In Forbidden Energy Gap kit, the Forward biased voltage
of a silicon/germanium diode or LED is studied as a function of temperature.
A graph of Voltage vs Temperature is plotted, which will be a straight line.
From the slope (a) and intercept (b) information, forbidden energy gap is
calculated using relation:
The apparatus consists of
- Main unit having digital voltmeter (0-9.99V dc), micro ammeter (0-999 µA dc) and highly stabilized variable power supply,
- Samples (Ge, Si, LED),
- Energy controlled hot air oven, Silicon Oil and Thermometer.
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Forbidden
Energy Gap Kit
