Winter Semester 2021







PHT.301 Physics of Semiconductor Devices

Winter Semester 2021

COVID-19: Rules for on-site courses and exams, COVID-19: Teaching and Exams in the academic year 2021/22 - pdf
Before the lectures the slides will be available at: https://cloud.tugraz.at/index.php/s/r3LzQp4MfDdMd6d
The lectures will be streamed at https://tugraz.webex.com/meet/p.hadley

Introduction

Semiconductor crystals, Intrinsic semiconductors

Intrinsic semiconductors, Extrinsic semiconductors

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<p style="text-align:center"><a href="oct20.pdf">October 20, 2021 - Intrinsic semiconductors / Extrinsic seminconductors (pdf)</a></p></td>

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<p>The recording on October 27, 2021 failed. Watch the <a href="https://tube.tugraz.at/Shibboleth.sso/Login?target=/play/6156cefe-8d7f-488b-8914-da4f9b09f1da">Extrinsic semiconductors video from 2020</a> starting at about 40 minutes and about the first hour of the <a href="https://tube.tugraz.at/Shibboleth.sso/Login?target=/play/a6bc7655-ecc7-4949-bedb-3d907a250f1d">Carrier transport video from 2020</a>.</p>
<p><a href="oct27.pdf">October 27, 2021 - Extrinsic semiconductors  / Carrier transport (pdf)</a></p>
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<p><a href="http://lampz.tugraz.at/~hadley/psd/L3/boltzmann.php">Boltzmann approximation</a>,  <a href="http://lampz.tugraz.at/~hadley/ss1/semiconductors/intrinsic_so.php">Intrinsic semiconductors with a split-off band</a>,

<a href="http://lampz.tugraz.at/~hadley/psd/L4/efplot.html">Determining <i>E<sub>f</sub></i> from the charge neutrality condition</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L4/eftplot.html">Fermi energy and carrier concentrations of extrinsic semiconductors</a></p>

<p>Exam questions: <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/04mar20/index.html">Mar 20 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/19jun19/index.html#P1">Jun 19 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/8mar19/index.html#P1">Mar 19 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov18/index.html#P1">Nov 18 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/5oct18/index.html#P1">Oct 18 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/7mar18/index.html#P1">Mar 18 P1</a></p>

Carrier Transport

pn Junctions

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<p style="text-align:center"><a href="nov10.pdf">November 10, 2021 -  pn-junctions (pdf)</a></p></td>

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<p><a href="http://lampz.tugraz.at/~hadley/psd/L6/abrupt.html">Abrupt pn junctions in the depletion approximation</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L6/linearly_graded.html">A linearly graded pn junction in the depletion approximation</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L6/longdiode.html">Long diodes</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L6/pnIV.php">PN diode IV characteristics</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L6/IT_V.php">PN diode Current-Temperature Characteristics</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L6/VT_I.php">PN diode Voltage-Temperature Characteristics</a></p>

<p>Exam questions:  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/5feb18/index.html#P1">Feb 18 P1</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov17/index.html#P1">Nov 17 P1</a></p>

Metal-Semiconductor Contacts

JFETs, MESFETs, MODFETs

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<p style="text-align:center"><a href="nov24.pdf">November 24, 2021 - JFETs, MESFETs, MODFETs, MOSFETs (pdf)</a></p></td>

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<p><a href="http://lampz.tugraz.at/~hadley/psd/L9/gradual.php">JFET Gradual Channel Approximation</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L9/gradualmesfet.php">MESFET Gradual Channel Approximation</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L9/njfet.php">Transistor characteristics of a n-channel JFET</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L9/pjfet.php">Transistor characteristics of a p-channel JFET</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/L9/nmesfet.php">Transistor characteristics of a n-channel MESFET</a></p>

<p>Exam questions: <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/04mar20/index.html#P3">Mar 20 P3</a>,   <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan20/index.html#P1">Jan 20 P1</a>,   <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/17may19/index.html#P1">May 19 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/8mar19/index.html#P3">Mar 19 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov18/index.html#P2">Nov 18 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/27jun18/index.html#P1">Jun18 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/18may18/index.html#P2">May18 P2</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30jun17/index.html#P2">Jun 17 P2</a></p>

MOSFETs

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<p style="text-align:center"><a href="dec1.pdf">December 1, 2021 - MOSFETs (pdf)</a></p></td>

