30-10-2014, 03:00 PM
Abstract
Handling and disposal of electronic waste (e-waste) has become a major problem. Reviewed using inorganic materials used in manufacturing the traditional conventional materials. Alternative to this kind of material is being actively considered, some of which are already in use and pilot plant studies. This actually shows that the manufacturing problems have become much cheaper and further electronic waste becomes more manageable. Can be used for oxidation and ultimate safe disposal of all bio-degradable wastes, causing at least harm to the environment.
In previous copper or silicon for electronic components are used in the manufacture of semiconductors. A lot of research has been made using conductive polymers instead of silicon and copper. Their main polyacetylene, polyaniline and polypyrode derivatives and its conduction electron as "organic semiconductor" capability. These electrically conductive material is found to be in the range of 10 ^-9-10 ^3 ω ^-1cm^-1. This range is typically between metals and insulators. Use these organic materials have been classified as based on the molecular weight of the two groups.
(1) conjugated polycyclic compounds.
(2) the Hetro of cyclic compounds.
Both are used, because they form a thin film with a large surface area in semiconductors. However, after the liquid, fundamentalization the poor solubility of organic solvent and losses increase solubility. Such a small molecule is as a semiconductor, because it is beneficial to use it because they charge transport is easier to control. Made from organic radical in the field of microelectronics circuits of low-cost electronic components. This cannot be in the process of replacing silicon technology with high speed and precision of the color components, but you can replace the amorphous silicon applying identifying labels, smart cards and other digital security applications.
Organic materials like high efficiency light emitting organic light-emitting diode, high absorption coefficients of organic solar cells in the visible region, cheap materials and preparation of the most advantages of simple electronic circuits. And it consists of very few harmful elements. It has good quality as the semiconductor. Therefore, the polymer can also be LED (known as OLED) microdisplay applications play a vital role in vulnerability to numerous electronic circuit on a silicon chip, providing means of ultra-portable products new, including earphones to enjoy movies or cell phone with Internet access.