نتایج جستجو برای: photovoltaic devices
تعداد نتایج: 219934 فیلتر نتایج به سال:
In blended hybrid systems distinct microor nanostructured materials can be formed by phase separation. Network structures of particles or rods in a polymer matrix can be developed via self-assembly. We use this blending approach to compare active materials for application in solar cell devices. Blends were fabricated from either poly(hexylthiophene) P3HT or poly(triphenylamine) PTPA mixed with ...
The power conversion efficiency (PCE) of single-wall carbon nanotube (SCNT)/n-type crystalline silicon heterojunction photovoltaic devices is significantly improved by Au doping. It is found that the overall PCE was significantly increased to threefold. The efficiency enhancement of photovoltaic devices is mainly the improved electrical conductivity of SCNT by increasing the carrier concentrati...
Our planet's ecosystems depend on the energy received from sun to form a bubble of life. Technically, other sources are converted solar energy. An effective way directly convert electricity is through photovoltaic devices. They could be manufactured small scales and used in pocket calculations up large power plants. These stations, known as farm, composed grid-connected arrays. The conventional...
It is increasingly obvious that the molecular conformations and the long-range arrangement that conjugated polymers can adopt under various experimental conditions in bulk, solutions or thin films, significantly impact their resulting optoelectronic properties. As a consequence, the functionalities and efficiencies of resulting organic devices, such as field-effect transistors, light-emitting d...
Solution-processed organic photovoltaic cells (OPVs) hold great promise to enable roll-to-roll printing of environmentally friendly, mechanically flexible and cost-effective photovoltaic devices. Nevertheless, many high-performing systems show best power conversion efficiencies (PCEs) with a thin active layer (thickness is ~100 nm) that is difficult to translate to roll-to-roll processing with ...
Solar power presents the opportunity for a revolution in worldwide energy generation. However, photovoltaics have yet to be the source of more than 0.1% of the energy generated worldwide. Our research is centered on developing technologies aimed at decreasing the cost/power output of III-V group photovoltaic cells. III-V photovoltaic devices consistently rank as some of the highest in efficienc...
Polymer solar cells (PSCs) have attracted great attention in recent years because of their advantages of easy fabrication, low cost, light weight, and potential for flexible devices. However, the power conversion efficiency (PCE) of the PSCs needs to be improved for future commercial applications. Factors limiting the PCE of the PSCs include the low exploitation of sunlight due to the narrow ab...
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