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2017 | OriginalPaper | Chapter

10. Novel Thin-Film Photovoltaics—Status and Perspectives

Authors : Benjamin Oesen, Sascha Ullbrich, Johannes Widmer, Karl Leo

Published in: Green Photonics and Electronics

Publisher: Springer International Publishing

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Abstract

In this chapter, we discuss recent advances in novel thin-film photovoltaic devices which allows novel and low-cost applications of photovoltaics. In particular, we discuss organic and perovskite photovoltaics. At the end, we compare the outdoor harvesting efficiency of these novel systems.

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previous chapter Low-Cost Harvesting of Solar Energy: The Future of Global Photovoltaics

Solar spectrum for standardized testing and characterization of solar cells.

The active layer consists of a sequence of at least three absorber materials, whereby adjacent materials form either a planar or bulk heterjunction.

As a secondary effect, another partial reflection at the transparent surface will furthermore reflect part of the remaining intensity back into the device, creating an effective cavity between front surface and back contact [15].

This concept can be extended beyond two cells, however, the further discussion is limited to two sub-cells where it covers all relevant issues.

The MPP denotes the operation voltage, at which the output power, i.e. the product of the output voltage and the output current, is highest. It is found at a voltage slightly below the open-circuit voltage, with its actual position depending on the specific device and its operating conditions.

In this simplified description, reflection from the back contact is omitted. In a more detailed view, again, the full interference pattern needs to be taken into account, as discussed above for a single junction cell.

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Title: Novel Thin-Film Photovoltaics—Status and Perspectives
Authors: Benjamin Oesen
Sascha Ullbrich
Johannes Widmer
Karl Leo
Publisher: Springer International Publishing
Book: Green Photonics and Electronics
Print ISBN: 978-3-319-67001-0

Electronic ISBN: 978-3-319-67002-7

Copyright Year: 2017
DOI: https://doi.org/10.1007/978-3-319-67002-7_10