ExP lab consists of Optical Spectroscopy Laboratory and the Materials Growth Laboratory. The spectroscopy laboratory houses testing stations for optical and electrical measurements. The testing stations provide a controlled environment (inert gas, vacuum), as well as capability to perform measurements at cryogenic temperature (4K with magnetic capability). Lasers (continuous, picosecond as well as femtosecond (~ 210 nm – 2500 nm)), arc lamps, monochromators, spectrometers and optical spectrum analyzers enable optical testing in a continuous and pulsed time domain. The Lab hosts and maintains the Diffusion Imaging Microscope, which enables investigation of spectrally, temporally and spatially resolved exciton transport from 4K to room temperature. Ultrafast pump probe spectroscopy capability is available to probe sub 30 ps time window. The lab is equipped with characterization techniques such as time correlated single photon counting, interferometer (spectrally resolved time dependent photoluminescence), absorption spectroscopy, Raman spectroscopy, photo-responsivity measurement in the visible and NIR spectral range as well as AFM/NSOM capability. The lab also has capability to conduct simultaneous electrical DC/RF measurements and optical spectroscopy.
Materials Growth laboratory houses a nitrogen glove box that is connected to a Nexdep thermal evaporation system from Angstrom Engineering suitable for depositing organic materials and metals. The lab is equipped with in-house developed fully automatic robotic arm dip coater for layer-by-layer growth, capability for mechanical exfoliation of TMD monolayers as well as an alignment microscope system for fabricating TMD heterostructures. Along with the growth facilities the lab is equipped with basic sample cleaning, annealing, handling, and storing facilities (fume hood, nitrogen and vacuum storage boxes, etc.).
Furthermore, wide assortment of electronic systems including spectrum and network analyzers, oscilloscopes, lock-in amplifiers, RF amplifiers, is available.
ExP lab has full access to the Lurie Nanofabrication Facility (LNF) for the materials growth/synthesis and fabrication and the Michigan Center for Materials Characterization [(MC)2]. The LNF provides a full set of lithographic tools capable of patterning features as small as 5nm over wafers as big as 6” in diameter. The (MC)2 provides a broad spectrum of analytical testing and characterization equipment including high resolution scanning electron microscope and transmission electron microscope, focused ion beam, atomic force microscope, x-ray energy dispersive spectroscopy.