Visible and IR magneto-optical system (r. 125)

Oxford Instruments Spectromag 4000-8 cryostat having 4 strain-free windows enables variety of magneto-optical experiments (transmission, reflectance, photoluminescence, PLE, Faraday and Kerr effects etc.) in magnetic fields up to 8 T and temperatures down to 1.3 K. Spectrometers from 0.25 to double 1 m, equipped with CCD detector, photo-multipliers and photon counting system. Wavelength range 300-1200 nm. Lasers: Ar-ion, Cd-ion, Ti: sapphire, He-Ne, semiconductor and dye-laser.

Inset: a liquid helium immersed microscope objective for micro-magneto-luminescence studies with spatial resolution about 1 micron.

Visible/IR/UV magneto-optical system (r. 127)

Cryostat with 5 T Oxford split coil coupled to GDM1000 spectrometer and SPM2 monochromator enables variable temperature measurements in 2 K - 300 K range.

High sensitivity spectroscopy system (r. 128)

Measurements of photoluminescence, reflection and mapping with spatial resolution of 0.01 mm. The system is equipped with a monochromator SPEX 500M, a photomultiplier (0.2-0.8 mm), a germanium detector (0.7-1.8 mm) and a PbS detector (1.5-4mm).

Photoluminescence from NIR to UV (r. 128)

Completely automated system equipped with a monochromator TRIAX 550 and a CCD camera. Lasers: He-Cd 50 mW, He-Ne 100 mW, Ar 3 W. Wavelength range 200 - 1000 nm, temperature range 3.5 - 500 K.

Low current (picoamper range) set-up (r. 128)

Measurements of Photo-Induced Current Transient Spectroscopy (PICTS), photocurrent, Thermally Stimulated Current (TSC), Hall effect and thermal dependence of conductivity of high-resistivity samples. Light wavelength: 0.3 - 3 mm. Inset:a helium cryostat, temperature range: 4 - 350 K.

Superconducting Quantum Interferometer (SQUID) (r. 129)

The SQUID (Cryogenic Ltd) is a device for precise magnetisation measurements. Temperature range 2 K - 300 K, magnetic field up to 6 T.

Photoreflectance and electroreflectance measurements (r. 130)

Wavelength range 300 - 1000 nm. Possibility of bias-wavelength electroreflectance mapping.

Deep Level Transient Spectroscopy (DLTS) set-up (r. 131)

High sensitivity measurements of deep levels, C-V characteristics and concentration profiling. Temperature range: 77 - 400 K, frequency: 2 - 2000 Hz.

Ion mill (po polsku: scieniarka) (r. 132)

Ion mill XLA 2000 (VCR Group Inc.) is a device designed for preparation of transmtion electron microscope. It has three argon-ion EEC sources fully controled by computer. A sample can be cooled by liquid nitrogen.

Spectrometer Cary 5 (r. 141)

Photospectrometer Cary 5 is prepared for measurements of absorption and reflection in NIR, VIS and UV range. Temperature control with use of a microrefrigerator in the range 12 - 300 K.

High pressure laboratory

Optical and electron-transport (Hall effect, conductivity, I-V, C-V) measurements under hydrostatic pressures up to 1.5 GPa and magnetic fields up to 7 T.

Far Infrared (FIR) laboratory

FIR photocurrent (absorption) measurements with CO and methane lasers in magnetic fields.

Fourier spectrometer

High resolution Fourier spectrometer FS113v (Bruker). Working range 40 cm^-1 - 15000 cm^-1. Possible transmission and reflectivity measurements, also in low temperatures.

Metal-Organic Chemical Vapour Epitaxy (MOCVD) reactor (Pasteura 7)

One inch, horizontal, RF heated MOCVD reactor is dedicated to growth of III-V semiconducting compounds. It produces GaInSb, AlGaInAs and AlGaN semiconductor heterostructures. Possibilities of atmospheric-pressure and low-pressure growth conditions.

Ammonothermal technology of nitride-crystals (GaN and AlN) growth

The ammonothermal method consists of metallic gallium or aluminium reaction with supercritical ammonia at temperatures up to 550 st. C and pressure in the range of 4-5 kbar. The autoclave is filled with a precisely weighed amount of ammonia using a vacuum tensieudiometer(see the photograph). Then, the autoclave is heated in a tubular furnace and kept in at the reaction temperature for 3-21 days.

High-resolution microscope with Nomarski contrast (Pasteura 7)

High-resolution microscope with Nomarski contrast

C-V profiler

Capacitance-Voltage (C-V) profiler with a liquid Schottky electrode can determine a profile of dopands concentration with nanometric resolution.