmental monitoring

• Smart home devices: wireless sensors, beacons, and control interfaces powered by ambient indoor light

• Condition monitoring: low-power nodes on equipment and infrastructure in factories, warehouses, or campuses

• Retail & circular economy: smart packaging, reusable containers, and returnable assets with built-in, self-powered electronics

Test your concept with a demo or evaluation kit – get in touch with Dracula Technologies to explore LAYER®Vault for your next ultra-low-power IoT product.