Gallium lamp for solar cell testing

Mon, 29 Jun 2026 11:42:05 +0800

When your supply chain is built for fast order turns, UV curing throughput can’t be the choke point. This gallium lamp is the one we keep spec’ing for solar cell testing and industrial printing lines — the kind of jobs that need repeatable spectral output, day after day. What matters under the hood It runs on a gallium-doped mercury vapor fill, tuned to hit 365 nm and 385 nm. That lines up with photoinitiator absorption in UV inks, so you get stable cross-linking across PET, foil, and thin substrates. Peak irradiance hits 2,000 mW/cm² at the arc center, and you can stack up 500–1,200 mJ/cm² in short dwell windows. The reflector uses a dichroic coating to push UV reflectance up and pull IR down, which keeps substrate temperature from running away. Output stays within ±3% over the life of the lamp, and you get 5,000+ hours at 80% of initial intensity, assuming controlled junction temperature and ozone-free operation. Why it holds up in real production In flexible operations, changeover speed and uptime are what keep shipments on time. This lamp comes up to full intensity in seconds, so you can start curing right after setup, not after a wait. The tight spectral profile cuts down on under-cure and over-exposure defects, which means less scrap and fewer rework passes. Energy use drops compared to broad-spectrum mercury systems, and the long service interval takes pressure off spare inventory and maintenance scheduling. On solar cell testing stations, the stable 365 nm/385 nm output keeps EL and photocurrent measurements repeatable by keeping spectral drift out of the equation, batch to batch. The practical details that make the difference The lamp drops into standard UV curing stations and industrial printers, but the reflector geometry has to match the beam profile. If it doesn’t, you can lose 15–20% of effective irradiance. Before you install, confirm fixture polarity and cooling airflow, and make sure the arc position lines up with the substrate path. Match your power supply to the lamp’s voltage and current curve — mismatches will accelerate electrode wear. Give it a warm-up to let spectral output settle, and keep a schedule of radiometer checks so you’re running with real process control, not guesswork.

Cell on UV Curing Matrix

Gallium lamp for solar cell testing