Carrier Concentration in Semiconductor vs the Fermi Energy Level and Density of States
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Carrier Concentration in Semiconductor vs the Fermi Energy Level and Density of States

        

Carrier Concentration in Semiconductor vs the Fermi Energy Level and Density of States

Logo for Carrier Concentration in Semiconductor vs the Fermi Energy Level and  Density of States
Illustration of the concepts of the Fermi Level, Density of States, and carrier concentrations in semiconductors. Includes both applet and tutorial, including worksheet, references, quiz, and SPICE model.
Material Type: Quiz/Test
Technical Format: Java Applet
Date Added to MERLOT: May 18, 2000
Date Modified in MERLOT: September 09, 2014
Author:
Submitter: John Walkup

Quality

  • Peer review 4 rating
    Peer Reviews: 4 rating
  • User review 4 average rating
  • User Rating: 4 user rating
  • Discussion (2 Comments)
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About

Primary Audience: College General Ed
Mobile Compatibility: Not specified at this time
Language: English
Cost Involved: no
Source Code Available: no
Accessiblity Information Available: no
Creative Commons: unsure

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Avatar for Barbra Bied Sperling
14 years ago

Barbra Bied Sperling (Staff)

I spent about 20 minutes working with the applet and reading the
accompanying textual material. This is a learning item in progress, as several
parts (applet tutorial, worksheet, quiz, SPICE simulation) are just stubs, and
only one reference is given, and that is not on-line. It could be effectively
used as a lecture/demo, but probably not as a tutorial or homework without
substantial instructor-supplied material.
The applet has the flexibility to show or hide various functions (density of
states, Fermi distribution, density of occupied states), and because of this
the instructor will need to spend a lot of time explaining what is being shown.
The default mode for the left display is too dense, but the applet gives the
option of showing or hiding each of the various functions. The textual
information currently in the introduction and mathematical analysis is not
sufficiently clear for most students to understand the display on their own.
The change in the energy distribution of the carrier density with temperature
is particularly informative, in part because of its simple display.

Avatar for John Walkup
14 years ago

John Walkup (Staff)

Applet worsk well, with very nice graphics.