1 - 8 of 8 Chapters
[Thin-film photovoltaics is briefly introduced by outlining different technologies and stating their record efficiencies. The main loss mechanisms, design procedure and important challenges in up-scaling of these devices are presented. A need for spatially resolved characterisation in research...
[The theoretical background on photovoltaic (PV) device operation is reviewed. The principle of light absorption in direct and indirect semiconductors, and the use of a p–n and p–i–n devices are explained. Basic performance parameters and one-diode model parameters of solar cells are introduced...
[Techniques for spatial characterisation are presented: optical imaging, light beam induced current, electro- and photoluminescence, and thermography. An emphasis is placed on luminescence techniques, where image acquisition and processing are explained in detail with the aim of producing a true...
[SPICE simulations are introduced by pointing out their benefits and describing the basic simulation principle. A 3-layer 2-dimensional SPICE model of a PV device is designed in three levels: microcell, cell and module level. The purpose and design of each level is explained and simplification...
[In this chapter CdTe solar cells are presented as a typical thin-film photovoltaic technology. In the first part we describe their structure and fabrication together with their operation as required for understanding spatial inhomogeneities. A SPICE model of the cell is designed and described....
[Dye-sensitised solar cells are presented as an example of third generation photovoltaic devices. Their structure and fabrication are described as required for understanding spatial inhomogeneities. Because light interaction takes place via dye molecules, the operation of dye-sensitised solar...
[Electroluminescence imaging is extended to the photovoltaic (PV) module level. Qualitative characterisation of different types of commercially available PV devices is made based on electroluminescence measurements and photographic images. Examples include a conventional crystalline silicon PV...
[The last chapter summarises the book by pointing out key facts about spatial characterisation techniques and discussing possible future trends.]
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