High-intensity illumination treatments against LeTID - Intensity and temperature dependence of stability and inline feasibility
| Autor: | Stefan Rein, Sebastian Roder, Henri Vahlman, Jan Nekarda |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry High intensity Emphasis (telecommunications) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Stability (probability) 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Optics Performance ratio Treatment intensity Degradation (geology) Treatment time 0210 nano-technology business Intensity (heat transfer) |
| Popis: | We study the mitigation of light- and elevated temperature-induced degradation (LeTID) with high-intensity illumination treatments, placing special emphasis on inline feasibility. After the treatments, we investigate the stability upon degradation conditions close to the recently suggested standard, which allows estimating the LeTID behavior during the operating lifetime of solar modules in the field. Subsequently, we map the stability at different treatment intensities and temperatures achievable with an air-cooled tool. We show that, when applying short treatment times, the stability improves with increasing treatment intensity and deteriorates steeply with rising temperature above an optimum region around 250 °C. However, these intensity- and temperature-dependent differences largely vanish when increasing the treatment time sufficiently. We also investigate the significance of darkness/illumination during the cooling ramp from the treatment temperature in view of the LeTID stability. We discuss our results based on suggested defect models of LeTID, and provide hypotheses of the origin of the instabilities observed at the high treatment temperatures. After identifying optimal treatments, we demonstrate that the energy yield loss due to LeTID reduces by over 60% after an inline-feasible process consisting of only 30 s of high-intensity illumination, combined with cooling of the samples from the process temperature under a lower-intensity illumination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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