Aperçu des sections

  • Généralités

  • Course Notes

    The content covers several key topics in the field of semiconductors and optoelectronics. Chapter 1 introduces semiconductors, detailing the differences between intrinsic and extrinsic types, including N-type and P-type semiconductors along with their charge carriers. It discusses doping methods used to modify semiconductor properties and explores semiconductor alloys, including techniques like Molecular Beam Epitaxy (MBE) and Metal-Organic Chemical Vapor Deposition (MOCVD). Additionally, the chapter addresses the formation and recombination of electron-hole pairs, as well as the concepts of energy bands in solids, including valence and conduction bands and the significance of the bandgap.

    In Chapter 2, the focus shifts to optical processes in semiconductors, covering phenomena such as absorption, emission, and photoluminescence. It examines the absorption characteristics of semiconductors, including bandgap energy, photon absorption, and the generation of electron-hole pairs. The chapter also differentiates between direct and indirect intrinsic transitions and discusses exciton absorption, the effects of electric fields on absorption, and the relationship between absorption and emission spectra.

    Chapter 3 delves into optoelectronic detectors, providing an overview of various types, including photodiodes, phototransistors, and charge-coupled devices (CCDs). It discusses the theory and working principles of photoconductors, as well as the structure and applications of junction photodiodes and avalanche photodiodes. The chapter also covers phototransistors, detailing their modes of operation and performance parameters.

    In Chapter 4, photovoltaic devices are introduced, focusing on the principles of solar energy conversion. The chapter discusses the solar energy spectrum, including ultraviolet, visible, and infrared radiation, and explores the device principles involving semiconductor materials and PN junctions. It addresses the current-voltage characteristics and factors affecting the efficiency of photovoltaic systems.

    Chapter 5 centers on light-emitting diodes (LEDs), explaining their working principles and characteristics. It discusses the structure and fabrication of LEDs, including both homojunction and heterojunction designs, as well as the materials used. The chapter also evaluates LED light power and efficiency, alongside various applications of LEDs in indicators, optical sources, and lighting.

    Chapter 6 focuses on laser diodes, detailing their theory, operation, and types. It explains the generation of laser beams and discusses reliability factors and applications in telecommunications, medical fields, and photolithography.

    Finally, Chapter 7 covers optical fiber technology, highlighting its applications in communication, sensors, and power transmission. It explains the principle of operation, including refractive index and total internal reflection, while addressing mechanisms of attenuation and the advantages and disadvantages of fiber optics. This comprehensive overview provides a solid foundation for understanding the principles and applications of semiconductors and optoelectronic devices.

    • Course notes Fichier

      CHAPTER 1: SEMICONDUCTORS

      CHAPTER 2: OPTICAL PROCESSES IN SEMICONDUCTORS

      CHAPTER 3: OPTOELECTRONIC DETECTORS

      CHAPTER 4: PHOTOVOLTAIC DEVICES

      CHAPTER 5: LIGHT-EMITTING DIODES

      CHAPTER 6: LASER DIODE

      CHAPTER 7: OPTICAL FIBER

    • Course Note French version Fichier

      CHAPITRE 1 SEMI-CONDUCTEURS.

      CHAPITRE 2 : PROCÉDÉS OPTIQUES DANS LES SEMI-CONDUCTEURS.

      CHAPITRE 3 : DÉTECTEURS OPTOÉLECTRONIQUES.

      CHAPITRE 4 : APPLICATION DE L’OPTOÉLECTRONIQUE, DISPOSITIFS PHOTOVOLTAÏQUES

      CHAPITRE 5 : DIODES ÉLECTROLUMINESCENTES

      CHAPITRE 6 : DIODE LASER.

      CHAPITRE 7 : FIBRE OPTIQUE. 


  • Slides

    We will discuss these slides during the course sessions, and we may modify them as needed to enhance the flow of the course and better achieve the main objectives.

    • Chapitre 1: Semiconductors Fichier

      Describe semiconductors
      Explain the types of semiconductors
      Define semiconductor alloys
      Explain the formation and recombination of electron-hole pairs
      Elucidate energy bands in solids

    • Chapitre 2: Optical processes in semiconductors Fichier

      Understand different optical processes in semiconductors

      Explain absorption in semiconductors and indirect intrinsic transitions

      Explain exciton absorption, donor-acceptor and impurity-band absorption

      Discuss effect of electric field on absorption

      Understand radiation in semiconductors

      Explain relation between absorption and emission spectra

      Discuss near band gap radioactive transitions


    • Chapitre 3: Optoelectronic detectors Fichier

      Understand different Optoelectronic detectors

      Explain Photoconductors

      Explain different types of Photodiodes

      Understand Phototransistors


    • Chapitre 4: : Photovoltaic devices Fichier

      Explain Solar Energy Spectrum

      Describe device principles of Solar cell

      Understand I-V characteristics of Photovoltaic devices

      Understand equivalent circuits

      Explain efficiencies of photovoltaic devices


    • Chapitre 5: : Light-emitting diodes Fichier

      The basic idea of LED

      Structure of LED

      Classification of LED

      Working principle and characteristics of LED

      Specifications of LED

      Applications of LED


    • Chapitre 6: : Laser diode Fichier

      Different types of Laser Diode

      Principle and working Laser Diode

      Application of Laser Diode


    • Chapitre 7: : Optical fiber Fichier

      Optical Fiber

      Different types of Optical Fiber

      Application of Optical Fiber


  • TUTORIALS

    Please note that you will have a total of six tutorials throughout the course. While we will make every effort to cover these tutorials in class, it is possible that we may not be able to go through all of them during our sessions. Therefore, I encourage you to work on each tutorial as thoroughly as possible to ensure you grasp the material.

    Additionally, please be aware that the content of these tutorials may change based on the progression of the course and the needs of the class. Stay adaptable, and be prepared to engage with any updates or modifications as we move forward.

    • Tutorial 1 Fichier

      Defining Semiconductors

      Categorizing Types

      Semiconductor Alloys

      Electron-Hole Dynamics

      Energy Band Theory

      Describing Semiconductors

      Types of Semiconductors (Doping)

      Semiconductor Alloys

      Formation and Recombination

      Energy Bands in Solids

      Optoelectronic Sensor

    • Tutorial 2 Fichier

      Fundamental Absorption & Indirect Transitions 

      Exciton & Impurity Absorption 

      Radiation & Emission-Absorption Relation 


    • Tutorial 3 Fichier

      Responsivity and quantum efficiency

      Photoconductors and Gain 

      Avalanche Photodiodes (APD) 

      Phototransistors

      Smart Streetlight Sensor 


  • LABS

    Please note that you will have several labs throughout the course. While we will strive to cover all of them, it is possible that we may not be able to go through each one during our sessions. Therefore, I encourage you to work on the labs as thoroughly as possible to ensure you understand the material.

    Additionally, please be aware that the content of these labs may change based on the progression of the course and the needs of the class. Stay adaptable, and be prepared to engage with any updates or modifications as we move forward.

    • Section 5

      • Section 6

        • Section 7

          • Section 8

            • Section 9

              • Section 10