Gallium lamp for solar cell testing

Tue, 23 Jun 2026 09:22:01 +0800

On a solar cell test line, hitting the right UV band—UVA, UVB, or UVC—isn’t a preference. It’s the test. If your lamp’s spectrum drifts, you’re flying blind on photoinitiator response in encapsulant cross-linking, thin-film degradation signatures, and edge-seal adhesion checks. We built our gallium lamp for solar cell testing around one simple idea: spectrum is the variable, and we lock it down by design. What matters, technically We tune the gallium-doped mercury vapor emitter by adjusting the luminous salt ratio in the arc tube, pushing output toward 365 nm, 385 nm, 395 nm, or 254 nm depending on the process. That gives you stable spectral output with defined peak irradiance and a predictable spectral half-width, so your radiometer readings stay repeatable shift after shift. You get consistent UV power density at the test plane in mW/cm², and the lamp holds its setpoint through thousands of ignitions. The reflector geometry and dichroic coatings are matched to the target wavelength to kill out-of-band energy and keep the beam profile tight. Why this works in practice Solar cell qualification needs repeatable exposure, not broad-spectrum heat. Run a custom UV profile and you can shorten dwell, cut thermal load on sensitive substrates, and keep photoinitiator activation aligned with the ink or encapsulant chemistry. The payoff is a tighter process window, fewer false fails, and less rework. The lamp also holds stable output over its life, so your curing and aging tests don’t drift as the lamp ages. Here are the details you can’t gloss over Spectral tailoring depends on exact fixture alignment and proper thermal management. Output and stability hinge on reflector-to-substrate distance and the specified operating current. Make sure the lamp, driver, and ignitor are spec’d together, and confirm your spectral radiometer is calibrated for the band you’re running. Just remember: pushing higher power shortens arc tube life. Plan your replacement intervals around uptime, not wishful thinking.

Cell on UV Lamp Core

Gallium lamp for solar cell testing