Electrical conduction of Semiconductor

Electrical conduction of Semiconductor

Experiments

Experiment: Experimental setup for studying electrical conduction in semiconductors and determination of band-gap energy of germanium.

Technical Specifications:

• The setup is designed to demonstrate temperature-dependent electrical conductivity of semiconductor
  material and determination of the energy band gap of germanium. The setup is include undoped/pure
  germanium semiconductor specimen mounted on a suitable printed circuit board (PCB).
• The semiconductor specimen is permit measurement of its electrical conductivity/resistance as a function of temperature.
• The setup is include a Hall-effect basic apparatus / semiconductor measurement unit suitable for mounting and electrical connection of the germanium specimen.
• A transformer with integrated rectifier is provided, having selectable output voltages of approximately 3 V, 6 V, 9 V and 12 V DC/AC, with output current capability of approximately 3 A. The system is suitable for operation from 230 V AC, 50/60 Hz mains supply. A digital multimeter is supplied for measurement of voltage/curnent/resistance as required for the experiment.
• The multimeter is suitable for laboratory measurement of the electrical parameters of the semiconductor
  specimen.
• The system is include a suitable weighted/base support for stable mounting of the experimental apparatus.
• Suitable safety experiment leads, approximately 75 cm length, is supplied for making electrical connections.
• The supplied leads are include appropriately colour-coded leads, including red/blue safety leads.
  The apparatus is permit measurement of the voltage drop across the germanium specimen at controlled/constant current while varying temperature.
• The system is allow determination of the temperature dependence of conductivity of intrinsic/undoped
  germanium.
• The experimental data is enable determination of the energy gap/band separation between the valence and
  conduction bands of germanium.
• The setup is supplied as a complete working experimental system, including all basic components, accessories, interconnecting leads and necessary hardware required to perform the stated experiment.