RT info:eu-repo/semantics/article
T1 Daylight luminescence system for silicon solar panels based on a bias switching method
A1 Guada, Miguel
A1 Moretón, Ángel
A1 Rodríguez‐Conde, Sofía
A1 Sánchez, Luis Alberto
A1 Martínez, Mario
A1 González, Miguel Ángel
A1 Jiménez, Juan
A1 Pérez, Leonardo
A1 Parra, Vicente
A1 Martínez Sacristán, Óscar
AB Among the many characterization techniques for solar panel testing, two, electroluminescence(EL) and photoluminescence (PL), can provide useful visual informationabout the presence of different types of cell defects. EL is performed outdoorsby night in commercial solar plants due to the very weak luminescence emissioncompared to sunlight. PL faces the added difficulty of needing to find a large-areahomogeneous light source to excite the modules. Since nighttime work poses manydrawbacks and risks, a daylight outdoor EL/PL system would be useful for offeringsafe inspection of solar plants. We present daylight luminescence techniquesbased on a bias switching method, in which a pulsed luminescence signal is obtainedby alternating the polarization state of the solar panels, synchronizing it with theluminescence image detection by an InGaAs camera. Fast switching and selectingan optimized exposure time are key to achieving high-quality images. The daylightluminescence method described herein allows both EL and PL luminescence imagesto be obtained, even under high solar irradiance conditions.
SN 2050-0505
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/52757
UL https://uvadoc.uva.es/handle/10324/52757
LA spa
NO Energy Science & Engineering,  2020;00:1–15
DS UVaDOC
RD 26-dic-2024