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Open Access research which pushes advances in bionanotechnology

Strathprints makes available scholarly Open Access content by researchers in the Strathclyde Institute of Pharmacy & Biomedical Sciences (SIPBS) , based within the Faculty of Science.

SIPBS is a major research centre in Scotland focusing on 'new medicines', 'better medicines' and 'better use of medicines'. This includes the exploration of nanoparticles and nanomedicines within the wider research agenda of bionanotechnology, in which the tools of nanotechnology are applied to solve biological problems. At SIPBS multidisciplinary approaches are also pursued to improve bioscience understanding of novel therapeutic targets with the aim of developing therapeutic interventions and the investigation, development and manufacture of drug substances and products.

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Spectral dependence of amorphous silicon photovoltaic device performance

Infield, D.G. (2004) Spectral dependence of amorphous silicon photovoltaic device performance. International Journal of Ambient Energy, 25 (1). pp. 26-32. ISSN 0143-0750

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Abstract

The short circuit currents of a single, double and triple junction amorphous silicon (a-Si) device are investigated for changes with spectral irradiance variation. Two effects have been previously identified; (i) a primary spectral effect that depends purely on the availability of spectrally-useful irradiance within the absorption band of the device, and (ii) a secondary effect that depends also on the spectral distribution within this band. The average photon energy (APE) has been introduced as a useful parameter for describing spectra. It is a device-independent environmental parameter, which effectively puts a figure to the blueness of a spectrum and readily allows the analysis of spectral effects on photovoltaic devices. Single junction cells have a better performance as light becomes more blue-shifted. Double and triple junction cells have a performance that is maximised when the received spectrum is matched to the absorption profile and that decreases when the radiation is either red- or blue-shifted.