TRANSPARENT ELECTRONICS

Kanav mansotra

CONTENTS INTRODUCTION OBJECTIVE WORKING APPLICATION FUTURE SCOPE CONCLUSION REFERENCES

INTRODUCTION

Transparent electronics (also

called as invisible electronics)

is an emerging technology.

It employs wide band-gap

semiconductors for the

realization of invisible circuits

and opto-electronic devices. 

….Our objective….

TRANSPARENT

HOW TRANSPARENT ELECTRONIC DEVICES WORK?

The challenge for producing "invisible" electronic circuitry and opto-electronic devices is that the transistor materials must be transparent to visible light yet have good carrier mobilities which requires a special class of materials having "contra-indicated properties". Oxide semiconductors are very interesting materials because they combine simultaneously high/low conductivity with high visual transparency. Transparent oxide semiconductor based transistors have recently been proposed using as active channel intrinsic zinc oxide (ZnO).

Oxides play key role:

The main advantages of using ZnO are:1. The fact that it is possible to growth at/near room

temperature high quality polycrystalline ZnO, which is a particular advantage for electronic drivers, where the response speed is of major importance.

2. Since ZnO is a wide band gap material (3.4 eV), it is transparent in the visible region of the spectra and therefore, also less light sensitive.

The second is amorphous oxides with heavy metal content, such as amorphous InGaZnO4 (a-IGZO) also used in this application.

A comparison of ZnO and a-IGZO(indium gallium zinc oxide)shows that ZnO has the lead when it comes to carrier mobility. At present, though, a-IGZO is the material of choice for large-area displays, electronic paper utilizing low-temperature processing, etc.

Oxides

ZnO InGaZnO4

The major substrate used for this purpose is Glass.

COMBINING OPTICAL TRANSPARENCY WITH ELECTRICAL CONDUCTIVITY

•DEGENERATE DOPING

• BURSTEIN - MOSS(BM) SHIFT

BURSTEIN-MOSS(BM) SHIFT

Transparent electronic devices

Transparent Passive devices

Transparent Active devices

KEY PLAYERS

MARKET OF TRANSPARENT ELECTRONICS

CONCLUSION

•Holds the key for many future advancements in security,

entertainment efficient utilization of energy.

•Appealing class of seethrough devices will have great impact

on the human–machine interaction in the near future.

•Environment Friendly-Reduction of environment pollution

caused by traditional techniques.

REFERENCES ‘Transparent Electronics ’, Springer publications,

J.F.Wager, D. A. Keszler, R. E. Presley.  ‘Transparent electronics: from synthesis to applications’, Wiley publications: Antonio Facchetti, Tobin J. Marks.  www.wikipedia.org  www.ieee.org  www.alternative-energy-news.info/transparent-a- solar-energy-breakthrough/  www.nanomarkets.net  www.nikkeibp.co.jp

Q&A

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