An extremely simple on-line quantum yield measurement tool was developed, that permits to measure the photocurrent spectra of solar cells under harsh measurement conditions without the need of optical windows or moving parts. The small photocurrent, induced by the sequential illumination by a series of LEDs with different emission wavelengths, distributed within the responsivity range of the tested solar cell, is converted to a proportional frequency and then monitored using the audio-card of a personal computer and an appropriate Labview-based Software. Subsequently the quantum yield measurements were performed in-situ during the irradiation of a conventional crystalline Silicon solar cell with 1.7 MeV protons in the spectral range between 400 nm and 880 nm. In this case the complete photocurrent spectrum can been monitored continuously with good temporal resolution.
File in questo prodotto:
Non ci sono file associati a questo prodotto.