3B Scientific uses Cookies to make your experience on our web sites as user friendly as possible. By using this site you are accepting our Cookie Policy.

Experiment: Electrical conduction in semiconductors (230 V, 50/60 Hz), Basic equipment

Experiment: Electrical conduction in semiconductors (230 V, 50/60 Hz), Basic equipment, 8000724 [UE6020100-230], Conduction Phenomena
1,427.70 1,502.85 €
Save 75.15 when you buy this bundle
Objective: Determine band separation in germanium

Semiconductors only exhibit measurable electrical conductivity at high temperatures. The reason for this dependence on temperature is the band structure of the electron energy levels, which comprise a conduction band, a valence band and an intermediate zone, which in pure, undoped semiconductor materials cannot be occupied by electrons at all. As the temperature increases, more and more electrons are thermally excited from the valence band into the conduction band, leaving behind “holes” in the valence itself. These holes move under the influence of an electric field as if they were positive particles and contribute to the current much as electrons do. In order to determine the conductivity of pure, undoped germanium, this experiment involves sending a constant current through the crystal and measuring the voltage drop as a function of temperature. The data measured can be described by an exponential function to a good approximation, whereby the separation of bands appears as a key parameter.

Addionally recommended: Supplement UE6020100S-230.

Delivery scope

Undoped Germanium on Printed Circuit Board, 1008522 [U8487010], Hall-effect

Undoped Germanium on Printed Circuit Board

1008522 [U8487010]
Unit price
605.71 €
Basic Hall Effect Apparatus, 1009934 [U8487000], Hall-effect

Basic Hall Effect Apparatus

1009934 [U8487000]
Unit price
605.71 €
Barrel Foot, 1 kg, 1002834 [U13265], Bases

Barrel Foot, 1 kg

1002834 [U13265]
Unit price
31.30 €
Transformer with Rectifier 3/6/9/12 V, 3 A (230 V, 50/60 Hz), 1003316 [U33300-230], Power Supplies

Transformer with Rectifier 3/6/9/12 V, 3 A (230 V, 50/60 Hz)

1003316 [U33300-230]
Unit price
176.12 €
Digital Multimeter P3340, 1002785 [U118091], Hand-held Digital Measuring Instruments

Digital Multimeter P3340

1002785 [U118091]
Unit price
54.74 €
Pair of Safety Experiment Leads, 75 cm, 1002849 [U13812], Experiment Leads and Cables

Pair of Safety Experiment Leads, 75 cm

1002849 [U13812]
Unit price
14.64 €
Pair of Safety Experiment Leads, 75 cm, blue, red, 1017718 [U13816], Experiment Leads and Cables

Pair of Safety Experiment Leads, 75 cm, blue, red

1017718 [U13816]
Unit price
14.64 €
Item No.: 8000724 [UE6020100-230]
  • Secure online payment with SSL
  • Expert advice
  • Financing available
  • Easy returns & exchanges
  • International shipping available
Service hotline: +49-40-73966-223
Product Information
Brand 3B Scientific
add to cart

Customers who bought this item also bought these items: