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Dispositivo de medición rápida de la respuesta espectral

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20151218001
Publicado:
14/01/2016
Caducidad:
14/01/2017
Resumen:
Una universidad española ha desarrollado un sistema de muy bajo coste para analizar en tiempo real la respuesta espectral de cualquier tipo de material mediante un sistema de acoplamiento óptico compuesto por una serie de LEDs cuasimonocromáticos modulados en frecuencia. Este sistema puede emplearse en distintas aplicaciones, aunque se ha diseñado para células solares. El sistema permite controlar la energía de la radiación emitida y el área espectral de forma rápida y precisa. La universidad está interesada en licenciar la tecnología.


Details

Tittle:
Device for rapid measurement of spectral response
Summary:
A Spanish university has developed a very low cost system to analyze in real time the spectral response of any kind of material by means of an optical coupling system composed of a series of quasimonochromatic LEDS modulated in frequency. It can be used for different applications, although it was designed for being used in solar cells. It allows to control the power of the emitted radiation and the spectral area in a precise and rapid way. The university would like to license the technology.
Description:
A Spanish university has developed a device able to drastically reduce the time needed to perform spectral responses measurements of all kinds of materials. The device is composed of an adjuster in the shape of a truncate cone, that has been specially designed to simplify the manufacture and substitution of LEDs. This design permits the superposition and focalization of the emitted light over a small area where the study sample should be placed. In addition, an X-Y table is used in order to allow the displacement of the optical unit. Thus, a spectral response mapping can be computed over bigger samples in a very short period. The equipment can be used for really different applications, although it has been designed with the objective of being integrated in a quick spectral response device (VFSR) for solar cells. The optical adjuster is based in the use of quasimonochromatic LEDs operating in coordination. Electric power is supplied by means of a sinusoidal wave with a DC (direct current) component. Each LED operates in a different frequency. Thus, each diode will be continually on and will only modulate its light in a known frequency. LED radiation is added in the optical adjuster, allowing the simultaneous lightning of the solar cell (DUT). Applying the Fast Fourier Transform (FFT) to the current signal generated by the DUT, it is possible to associate different components to different LEDs. Moreover, an External Quantum Efficiency (EQE) curve can be derived as each monochromatic LED has a known peak wave. The measurement principle of the VFSR equipment is the method of differential spectral response (DSR), where the spectral response of DUTs is compared with the spectral response of a calibrated photodiode. The university would like to find a partner involved in spectral responses measurements that would like to sign a license agreement.
Advantages and Innovations:
· Real time analysis, which allows a drastic reduction of measurement periods.
· Very low cost, allowing the development of measurements that generally need the use of laboratory facilities.
· Customizable to every kind of application in which the system response to infrared or visible radiation is needed.
· Scalable to different requirements by means of the interchange of LEDS, it is possible to adapt the spectral response to different wavelengths.
· It allows the automation of the characterization process.
· Low relation signal/noise of the measurements.
Stage of Development:
Prototype available for demonstration
IPs:
Secret Know-how

Partner sought

Type and Role of Partner Sought:
The university would like to find a partner involved in spectral responses measurements who would like to license the technology.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
01002003 Electronic engineering
09001006 Ensayos de material óptico
09001002 Métodos e instalaciones de ensayo / análisis
09001009 Tecnología de sensores relacionada con la realización de medidas