Presentation on theme: "Ahmed Mohamed El-Sayed"— Presentation transcript:
1 Ahmed Mohamed El-Sayed Faculty of SciencePhysics DepartmentThin Film LabInfluence of TiO2 Nano-particles on performance of Fabricated Organic Zener diodePresented ByAhmed Mohamed El-SayedEl-MahalawyThin Film laboratory, Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
2 Organic Semiconductors InorganicSemiconductorsOrganicRigid and should be prepared on glass, Si, GaAs, ….or any rigid substrate.Lighter, more flexible, compatible with plastic substrates and have high electron mobility.AdvantagesNeeds high vacuum techniques and high costBiodegradable, and not explained in details yetDisadvantagesUltra Clean roomNo vacuum and no high temperature processes(60-120oC)ProcessingVery high cost$100 / ft2Low cost in high large production$5 / ft2Cost
4 Experimental Work(C14 H4 O6)1- Thin films of NTCDA were prepared using physical vapor deposition technique Edwards E306A2- Thin films of TiO2 were prepared using spin coating unit as interlayer between NTCDA and NiTTP
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 voltage1.4 μA (without interlayer)and21 μA (with TiO2 interlayer)21 μA (RD2.0S to RD120S and 1N5221B - 1N5263B)Reverse current1.1×106Ω (without interlayer)2.9 ×104Ω (with TiO2 interlayer)3.2 ×104Ω (RD2.0S to RD120SDynamic 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 workWe 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 diodeWe are planning to use this potential organic material NTCDA in photovoltaic applications in elastic forms.