This document summarizes semiconductor junction devices, including intrinsic and extrinsic semiconductors like N-type and P-type materials. It discusses the energy levels of these materials and how PN junctions are formed between them. It also describes how current flows through a PN junction when it is forward or reverse biased. The document lists textbooks and references for further reading on topics like semiconductor optoelectronic devices and materials.

1. SEMICONDUCTOR-JUNCTION
DEVICE
D.Gopinath AP/ECE
Ramco Institute of technology
Academic year (2017-18 Odd)

2. Intrinsic Semiconductor

3. Extrinsic semiconductor-
N-type semiconductor

4. Energy levels of N-type semiconductor

5. P-type semiconductor

6. Energy levels of P-type semiconductor

7. Excitons

8. PN-Junction

11. Current flow in a forward biased PN
Junction

13. Current flow in a Reverse biased PN
Junction

14. • TEXTBOOKS:
• Pallab Bhattacharya “Semiconductor Opto Electronic
Devices”, Prentice Hall of India Pvt.,Ltd., New Delhi, 2006.
• Jasprit Singh, “Opto Electronics – As Introduction to
Materials and Devices”,
• Mc Graw-Hill International Edition, 1998
• REFERENCES:
• S C Gupta, Opto Electronic Devices and Systems, Prentice
Hal of India, 2005.
• J. Wilson and J.Haukes, “Opto Electronics – An
Introduction”, Prentice Hall, 1995

15. THANK YOU