This paper will discuss the science of nanowire technology in the field of solar energy. It will elaborate on how this recent innovation improves upon the current methods in efficiency, cost, and durability. The value of this technology to its field, and its ability to make solar power a viable worldwide option will also be discussed. It is estimated that the world’s supply of fossil fuels will be reduced to a bare minimum during this century. Renewable energy sources such as wind and solar This paper will discuss the science of nanowire technology in the field of solar energy. It will elaborate on how this recent innovation improves upon the current methods in efficiency, cost, and durability. The value of this technology to its field, and its ability to make solar power a viable worldwide option will also be discussed. It is estimated that the world’s supply of fossil fuels will be reduced to a bare minimum during this century. Renewable energy sources such as wind and solar energy have yet to become major contributors to our energy supply due to their cost and efficiency. Presently, nanotechnology is being introduced into the field of solar energy to combat this fault and improve both efficiency and cost. Nanowire solar cells that have already been developed are mostly based on hybrid organic-inorganic materials or are made of semiconductors. Presently the efficiency produced by the traditional crystalline silicon based solar cells is approximately 6.5% [1]. These first attempts at using nanowires in solar cells have increased this efficiency up to 8.5%. New technologies are looking into all-inorganic solar cells based on silicon nanowires. The silicon nanowires are relatively easy to synthesize and can be used with low cost substrate technologies like glass and metal foil. These low cost substrates will allow the nanowires to be not only durable but also much easier to produce than current silicon base solar cells [2]. Overall the continued developments in fields such as this are crucial if we as a nation are committed to securing the stability of our economy. تفاصيل المقالة

The current standards of display technologies, such as liquid crystal display (LCD), light emitting diode (LED) and plasma, are limited by their physical and aesthetic properties. Organic light emitting diode (OLED) displays do not have these limitations. They offer many advantages over these standards by being more efficient and versatile, in addition to being flexible and transparent [1]. Because of OLED’s superior flexibility, they are also much more durable than other display technologies. Not only are the physical characteristics of OLED displays superior to its competitors, they produce sharper images in vivid colors that are unable to be produced on other displays [2]. These physical and aesthetic advantages are possible because of an OLED’s unique composition consisting of very thin layers of material [3],[4]. This is unlike, and superior to, other displays which rely on bulky multi-component structures that need to be bound together. As a direct result of their superior characteristics, OLED displays enable the production of electronics with greater sustainability than current display technologies, such as flexible handheld devices and transparent displays. While OLED displays are not without their own limitations, color longevity and moisture sensitivity being a few, they are overall a far superior alternative to the current standards of display technologies and can be used to create a generation of sustainable electronics. تفاصيل المقالة

The charge carrier mobility is a key performance criteria for organic semiconductors. High-mobility values allow fast device operation as needed for low-cost electronics on large areas with performance meeting market demands. Mobility is conveniently extracted from thin film transistors (TFT) characteristics using the standard gradual channel approximation model. This approach evaluates the mobility of charges during their transport through the high-density accumulation layer at the semiconductor-dielectric interface. This value is therefore directly representative of transistor operation and is a relevant parameter for device integration into circuits. In this paper we have calculated the mobility of an organic semiconductor, one can use percolation theory,. The current flows through the bonds connecting the sites in the network. So far, much attention has been devoted to explain the temperature dependence of the mobility. The model gives a non-Arrhenius-type temperature dependence, which has also been supported by numerical simulations and analytical calculations. تفاصيل المقالة

Optical properties of semiconductors, dielectrics and metals play a key role in the development of thin film solar cells. While these devices belong to photon photodetectors both the photon and wave nature of light affects their performance. Some of these problems are discussed. In this Paper we Solve the Schrodinger equation using the numerical method of finite difference approximation and assume that the structure of our quantum dot molecule is two cubic GaAs quantum dots in the AlxGa1-xAs medium with dimensions .By simulation the energy of exciton dependence with different molar coefficients, it was observed that: In sample, the exciton binding energy decreases with increasing molar coefficient. At a constant molar coefficient, the exciton dependence energy increases as the potential barrier width increases. At a constant molar coefficient, the exciton binding energy increases as the potential well width increases. تفاصيل المقالة