Due to the availability and low cost of the elements, the semiconductor systems Cu-Sb-Bi-S(e) and Cu-Zn-Sn-S(e) are being studied as sustainable alternatives to the expensive CuIn(Ga)S(e)2 for thin film photovoltaic applications. The samples have been produced by a range of synthetic techniques such as one-step or multi-step electrodepositions from aqueous and non aqueous solutions and other electroplating/evaporation routes. The new materials have been characterized through structural, electrical and photoelectrochemical techniques in order to establish their suitability as absorber layer materials for solar energy conversion. Photoactive compounds have been synthesised, with band-gap energy matching the Shockley-Queisser requirements for the efficient harvesting of solar spectrum. Further studies are being carried out in order to improve the photon to current efficiency of these materials.
Electrochemical routes to PV: CuSbS2 and CuSbSe2 absorber films
Diego Colombara;
2010-01-01
Abstract
Due to the availability and low cost of the elements, the semiconductor systems Cu-Sb-Bi-S(e) and Cu-Zn-Sn-S(e) are being studied as sustainable alternatives to the expensive CuIn(Ga)S(e)2 for thin film photovoltaic applications. The samples have been produced by a range of synthetic techniques such as one-step or multi-step electrodepositions from aqueous and non aqueous solutions and other electroplating/evaporation routes. The new materials have been characterized through structural, electrical and photoelectrochemical techniques in order to establish their suitability as absorber layer materials for solar energy conversion. Photoactive compounds have been synthesised, with band-gap energy matching the Shockley-Queisser requirements for the efficient harvesting of solar spectrum. Further studies are being carried out in order to improve the photon to current efficiency of these materials.
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