Physics of organic electronic devices

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Publisher Summary This chapter discusses the basic device physics that governs the operation of organic electronic devices. Organic electronic devices are a new class of solid state electrical devices that have been the subject of intense research in the last decade. The two most widely studied devices are light-emitting diodes (LEDs) and field-effect transistors (FETs). These organic devices are attracting considerable interest because they have processing and performance advantages for low-cost and/or large-area applications. An organic light-emitting diode consists of a thin-film of a luminescent organic material contacted by metal electrodes on the top and bottom of the film. One electrode serves as an electron injecting contact and the other as a hole injecting contact. Organic electronic devices use undoped, insulating organic materials as the light-emitting and charge-transporting layers. The charge carriers in the devices are injected from the contacts. Electronic devices based on doped organic materials have not been developed in a manner analogous to doped inorganic semiconductor devices.