I created my own revision notes for all units of the Higher Physics course.
These are revision notes for part of the 3rd unit (Radiation and Matter), section 3 (Optoelectronics and Semi-conductors). I've uploaded all the subsections of this section in different files as they are otherwise too large.
Photodiodes and LEDs covers:
â€¢ What a photodiode is
â€¢ Photodiode symbol
â€¢ Photodiode in photovoltaic mode
â€¢ Photodiode in photovoltaic mode in a circuit
â€¢ Photodiode in photoconductive mode
â€¢ Photodiode in photoconductive mode in a circuit
â€¢ Other photodiode properties
â€¢ LED circuit symbol/in a circuit
â€¢ How to recognise an LED
â€¢ How an LED works
â€¢ Related equations