Study of Forbidden Energy Gap with P/S & 1 digital meter (C.R.) Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12312
Indian Lab Suppliers supplies the Study of Forbidden Energy Gap with P/S & 1 digital meter (C.R.) (Product ID: 12312) as part of its electronics engineering lab equipment range. It finds the forbidden energy gap of a semiconductor from the change in a diode’s reverse saturation current with temperature.
Quick Answer
The diode is reverse biased from a 2 V DC, 10 mA regulated supply and heated in a small electric oven, with its temperature read on a 0-110 °C thermometer. Reverse saturation current rises steeply with temperature because more electron-hole pairs are created across the gap, so a graph of log Is against 1/T is close to a straight line whose slope gives the energy gap Eg. The current is read on a 3½-digit digital microammeter (200 µA range). Please confirm at quotation whether the diode is germanium or silicon. The oven and diode get hot during the experiment.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiment | Forbidden energy gap of a semiconductor diode |
| Supply | 2 V DC at 10 mA, regulated |
| Meter | 3½-digit digital microammeter, 200 µA DC |
| Heating | Electrically heated oven for the diode |
| Thermometer | 0-110 °C |
| Mains | 230 V ±10%, 50 Hz AC; ON/OFF switch and fuse |
| Other apparatus | None required |
Where This Is Used
Used in semiconductor-physics practicals at undergraduate level. Related: Determination of electronic charge by using a rectifier with power supply and 2 meters (C.R.) (Product ID: 12270) and Activation Energy of a Thermistor with P/S & 1 digital meter (C.R.) (Product ID: 12313). Browse the full Electronics Engineering Lab Equipment range or related Physics Lab Equipment products.
Frequently Asked Questions
Which current is measured?
The reverse saturation current of the diode.
How is the diode heated?
In an electrically heated oven, with a 0-110 °C thermometer.
What graph gives the energy gap?
log Is against 1/T.
Related Categories
Electronics Engineering Lab Equipment · Physics Lab Equipment · Electronics Lab Equipment
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