1. A presentation on fermi fet technology
Submitted By-:
Shashank Joshi
Mahesh Bhatt

2. OVERVIEW Introduction to Fermi FET Technology
Surface Channel Inversion Devices
Buried Channel Accumulation Devices
Difference between BCA and SCI devices
Fermi FET
Applications of Fermi FET
Conclusion
References

3. Introduction to Fermi FET
Fermi FET devices were manufactured and patented by Thunderbird Technologies.
Fermi FET can lead to significant improvement in circuit performance, power requirements and manufacturing costs.
This technology merges the mobility of BCA devices as well as the higher short channel effect immunity of SCI devices

4. SURFACE CHANNEL INVERSION DEVICES
Surface channel inversion devices were developed due to their reduced short channel effects.

5. ADVANTAGES AND DISADVANTAGES OF SCI DEVICES
Short channel effects were greatly reduced in SCI devices.
Transistor scaling was successfully implemented in SCI devices.
Disadvantages
Mobility of charge carriers is reduced.
High parasitic capacitance and polysilicon depletion.

6. BURIED CHANNEL ACCUMULATION DEVICES
For longer channel widths BCA architecture is widely
used. The mechanical structure of BCA devices are very
similar to SCI devices but their working is different.

7. MERITS AND DEMERITS OF BCA DEVICES
Mobility of charge carriers is improved in BCA devices.
Vertical field within channel is lower due to availability of channel.
DEMERITS
Transistor scaling is not possible.
Due to fermi level at certain depth, it is difficult to shut the device off.

8. DIFFERENCES BETWEEN BCA & SCI DEVICES
In BCA devices, polysilicon gate is doped as p-type whereas in SCI devices gate is doped as n-type.
In BCA devices, there is a channel between the source and drain whereas an inversion channel is formed in SCI devices.
Mobility of charge carriers in SCI devices is poor whereas it is much improved in SCI devices.

9. FERMI FET
The buried channel transistors had fermi level at a considerable depth thereby making it difficult to shut the device off. Attempts to bring fermi level up results in severe degradation of device performance. Thunderbird Technologies took one step further and produced the FERMI FET device.

10. LOGO OF THUNDERBIRD TECHNOLOGIES

11. APPLICATIONS
DSP
MPU
MCU
LOGIC GATES
SRAM
COMMUNICATION SYSTEM

12. Digital signal processing method
A Microcontroller

13. CONCLUSION Fermi Fet has revolutionised the transistor technologies.
Gate lengths have been reduced, without compromising with the performance of the transistors devices.
As this technology is recent, so there are lot more fields where this technology can be applied successfully.

14. REFERENCES http://www.tbird.com/technology.html

15. THANKYOU