Biorad/Nanometrics HL5500 Hall effect systems

Biorad/Nanometrics HL5500 Hall effect systems (x2)
Location: Electrical Characterization Lab
Responsible: Pedro Barquinha / Diana Gaspar
The HL5500PC is a high-performance Hall Effect Measurement System with a 0.5 T permanent magnet. It enables measurement of resistivity, carrier concentration and mobility on a wide range of semiconductors and with minimum effort in sample preparation.
•    Basic instrument can measure sheet resistivities up to ≈10 MΩ/square and Hall voltages of ≈10 μV.
•    With the high impedance buffer amplifier, extended sheet resistivity measurement capability to 100GΩ/square and source currents as low as 1pA.
•    Temperature dependent measurements between 90 K and 550 K
•    Ideal sample size: 1x1 to 1.5x1.5 cm2 (1 mm thick)
•    Accepts Van der Pauw, bar, or bridge shaped geometries