Investigating Solar Panel Degradation in the Desert
An international research team has taken a deep dive into the aging of solar modules under extreme desert conditions – and the findings could shape the future of solar energy.
The team used Laser-Induced Breakdown Spectroscopy (LIBS) to study microscopic changes in the cover glass of solar panels exposed for decades in the Algerian Sahara.
Key insights include:
- Strong chemical changes in the outer glass layers, including calcium and magnesium loss
- Unexpected contamination by tin and lead – traced back to the float glass manufacturing process, not the desert environment.
- Valuable clues for developing more durable materials and improving solar manufacturing.
The CORALIS system from LTB Lasertechnik Berlin was central to this work. Its wide spectral range and high resolution provided a complete chemical fingerprint of the glass and even probed deeper layers – complementing methods like XPS.
The published paper for this study is entitled, “Investigation of solar cell cover glass surfaces after long-term exposure to desert climate in Southern Algeria.”
About the CORALIS Raman-LIBS System
The CORALIS system unites the two high complementary techniques, LIBS and Raman. By means of a high-quality sample image, pre-selected measurement positions are analyzed either with Raman or LIBS, or with both methods sequentially.
The unique two-wing echelle spectrometer as a core part is able to provide high resolution, large range, and high light-throughput on an unbeatable level. The laser-safe housing and the integrated interlocking circuit ensure user-friendly handling of the device and protection of the installed components.
For more information or a quotation for LTB products, contact IL Photonics.