International Journal of Innovative Research and Development

Abstract

OLED’S are simple solid state devices that work on the principle of electro-luminescence. They comprise very thin films of organic compounds in the electro-luminescent layer. These organic compounds have a special property of creating light when electricity is applied to it. The organic compounds are designed to be in between electrodes. Out of these one of the electrodes should be transparent. The result is very bright and crispy display with power consumption lesser than usual LCD and LED. OLEDS emit light through a process called as electrophorescene every at  low operating voltages  through high efficiency .Like an LED,  an oled is solid state semiconductor   that device that is 100 to 500 nanometers thick or 200 times smaller than human hair. OLEDS can have either two layers or three layers of organic material. More the number of organic layers greater will be the efficiency. Like an lcd, the OLED does not require a backlight for its normal working. This makes them more advantageous in saving space and also weight. It also helps them in displaying deeper black levels than LCD’s. Oled is also capable of making high contrast ratio when it is displayed in a dark room than LCD as well as LED. An oled mainly consists of cathode anode and a organic layers. Based on the arrangement of cathode and anode OLEDS are divided into two type’s active and passive OLED.

OLEDs are used in small screen devices such as cell phones, PDAs and digital cameras. Research and development in the field of Oleds is proceeding rapidly now and may lead to future applications in heads- up displays, automotive dash boards etc.

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Abstract

We cannot imagine the world without electric power. Generally the power is transmitted through wires. This paper describes an original idea to eradicate the hazardous usage of electrical wires which involve lot of confusion in particularly organizing them. Imagine a future in which wireless power transfer is feasible: cell phones, household robots, mp3 players, laptop computers and other portable electronics capable of charging themselves without ever being plugged in, freeing us from that final, ubiquitous power wire. Some of these devices might not even need their bulky batteries to operate. This paper includes the techniques of transmitting power without using wires with an efficiency of about 95% with non radiative methods. Due to which it does not affect the environment surrounding. These techniques Includes resonating inductive coupling in sustainable moderate range. The coupling consists of an inductor along with a capacitor with its own resonating frequency. In any system of coupled resonators there often exists a so-called “strongly coupled” regime of operation. If one ensures to operate in that regime in a given system, the energy transfer can be very efficient. Another technique includes transfer of power through microwaves using rectenna. This is particularly suitable for long range distances ranging kilometers. With this we can avoid the confusion and danger of having long, hazardous and tangled wiring. This paper as a whole gives an effective, high performance techniques which can efficiently transmit the power to the required area vary in given distances for the power transmission through induction.

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