Difference between LED and Photodiode (with comparison chart) - Electronics Coach
Simple Infrared LED and Photodiode Tester - Instructables
IR-Photo Diode Sensor | forElectronics
Photodiodes and Powerful LEDs from Jenoptik | Jenoptik USA
Spectral Responses of Light‐Emitting Diodes as a Photodiode and Their Applications in Optical Measurements - Shin - 2016 - Bulletin of the Korean Chemical Society - Wiley Online Library
Photodiode Theory of Operation | Optoelectronic Components | LEDs, Laser Diodes & Detectors | AP Technologies UK
LED als Fotodiode
Blood and pulse monitor chip has 3 LEDs plus photodiode
Multi-chip LEDs for specimen testing and analysis - Ushio Europe B.V.
Photodiode Chip Design
microcontroller - Using a LED like a photodiode to measure light - Electrical Engineering Stack Exchange
comparator - How to light an LED controlled by a photo-diode - Electrical Engineering Stack Exchange
Difference Between Light Emitting Diode and Photodiode | Differences
LED als Fotodiode - Schizophrene Leuchtdiode
Circuit diagram of (a)LED light source and (b) photodiode circuit | Download Scientific Diagram