39 Effect of Light on Minority Carrier Concentration | Optical Generation & Recombination

What happens to the Carrier Concentration when light falls on a semiconductor? ☀️

In this video, we derive the Continuity Equation for Optical Generation.
We discuss:
1. *Generation Rate (G_op):* How photons create Electron-Hole pairs.
2. *Excess Carriers:* The huge impact on Minority carriers vs the negligible impact on Majority carriers.
3. *Recombination:* How the concentration returns to equilibrium when light is turned off (Lifetime t).



Essential for understanding Photodiodes, Solar Cells, and Optical Communications.

#Optoelectronics #Semiconductors #Physics #GATE2025 #Engineering #edc

🎓 Welcome to the Core Engineering Journey!

Core Placement series:    • Core Placement - Dream Company | ECE,EEE,I...  
EDC | Semiconductor Physics:    • Semiconductor Physics | Electronic Devices...  
Gen-AI Foundation course:    • Gen-AI Foundation course | ChatGPT, Claude...  
Digital Electronics:    • Digital Electronics | Core Placements, Col...  


Are you an ECE, EEE, CSE, IT or IN student with a passion for understanding how real technology works — not just for exams, but for your engineering journey and future career?
You’ve found your place! This channel is built for those who want to master core engineering concepts, crack GATE, IES, PSU exams, and also stay updated with the AI-driven future of engineering.

Here, we go far beyond textbooks —

🔹 Fundamental Concepts Simplified
Electronics, Electrical, and Instrumentation concepts explained from the ground up with clarity and real intuition.

🔹 Subject-Wise Deep Dives
Semiconductor Physics, Analog & Digital Electronics, Control Systems, Communication Engineering, Power Systems, Network Theory, plus advanced domains like VLSI, Embedded Systems, and Signal Processing.

🔹 Core + AI Integration
Understand how AI blends with core engineering:

AI in chip design

Machine learning in signal processing
AI-based automation & robotics
Smart sensors and IoT systems
Industry 4.0 technologies
AI-driven debugging, testing, and manufacturing

🔹 GATE, IES, and PSU Preparation
Smart strategies, high-yield topics, short tricks, and PYQ problem solving to boost exam accuracy and confidence.

🔹 Real-World Engineering Insights
Learn how the concepts you study power modern technologies — from semiconductor fabrication and EV power electronics to telecom networks, power grids, and AI-enabled devices.

We strongly believe core engineering is not outdated — it’s the backbone of every modern innovation.
And when combined with AI, it becomes even more powerful and future-proof.

💡 Let’s learn, build, and grow together — because your Core + AI Engineering Journey starts here! ⚙️