Production and characterization of sensors photovoltaic (PV) of radiation UV

N. KONDRATIUK; M. G. MARTÍNEZ BOGADO; M.J.L. TAMASI

CABA

Seminario; XVII Juan José Giambiagi Winter School; 2015

DEPARTAMENTO DE FÍSICA, FCEYN, UBA

The photovoltaic sensors can be use in general in any situation where the excitation of entry is a luminous radiation, in the range of wave lengths where they are sensitive, delivering an electric signal on the output. Especially its in terrestrial utilization, the photovoltaic radiómetros are very spread for the measurement of solar radiation due to the low cost compared with thermoelectricsensors as the piranómetros.These sensors have a semiconductor as a sensing element on that on having received a radiant flow generates a current proportional to the irradiance received which, as it flows through a load resistor, generates a potential difference; this response is not flat but selective depending on thewavelength of the radiation.PV sensors that are made in the laboratory of Solar Energy Department of CNEA possess a structure n+pp+ on commercial wafers of If monocrystalline type p. The issuers n+ and p+ they are formed from a codifusión of P and Al.In order to improve the response of the sensors in the UV region it is necessary to modify the process parameters such as temperature, gas flow and time. In this way is possible to have the technology to manufacture sensors that measure a specific portion of the solar spectrum which would allow the instrument to adapt to the need of the user and in particular to obtain photovoltaic sensors suitable for use as indicators of radiation UV.