1. Ahmed Mohamed El-Sayed
Faculty of Science
Physics Department
Thin Film Lab
Influence of TiO2 Nano-particles on performance of Fabricated Organic Zener diode
Presented By
Ahmed Mohamed El-Sayed
El-Mahalawy
Thin Film laboratory, Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt

2. Organic Semiconductors
Inorganic
Semiconductors
Organic
Rigid and should be prepared on glass, Si, GaAs, ….or any rigid substrate.
Lighter, more flexible, compatible with plastic substrates and have high electron mobility.
Advantages
Needs high vacuum techniques and high cost
Biodegradable, and not explained in details yet
Disadvantages
Ultra Clean room
No vacuum and no high temperature processes(60-120oC)
Processing
Very high cost
$100 / ft2
Low cost in high large production
$5 / ft2
Cost

3. Organic Electronics Revolution
Organic FET
Organic LED
Organic RFID
Organic PVC
First Organic Microprocessor
(2015)

4. Experimental Work
(C14 H4 O6)
1- Thin films of NTCDA were prepared using physical vapor deposition technique Edwards E306A
2- Thin films of TiO2 were prepared using spin coating unit as interlayer between NTCDA and NiTTP

5. Preparation of Organic Zener Diode

6. Characterization the Prepared Devices
The current–voltage (I–V) characteristics of the fabricated devices were investigated at room temperature by using a computerized electrometer 6517B under dark condition

7. Our prepared organic zener diode Commercial zener diodes
15volt( with and without TiO2)
15Volt (RD16S )
Breakdown voltage
1.4 μA (without interlayer)and
21 μA (with TiO2 interlayer)
21 μA (RD2.0S to RD120S and 1N5221B - 1N5263B)
Reverse current
1.1×106Ω (without interlayer)
2.9 ×104Ω (with TiO2 interlayer)
3.2 ×104Ω (RD2.0S to RD120S
Dynamic resistance

8. Conclusion Future work
Organic zener diode was successfully fabricated using NTCDA as (N-type semiconductor) and NiTTP as (P-type semiconductor)
TiO2 nano-particels interlayer improved the performance of NTCDA/NiTTP zener diode which was comparable to commercial zener diodes.
Future work
We are going to complete this experiment by investigating the effect of interlayer thickness.
We are planning to exploit sensitivity of NTCDA in fabrication gas sensors in the form of diode
We are planning to use this potential organic material NTCDA in photovoltaic applications in elastic forms.

9. The Only Published Organic Zener Diode