Transparent electronics is an emerging field focused on producing transparent electronic devices using transparent materials instead of opaque semiconductors. Transparent conducting oxides (TCOs) like indium tin oxide are materials that have both optical transparency and electrical conductivity properties that are key for transparent electronics. Transparent electronics devices include transparent thin-film transistors and can be used for applications like see-through displays, solar windows, and invisible cameras and RFIDs.

2. Transparent electronics is an emerging science and
technology field focused on producing transparent/invisible
electronic circuitry and devices.
 In transparent electronics the usual opaque semiconductor
materials forming the basis for electronic device fabrication is
replaced with transparent materials.

3. A transparent material is an insulator which possesses
completely filled valence and empty conduction bands.
large carrier concentrations desired for a good
conductivity may result in an increase of the optical
absorption .
Plasma Oscillations.

4. Converting idea into reality

6. TCOs constitute an unusual class of
materials possessing two physical
properties:
o Optical Transparency
o Electrical Conductivity

7.  ZnO
 In2O3
 CdO
 ITO (Indium Tin Oxide)

8. Substitutional Doping
Oxygen Reduction

9. S.
No.
Compound
Semiconductor
Dopant Preparation
technique
01. NiO Li Pulsed laser
deposition
02. ZnO Na, Mg Sol gel. Annealing
03. Cr2O3 Al, N Spray Pyrolysis
04. Mg1-xZnxO In Pulsed laser
deposition

11. Transparent
Conducting
Devices
Passive
TTFR TTFC TTFI
Active
TTFT

12. Expected to operate at lower frequencies
Expected to exhibit linear or very near
linear behaviour

14. Capacitor must have linear current voltage
derivative property.
Large capacitance density is required to minimize
the size.
Thin insulator with high dielectric constant value is
the best.

16.  Inductor must have linear Voltage current
derivative property.
A large ‘Q value’ is better (Q=(2πf L/RL)).
Expected to behave in anon-ideal manner.

17.  Constitutes the heart of transparent electronics
 Formed from highly insulating, wide band gap
transparent semiconductor(ZnO)
 Source, drain and gate contacts are made from
highly conductive TCO (ITO)
 Two possible configurations are:
a. Bottom gate
b. Top gate

21. Visible Transparency
Low Temperature Processing
Robust stable inorganic materials
Safe and Non toxic
Low Cost

22. High resistance of TCOs
Lack of complementary devices
Low frequency operation (from KHz
to few MHz)
Technological Immaturity

23. APPLICATIONS

24. See through or novel display structures
Active Matrix Organic Light Emitting Device
display backplane (AMOLED)
Value added glass
Invisible cameras and Invisible RFIDs
Transparent solar cells or Solar windows

26. CONCLUSIONS
Great impact on Human-Machine
interactions in near future
New applications like solar windows
holds the key for many future
advancements in security,
entertainment and efficient utilization
of the energy
New business opportunities are
arising
Doors to the new world will open