A review of the trend in technology development, in particular the advancements in recent years and the future work required,The PV/T collectors are very promising devices which enable better space utilization, savings during supporting construction and simultaneous conversion of solar radiation into the thermal and electrical energy and other various methods from manufacture to optimized design is discussedĮnergy from the sun has sustained man's activities for thousands of years.
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to improve the light trapping, concentrators are used to increase the energy output of the solar system and other various methods from manufacture to optimized design is discussed. The potential of PV is part of the potential of all kinds of utilization of solar radiation energy. Of the total solar radiation reaching the earth s surface each year only a minute part (about 0.003%) is equivalent to global electricity demand today. Although the theoretical potential of PV worldwide is very high, it is difficult to quote 2 0 1 9 a single figure for this potential. Solar Energy is one of the proposed approaches, These devices produce electricity directly from electromagnetic radiation, especially light, without any moving parts. With the increase in the demand of electrical and the oncoming predicted energy crises due the shortage of thermal driven plant fuels, it is inevitable to choose for a sustainability approach in order to provide for the shortcomings in the given scenario.
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We also envision technological pathways and future prospects to exploit multifunctionality of graphene and carbon nanotubes to realize ubiquitous application of high-performance, flexible PHJ solar cells. Fabrication and functionalization strategies of graphene and carbon nanotube films for electronic and pho-tonic optimization of PHJ solar cells are systematically reviewed. Here we discuss the state-of-art progress in graphene-based and carbon nanotube-based PHJ solar cells leveraging advanced nanocarbon technologies as well as industrial-compatible solar cell design and processing. In recent years, graphene and carbon nanotube films have underpinned significant advancement in the planar heterojunction (PHJ) solar cells, with reduced fabrication cost, improved power conversion efficiencies approaching 20%, and the great potential for scalable deployment. Graphene and carbon nanotubes, featured with outstanding electronic, photonic and mechanical properties as well as Earth abundancy, are perfect for use as carrier-selective transport and collecting layers in photovoltaics.