Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2012 - zeszyt 6

Organic photovoltaics - chosen aspects

nr katalogowy: 68612

Preparation of inorganic solar cells usually requires very costly and complicated high temperature vacuum deposition techniques. Furthermore, materials used for fabrication of these cells are expensive and often dangerous for the environment, not to mention the hazardous and toxic substances used during manufacturing process and its by-products [1]. Hence, organic solar cells (OSCs), that can be fabricated from relatively cheap materials, using simple solution coating techniques, i.e. ink-jet printing or spin and dip coating, which do not require high temperatures nor the usage of hazardous substances, seem to be a promising alternative for the inorganic photovoltaics. Moreover, the number of organic materials is much greater than the number of inorganic ones, so the potential of applications of organic materials in photovoltaics is greater as well. However, relatively low efficiency and fast degradation of organic solar cells [2, 3] are serious drawbacks that hinder commercialization of organic photovoltaic diodes. Designing organic solar cells with higher energy conversion efficiency and stability is impossible without extensive knowledge on all physical and chemical processes taking place inside organic photovoltaic devices in the dark and under illumination. Even though there are many experimental works showing the performance of OSCs, theoretical model for the photovoltaic effect taking place in these devices has not been developed yet. Significant differences in structure of organic and inorganic materials result in different types of interactions between molecules. Thus, even though the mechanisms of photovoltaic effect in inorganic systems are well known and described in literature, processes that affect photovoltaic phenomenon in organic systems still need further understanding. Thus, research we run in our laboratory is focused on analysis of the above mentioned processes. Photovoltaic phenomenon in organic systems [...]

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2012-6

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