Title: Optimized energy harvesting approach: Infra-red photo voltaic cells

Abstract

Optimal energy solution for any specific requirement depends on geographical location, simplicity of mechanism, technical stability, energy harvesting capabilities, and cost. Wind energy though relatively cheap, but termed sporadic due to non-consistent conditions and periodic maintenance requirement for the extraction mechanisms. Solar energy is a rich energy source with the possibility of exploiting anywhere during day time, and a relatively cheap & noiseless renewable energy source. Though solar energy is pollution-free with less impact on the eco-system, it does have limitations, mainly due to its intermittent nature, attributed to sun availability for specific hours (e.g. during daytime only) and the energy conservation efficiency may be considerably low. Sunlight being a shallow source of energy does require a large area for the collection of a considerable amount of energy. We grasped the idea from MIT cutting edge research focused to harness IR spectrum portion within the solar spectrum. In this research work, we have proposed the design of a multifunctional and relatively efficient energy harvesting mechanism that can also work in the near-infrared region. The design is based on nano-meter sized optical waveguide imprints on micrometer sized conventional window glass ensuring concentrated photon absorption in the infra-red region. Besides conventional SOI optical waveguides, chalcogenides is also implemented. The dispersive and losses effects calculations provide further knowledge about the state of the window panes transparency / opacity. Besides leading towards a simple way of energy harvesting; the basic platform (window panes) can still be used for enjoying sunlight inside the rooms as well. The research will open more avenues in the field of photo-voltaic power generation.

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