Title :
Quantum Efficiency measurement setup for the near-infrared range
Author :
Pan, A.C. ; Del Canizo, C. ; Hofstetter, J. ; Luque, A.
Abstract :
The quantum efficiency measurement provides an important information of the solar cell performance. In this paper we report on the extension of the external quantum efficiency measurement to near-infrared range. It is necessary to characterize the effect of up-converter layers on the rear of bifacial silicon solar cells, which can enhance the performance of solar cells as they have the ability to condition the solar spectrum, thus suiting the semiconductor bandgap better. The main issue for that measurements that the signals we want to detect are very small, an effort has been made to enhance the signal-to-noise ratio by using a low noise pre-amplifier, optimizing the power of the lamp and reducing the chopper frequency.
Keywords :
energy gap; low noise amplifiers; preamplifiers; quantum optics; semiconductor devices; solar cells; bifacial silicon solar cells; low noise preamplifier; near-infrared range; quantum efficiency measurement setup; semiconductor bandgap; signal-to-noise ratio; solar cell performance; solar spectrum; Frequency measurement; Lamps; Noise measurement; Noise reduction; Photonic band gap; Photovoltaic cells; Power measurement; Semiconductor device noise; Signal to noise ratio; Silicon;
Conference_Titel :
Electron Devices, 2009. CDE 2009. Spanish Conference on
Conference_Location :
Santiago de Compostela
Print_ISBN :
978-1-4244-2838-0
Electronic_ISBN :
978-1-4244-2839-7
DOI :
10.1109/SCED.2009.4800511
