As the next-generation photovoltaic technology, perovskite solar cells have gained widespread attention due to their high conversion efficiency, low fabrication cost, and flexible preparation process. Their core principle relies on the perovskite material (with the general formula ABX₃) to absorb light and generate electron-hole pairs, which are then separated and transported to electrodes to form an electric current. However, tiny defects in the fabrication process, such as uneven coating, microcracks, or crystal boundary irregularities, can significantly reduce module performance, making high-precision non-destructive testing essential.
Yoha Solar's perovskite solar module EL+PL tester
To address this challenge, Yoha Solar has developed a professional perovskite solar module EL+PL tester, integrating electroluminescence (EL) and photoluminescence (PL) technologies to achieve comprehensive quality detection. EL testing applies a forward constant current/voltage to drive carrier recombination and emission of near-infrared light (700–1200nm), intuitively showing current transmission defects like hidden cracks. PL testing uses 450-460nm laser to excite the perovskite layer, detecting micro-level material defects through luminescence intensity changes.
This tester, tailored for perovskite modules by Yoha Solar, boasts an effective testing area of up to 300×300mm (customizable) and a testing cycle of ≤10 seconds (excluding loading and unloading), perfectly adapting to R&D, pilot production, and mass production scenarios. It can not only identify defects such as black sheets and uneven coating but also characterize carrier lifetime and luminescence uniformity, providing reliable data support for process optimization. Equipped with high-sensitivity cameras and intelligent analysis software, it ensures accurate and efficient testing results.
Yoha Solar's perovskite solar module EL+PL tester Defect Detection Imaging
With the continuous advancement of perovskite technology, the demand for high-precision testing equipment is growing. Yoha Solar’s EL+PL tester stands out as a core tool for quality control, helping researchers and manufacturers overcome technical bottlenecks, improve product reliability, and promote the commercialization of perovskite solar modules. Its stable performance and user-friendly design make it a trusted choice in the global photovoltaic industry.