RT info:eu-repo/semantics/article T1 Inspection techniques in photovoltaic power plants: A review of electroluminescence and photoluminescence imaging A1 Redondo-Plaza, Alberto A1 Zorita-Lamadrid, Ángel Luis A1 Alonso-Gómez, Víctor A1 Hernández-Callejo, Luis K1 Ingeniería Eléctrica K1 Photovoltaic, solar energy, renewable energy, sustainability, inspection techniques, luminescence, electroluminescence, photoluminescence, faults detection, review K1 3306 Ingeniería y Tecnología Eléctricas AB The growth of photovoltaic power plants in both size and number has spurred the development of new approaches in inspection techniques. The most commonly employed methods include visual inspections, current-voltage measurements, infrared thermography, and luminescence imaging. Luminescence, rooted in the electromagnetic radiation capture of semiconductor structures that make up solar cells, proves effective in detecting various failures that may occur throughout the lifespan of a photovoltaic module. This phenomenon can be induced either by injecting current into the photovoltaic module (Electroluminescence) or through optical excitation using an appropriate light source (Photoluminescence). This paper offers an overview of the conventional outdoor luminescence imaging technique, delvinginto its applications and limitations. Additionally, it provides a comprehensive review of innovative outdoor luminescence technique approaches. These novel techniques aim to address several limitations of conventional methods, such as the considerably lower luminescence emission intensity compared to solar radiation, the need for external energy sources for current injection, the required acquisition time, and the necessity of disconnecting the solar module. PB Sage Journals SN 2753-3735 YR 2024 FD 2024-09-13 LK https://uvadoc.uva.es/handle/10324/75913 UL https://uvadoc.uva.es/handle/10324/75913 LA eng NO Renevable Energies. 2024; 2(2) NO Producción Científica DS UVaDOC RD 11-jun-2025