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How much do you know about photo detectors or solar cells or displays? In this engineering course, you will learn about photo detectors, solar cells, displays, light emitting diodes, lasers, optical fibers, optical communications, and photonic devices.

You will learn the basis of the electrical, optical, and magnetic properties of materials including semiconductors, metals, organics, and insulators. We will show how devices are built to take advantage of these properties, emphasis will be on new, emerging technologies.


This course does not involve any written exams. Students need to answer 5 assignment questions to complete the course, the answers will be in the form of written work in pdf or word. Students can write the answers in their own time. Each answer needs to be 200 words (1 Page). Once the answers are submitted, the tutor will check and assess the work.


Edukite courses are free to study. To successfully complete a course you must submit all the assignment of the course as part of the assessment. Upon successful completion of a course, you can choose to make your achievement formal by obtaining your Certificate at a cost of £49.

Having an Official Edukite Certification is a great way to celebrate and share your success. You can:

  • Add the certificate to your CV or resume and brighten up your career
  • Show it to prove your success


Course Credit: MIT

Course Curriculum

Lesson 1
Photodevices: An Introduction 00:02:00
Photoconductors 00:04:00
Photodetectors and Photovoltaics: An Overview 00:06:00
The PIN Photodiode 00:05:00
Photovoltaics 00:05:00
Photovoltaic Materials and Design 00:15:00
Amorphous Silicon 00:05:00
Summary: Photodevices 00:04:00
Lesson 2
Practical Solar Cells: First Generation 00:07:00
Practical Solar Cells: Second Generation 00:10:00
Practical Solar Cells– Third Generation 00:10:00
Summary– Photodevices 00:05:00
Introduction: Light Emitting Diodes 00:10:00
LEDs: Choice of Materials 00:05:00
Real LEDs: Some Data and Summary 00:09:00
Lasers: An Introduction 00:13:00
Population Inversion: Nd-YAG and Ruby Lasers 00:11:00
Laser Cavity and Modes & Summary 00:08:00
Semiconductor Lasers 00:08:00
Heterojunction Lasers 00:07:00
Heterojunction Lasers: More Details & Summary 00:08:00
Lesson 3
An Introduction to Organic Electronics 00:11:00
Organic Device Examples: White Organic LED and Organic FET 00:10:00
Carbon Electronics 00:07:00
Liquid Crystal Displays: An Introduction 00:10:00
Twisted Nematic Display 00:08:00
Twisted Nematic Display with a Thin Film Transistor & LCD Summary 00:07:00
Optical Fibers: An Introduction 00:05:00
Modal Dispersion 00:10:00
Materials Dispersion 00:10:00
Waveguide Dispersion & Optical Fiber Summary 00:10:00
Lesson 4
Photonic Systems: An Introduction 00:08:00
Components of a Photonic System: Elecrto-Optical Modulator 00:10:00
Components of a Photonic System: Er-Doped Fiber Amplifier 00:10:00
Components of a Photonic System: Fiber-Bragg Grating 00:10:00
Components of a Photonic System: Thin Film Bragg Filters 00:11:00
Components of a Photonic System: Magnetooptical Isolators & Photonics Summary 00:05:00
Submit Your Assignment 00:00:00
Certification 00:00:00

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