UV Fluorescence

UVF-DroneSpot

Highest throughput UVF Imaging on Rooftops or in the Field

UVF Imaging at the highest throughput in order to see cracked cells, hot spots and other panel defects

UVF can reveal a wide range of panel problems and non-uniformities

The UV Fluorescence technique works with panels that have polymer backsheets. Fluorophores are contained in panel encapsulants and backsheets – leading to fluorescence in the visible spectrum when exposed to UV light.

Encapsulant BOM Variations

Backsheet BOM Variations

Gridline
Corrosion

Edge Seal Failure

Non-uniform Lamination

Cell Cracking
Dating

Hotspots and Yellowing

J-Box Seal Failure

UVF Tools

Reveal hidden defects, cracks, and junction issues with non-contact imaging. These tools are optimized for different stages of PV inspection, from cells to modules, and from lab to launchpad.

Publications

Here you’ll find white papers, case studies, and expert commentary designed to provide practical takeaways for professionals and decision-makers

Customized Defect Imaging Solutions for Perovskite and Tandem Cell/Panel Architectures

UV Fluorescence Imaging Of Defects And Bill Of Materials Variations In Bifacial Solar Panels

EUPVSEC – Bilbao, Spain – Sep 22, 2025

Ultraviolet Fluorescence Imaging for Photovoltaic Module Metrology: Best Practices and Survey of Features Observed in Fielded Modules

IEEE Journal of Photovoltaics ( Volume: 15, Issue: 3, May 2025)

Low-Cost Daytime Electroluminescence Imaging

NREL PV Reliability Workshop – Lakewood, CO USA – Mar 6, 2025

UV Fluorescence Imaging for Solar Panel Product Development and Durability Testing

NREL PV Reliability Workshop – Lakewood, CO USA – Feb 28, 2024

Unveiling the Unseen: Harnessing UV Fluorescence for Comprehensive Rooftop PV System Assessment and Successful Insurance Claims Process

NREL PV Reliability Workshop – Lakewood, CO USA – Feb 28, 2024

Detection and Impact of Cracks Hidden Near Interconnect Wires in Silicon Solar Cells

50th IEEE PVSC, Jun 12 2023