PN junction characteristics and Boltzmann's constant measurement

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Overview
Quick Details
Subject:
Physics
Brand Name:
Brolight
Model Number:
SEK-8108
Place of Origin:
Zhejiang, China
Supply Ability
Supply Ability:
100 Unit/Units per Month
Packaging & Delivery
Packaging Details
Carton
Port
Shanghai Airport or Ningbo Port
Lead Time :
15 - 30 days

 

 

PN junction characteristics and Boltzmann's constant measurement

  SEK-8108

 

 

 

DETAILS

The instrument tests the relationship between PN junction forward voltage drop and temperature in constant forward current to verify the theory. The experiment groups electricity and heat into a comprehensive experiment. It can be used in physical experiment in colleges.

Experimental contents

1. Draw volt-ampere characteristics for relationship between forward voltage and forward current in the same temperature.

2. Measure boltzmann’s constant in different temperatures.

3. Map the relationship between PN junction forward voltage drop and temperature in constant forward current. Calculate sensitivity, estimate energy gap of the PN junction material tested.

4. Exploration: measure unknown temperature by given PN junction

Features

a) Open sensing test design: The instrument provides several general thermowell to make convenience for inserting and fetching the sensor tested. It is used for not only in PN junction experiment but also in measuring the actual temperature and improving sensors in condition. It can measure thermistor, copper resistance, thermocouple, AD590, M35 and etc.

b) Dedicated accurate micro current source : We design a current source that can output 1NA~1mA steadily, it can guarantee the micro current steady to measure the forward voltage drop and boltzmann’s constant accurately.

c) The instrument can estimate the energy gap of 0 degree silicon material in normal temperature without ice water mixture

Technical parameters

Temperature sensor

Forward current, forward voltage drop and temperature are display by two sets of three and a half LED, accuracy: 0.5%

Temperature control device

Indoor~120, Accuracy ±0.2, Resolution:0.1, Control method: PID

PN junction sensor

The PN junction is formed by miniwatt NPN triode transistor(2SC1815,9013)’s CB junction’s short circuit.

Accurate micro current sourceIF

 Output current 1nA~1mA(4 levels for adjustment), accuracy 1nA, open-circuit voltage: about 5V. Range of display of micro current: 10-9~2×10-6A, resolution: 10-9A

Range of forward voltage drop

0~2V,Resolution:1mV

 

Typical experimental context and data

Experimental data and solution (FYI)

1.The value r depends on the relationship between minority carrier migration rate and temperature, usually r=3.4

2.PN junction temperature characteristic test data.

According to the data in the form, draw the diagram about the linear equation and correlative index to calculate boltzmann’s constant.

Order Information:

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PN junction characteristics and Boltzmann's constant measurement

SEK-8108

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