Witzigmann B (2017)
Publication Type: Book chapter / Article in edited volumes
Publication year: 2017
Publisher: CRC Press
Edited Volumes: Handbook of Optoelectronic Device Modeling and Simulation: Lasers, Modulators, Photodetectors, Solar Cells, and Numerical Methods
Book Volume: 2
Pages Range: 475-495
ISBN: 9781315152318
Nanowire arrays show unique optical and electronic features for photovoltaic applications. It has been demonstrated that they exhibit intrinsic optical antireflection properties [1, 2]. Moreover, they also can act as optical microconcentrators [3] that focus light to an active region. Nanowires have a large aspect ratio, improving the electronic properties by combining a long optical absorption path along the wire axis and a short lateral carrier extraction [4]. Short carrier extraction paths are beneficial for the carrier collection efficiency. These mechanisms are illustrated in Figure 42.1. On the left, a conventional bulk solar cell collects light in the vertical direction, and the photogenerated carriers move to the respective contacts causing the photo current. A nanostructured solar cell (Figure 42.1a) can act as an optical concentrator in order to focus the incoming light to a small area. Moreover, the carrier extraction path length to the contacts is reduced, which minimizes the probability of carrier loss by unwanted recombination.
APA:
Witzigmann, B. (2017). Nanowire solar cells: Electro-optical performance. In Joachim Piprek (Eds.), Handbook of Optoelectronic Device Modeling and Simulation: Lasers, Modulators, Photodetectors, Solar Cells, and Numerical Methods. (pp. 475-495). CRC Press.
MLA:
Witzigmann, Bernd. "Nanowire solar cells: Electro-optical performance." Handbook of Optoelectronic Device Modeling and Simulation: Lasers, Modulators, Photodetectors, Solar Cells, and Numerical Methods. Ed. Joachim Piprek, CRC Press, 2017. 475-495.
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