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<p style="text-align:center"><a href="dec15.pdf">December 15, 2021 -MOSFETs, Memories (pdf)</a></p></td>

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<p><a href="http://lampz.tugraz.at/~hadley/psd/L10/moscap_poisson.php">MOS Capacitor - Solving the Poisson Equation</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/moscap_cv.php">MOS Capacitor  - Capacitance voltage</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/gradualchannelapprox.php">MOSFET Gradual Channel Approximation</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/nmosfet.html">Transistor characteristics of a n-channel MOSFET</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/pmosfet/pmosfet.html">Transistor characteristics of a p-channel MOSFET,</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/High_f.php">High frequency response of MOSFETs</a>, 
<a href="http://lampz.tugraz.at/~hadley/psd/L10/subthreshold.php">Subthreshold current</a>, 
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<p>Exam questions: <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/04mar20/index.html#P2">Mar 20 P2</a>,    <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan20/index.html#P2">Jan 20 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/19jun19/index.html#P2">Jun 19 P2</a>,   <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/17may19/index.html#P2">May 19 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan19/index.html#P2">Jan 19 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/27jun18/index.html#P2">Jun18 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/18may18/index.html#P1">May18 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/7mar18/index.html#P2">Mar 18 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/7mar18/index.html#P3">Mar 18 P3</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/5feb18/index.html#P3">Feb 18 P3</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov17/index.html#P3">Nov 17 P3</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30jun17/index.html#P3">Jun 17 P3</a></p>

Bipolar transistors

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<p style="text-align:center"><a href="bipolar.pdf">Bipolar transistors (pdf)</a></p>
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<p style="text-align:center"><a href="hbt.pdf">Heterojunction bipolar transistors, thyristors, latch-up  -(pdf)</a></p>
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<p>Ebers - Moll model: <a href="http://lampz.tugraz.at/~hadley/psd/L13/commonbase/pnp_current.html">Common base configuration</a>,  
<a href="http://lampz.tugraz.at/~hadley/psd/L13/commonemitter.php">Common emitter configuration</a><br />
<a href="http://lampz.tugraz.at/~hadley/psd/L13/minority.php">Minority carrier concentration of an npn bipolar transistor</a>,  
<a href="http://lampz.tugraz.at/~hadley/psd/L13/common_b.php">NPN common base configuration </a>,  
<a href="http://lampz.tugraz.at/~hadley/psd/L13/common_e_early.php">NPN common emitter configuration (including the Early effect)</a></p>

<p>Exam questions: <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan20/index.html#P3">Jan 20 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/19jun19/index.html#P3">Jun 19 P3</a>,   <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/17may19/index.html#P3">May 19 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/8mar19/index.html#P2">Mar 19 P2</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan19/index.html#P1">Jan 19 P1</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov18/index.html#P3">Nov 18 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/27jun18/index.html#P3">Jun18 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/18may18/index.html#P3">May18 P3</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/18may18/index.html#P4">May18 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/7mar18/index.html#P4">Mar 18 P4</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/5feb18/index.html#P2">Feb 18 P2</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov17/index.html#P2">Nov 17 P2</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov17/index.html#P4">Nov 17 P4</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30jun17/index.html#P4">Jun 17 P4</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/3mar17/index.html#P4">Mar 17 P4</a></p>

Optoelectronics

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<p style="text-align:center"><a href="led.pdf">Light emitting diodes  - (pdf)</a></p>
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<p style="text-align:center"><a href="solar.pdf">Solar Cells  - (pdf)</a></p>
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<p style="text-align:center"><a href="laserdiodes.pdf">Laser Diodes  - (pdf)</a></p>
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<p>Exam questions: <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/04mar20/index.html#P4">Mar 20 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan20/index.html#P4">Jan 20 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/19jun19/index.html#P4">Jun 19 P4</a>,   <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/17may19/index.html#P4">May 19 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/8mar19/index.html#P4">Mar 19 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/31jan19/index.html#P4">Jan 19 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30nov18/index.html#P4">Nov 18 P4</a>,  <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/27jun18/index.html#P4">Jun18 P4</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/5feb18/index.html#P4">Feb 18 P4</a>, <a href="http://lampz.tugraz.at/~hadley/psd/problems/exams/30jun17/index.html#P1">Jun 17 P1</a></p>

Winter Semester 2020