List of Applets
(Click here for up-to-date applet resource)

• Solid Sate
•  Zincblende and Diamond structures ( GaAs, Si, etc.) : unitcell with lists of material property. It shows a 3D view of the unitcell and a 3D view of the covalent bonds.
  
  
• Energy Bands and Charge Carriers
• Visualization of diffusion, drift and recombination of excess minority carriers in a semiconductor.
• Indirect recombination via an energy state in the band gap. It also introduces the four basic processes in the Shockley-Read-Hall statistics.
• AlGaAs: Band diagram and E-K diagram
  
  
• Fermi Level Concepts
• Fermi Function and Localized Energy States and the Temperature effect.
• Carrier Concentration vs. Fermi Level and the doping of donor and acceptor impurities.
• Carrier Concentration vs. Fermi Level and the Density of States
  
  
• PN Junction Diode
• A graphical illustration of the formation of a PN junction diode and its band diagram. It shows both the band diagram and a sample schematic.
• Biased PN Junction: band diagram, diffusion and drift currents, etc.  It shows both the energy band under bias and the animated carriers flowing across the junction.  With a quiz.
• Current Flow in Forward-Biased P-N Junction via animated graphics. It shows an animated flow of carriers in a simplified FLAT band. It does NOT show the energy band correctly.
  
  
• Device Fabrication Steps
• PN Junction Diode : a multimedia approach to the fabrication steps. May 19, 1997
• n-channel MOSFET, both side-view and top-view and full Photoresist steps.   
• BJT-FET pair on the same chip, side-view and full Photoresist steps.
• CMOS Inverter, side-view, a higher-level abstraction of the device fabrication steps.
• MS diode
  
  
• Metal-Oxide-Semiconductor (MOS) FET
• Work Function difference between Gate Metal and Si.   (for IE4.0 or Netscape4.0 with JDK1.1 patch.).  April 1997, modified April 1998.
• A MOS calculation tool for Flat-Band Voltage (V_FB) and the Threshold Voltage (V_T)  (for IE4.0 or Netscape4.0 w. JDK1.1 patch.).  May 15, 1997, modified April 1998.
• MOS band diagram and the gate bias effect in the channel (accumulation, depletion, inversion).
• Operation of MOSFET
• Summary  (Java1.0) April 7, 1998; Java1.1 version.
• Individual applets:
• Channel ON-OFF behaviors. (Java1.0) March 18, 1998 ;  Java1.1 version. March 19, 1998
• Channel ON-OFF by Vgs, Pinchoff-Continuous by Vgd. (Java1.0) March 18, 1998;   Java1.1 version. March 31, 1998
• Device cross-section and Output characteristics (I_d vs. V_gs, V_ds) April 6, 1998 ;  Java1.1 version April 6, 1998
• Single-stage Amplifier w. BJT or MOSFET
• Digital Circuits
• CMOS Inverter : The V_T-matching issues (for the design of threshold voltage of MOSFET).  May 14, 1997
  
• Applets on Transistors (incomplete section):
• JFET : Device cross-section (channel & depletion regions) and output characteristics with user control of V_GS and V_DS.
• n-channel MOSFET drain characteristics .
• BJT under bias, band diagram, current flow, ...  
• MOSFET-I : Threshold Voltage.
• MOSFET-II : Static Performance (On-Off, Lin-Sat behaviors)    
• Device Fabrication and Processing Technology (incomplete section)
•  Self-aligned gate technology versus the conventional processing of MOSFET.
• Problems general to Semiconductor Devices (incomplete section)
• Space charge, electric field, and potential profile. With quizes.
• A Comprehensive List of Topics for Solid State Applets

• SUN Microsystem's Java site.
• Apple Computer's Educational Object Economy.
• IBM's Software Homepage.
• EarthWeb's Gamelan , a Java Directory.
• JARS, Java applet rating service.