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Updated: May 15, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
09:00

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

Design of an efficient Fresnel-type lens utilizing double total internal reflection for solar energy collection

Ian Wallhead1, Teresa Molina Jiménez, Jose Vicente García Ortiz

  • 1AIDO, Instituto Tecnológico de Óptica, Color e Imagen, C/ Nicolás Copérnico, 7-13, Parque Tecnológico, 46980, Paterna, Valencia, Spain. iwallhead@aido.es

Optics Express
|January 18, 2013
PubMed

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P-N junction01:11

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...