Electroluminescence (EL) microscopy is a technique used to visualize the distribution of light-emitting regions in electronic devices, such as solar cells, LEDs, and OLEDs. In EL microscopy, a voltage is applied to the device under study, causing it to emit light. The emitted light is then detected and imaged using a sensitive camera or microscope.

EL microscopy can provide valuable information about the performance and defects of electronic devices. For example, it can be used to map the efficiency of solar cells, to identify areas of low light emission in LEDs, or to visualize defects in OLEDs. EL microscopy is also useful for studying the fundamental physical processes that occur in these devices, such as charge carrier recombination and transport.

EL microscopy is typically performed in a darkroom to eliminate ambient light and increase sensitivity. The device under study is mounted on a conductive substrate, and a voltage is applied using specialized probes or contacts. The emitted light is then collected and focused onto a detector, such as a CCD camera or a photodiode. The resulting image can be analyzed to extract quantitative information about the device's performance and properties.

by ChatGPT Feb13 Version