Pesquisa e conceituação de um espectrômetro óptico

Abstract

According to Ferreira (2012) the spectral response of a photovoltaic device is its ability to convert the incident radiation from certain bands of the spectrum in electrical energy. Therefore, when analyzing the spectral response of a kind of photovoltaic cell, we can define which range of radiation the photovoltaic cell works most efficiently. If we analyze the data from ASTM G173-03 (2003), most of the solar radiation that reaches the Earth's surface is located in the range from 300 nm to 2000 nm. However, this radiation can vary according to the region, date and time due to several factors, as shown by Bird (1981). There is equipment, spectrometers, capable of making measurements to build the spectrum of solar radiation. The objective of this article is basic and applied research, as well as the concept for the construction of a low-cost spectrometer, which measures specific ranges of radiation and, based on knowledge bases, estimates the incident solar radiation spectrum. By way of the proposed technique in this work, it is possible to reduce the number of analyzed points from the spectrum and reduce the accuracy of the sensors in order to estimate the solar spectrum. In other words, there is an exchange between investment in hardware by applying the knowledge bases. The estimated spectrum can be applied to analyze the different photovoltaic cell technologies, in order to define which technology is the most efficient in that location, for a given atmospheric condition.