SHE Pre-Lab

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INCLUDE THIS SHEET AS THE FIRST PAGE OF YOUR REPORT.

Before the 1st Day of Lab

 

Student's Name: ______________________________________________________________

 

Partner's Name: ______________________________________________________________

 

Pre-lab Discussion Questions

Watch the video on this experiment.

It is your responsibility to discuss this lab with an instructor before your first day of your scheduled lab period. This signed sheet must be included as the first page of your report. Without it you will lose grade points. You should be prepared to discuss at least the following before you come to lab:

  1. Why are there energy bands in materials? What is a valence band? A conduction band? A band gap?
  2. How do conductors, insulators, and semiconductors differ in their energy-band structures?
  3. How do we explain the fact that there are “free electrons” in a metallic conductor? What is an extrinsic semiconductor?
  4. What is the Hall Effect?
  5. Explain the Van Der Pauw Technique.
  6. What measurements are needed for studying the Hall Effect?

 

Staff Signature ______________________________________________ Date ____________

Completed before the first day of lab? (circle)   Yes   /   No

Mid-lab Questions

  1. By day 4, measure the Hall coefficient RH of the sample at room temperature.

 

Staff Signature ______________________________________________ Date ____________

Completed by the fourth day of lab? (circle)   Yes   /   No

Please also fill out the Student Evaluation of Experiment.