Category: Organic Photovoltaics


Organic materials are generally considered to offer a range of new possibilities in terms of material use and device concepts. Although it is difficult to make firm statements about the different technologies in this category, there is every reason to believe that they may be produced at (very) low cost. Compared to organic/polymeric solar cells, […]

Long Term Stability Tests on High Power nc-DSC

In order to predict outdoor module lifetimes, appropriate accelerated ageing tests are needed to make useful extrapolations to realistic outdoor conditions and to identify possible degradation mechanisms. A systematic investigation of intrinsic chemical stability was carried out on devices specially designed for high power applications [7]. For this purpose, accelerated ageing test procedures were developed […]

Long Term Stability

Besides the establishment of a reliable processing technology for nc-DSC, the long term stability of the cells/modules has to be guaranteed. The overall stability of the cell is controlled by the intrinsic and extrinsic stability. The intrinsic stability is related to irreversible (photo-)electrochemical degrada­tion of the dye and/or components of the electrolyte solution. Evaporation of […]

Sealing Aspects

The presence of a liquid electrolyte requires hermetic sealing of the module in order to prevent evaporation of the solvent as well as intrusion of water and oxygen. The sealing materials have to meet several requirements: • chemical stability in contact with the liquid electrolyte, • excellent barrier properties in order to minimise solvent losses […]