Transparent electronics

Performing Seminar in Dept. of Electronics and Communication Engineering.

GHOUSIA COLLEGE OF ENGINEERINGRamanagaram 562159

Priyanka.N1GC10EC052

8TH SEMESTER

Under the Guidance of

MRS. SHAMSHAD BEGUMLECTURER

OUTLINE Introduction Combining optical transparency with electrical conductivity Burstein-moss(BM) shift Schematic band structure of TCO host Factors causing adverse effect Electrical properties of TCO Octahedral coordination of oxygen atoms by cations Carrier generation in TCO Transparent electronic devices Passive, linear devices Transparent thin-film transistor(TTFT) Applications Future scope Conclusion References

INTRODUCTION

• INVISIBLE ELECTRONICS

• TRANSPARENT CONDUCTING OXIDE (TCO)

(In2O3, SnO2, CdO, ZnO )

• DRAMATICAL CHANGE IN THE LOOK AND USE

OF ELECTRONIC DEVICES

COMBINING OPTICAL TRANSPARENCY WITH ELECTRICAL CONDUCTIVITY

• DEGENERATE DOPING

• BURSTEIN - MOSS(BM) SHIFT

BURSTEIN-MOSS(BM) SHIFT

SCHEMATIC BAND STRUCTURE OF TCO HOST

FACTORS CAUSING ADVERSE EFFECT

INTER-BAND AND INTRA- BAND TRANSITIONS

PLASMA OSCILLATIONS

IONIZED IMPURITY SCATTERING

ELECTRICAL PROPERTIES OF TCO

•SIMILAR CHEMICAL, STRUCTURAL AND ELECTRONIC PROPERTIES

•POST TRANSITION METALS

• INTERACTION BETWEEN THE S ORBIT OF METALS AND P ORBIT OF OXYGEN

OCTAHEDRAL COORDINATION OF OXYGEN ATOMS BY CATIONS

CARRIER GENERATION IN TCO

TWO METHODS:-

SUBSTITUTIONAL DOPING

OXYGEN REDUCTION

SUBSTITUTIONAL DOPING

DOPING WITH ALIOVALENT IONS

DOPING WITH GROUP III, IV AND VII ELEMENTS

ELECTRON VELOCITY AND DENSITY AT FERMI LEVEL RESULT IN THE TREND

In>Y>Sc>Ga

OXYGEN REDUCTION

REMOVAL OF OXYGEN ATOM FROM A METAL OXIDE

RELATIVELY UNIFORM CHARGE DENSITIES

FORMATION OF F-CENTER IN LIGHT METAL OXIDES

TRANSPARENT ELECTRONIC DEVICES

SELECTION, DESIGN, SIMULATION, FABRICATION, INTEGRATION, CHARACTERIZATION AND OPTIMIZATION

PASSIVE, LINEAR DEVICES TWO TERMINAL ELECTRONIC DEVICES TRANSPARNT THIN-FILM TRANSISTORS

(TTFTs)

PASSIVE, LINEAR DEVICESTRANSPARENT THIN FILMRESISTORS

TRANSPARENT THIN FILM CAPACITORS

TTFI(INDUCTOR)

TRANSPARENT THIN-FILM TRANSISTORS (TTFTs)

APPLICATIONS

MOBILE PHONESLAPTOPS

TRANSPARENT CONDUCTORS

SOLAR PANELSTRANSPARENT WASHER

FUTURE SCOPE

SOLAR WINDOWS

IMPROVING STABILITY OF TRANSPARENT SOLAR CELLS

TECHNOLOGICAL ADVANCES

CONCLUSION AND REMARKS

GREAT IMPACT ON HUMAN MACHINE INTERACTION

LEAD TO NEW APPLICATIONS CAUSE ENVIORNMENTAL

CHALLENGES AS CURRENTLY USING EC DEVICE

THANKS