In our laboratory, we use a series of home-built and commercial system, which are applied to measure the optical, electrical, magnetic and thermal properties in optoelectronic devices, including synchronous PL/EL measurements, transient EL measurements, temperature-dependent EL measurements，and in-situ PL measurements. 

In the synchronous PL/EL measurement setup, we incorporate an optical chopper and a lock-in amplifier to effectively extract the photoluminescence (PL) and electroluminescence (EL) signals from a hybridized response signal from the light-emitting diodes.