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Electro - optical simulation of diffraction in solar cells

: Peters, M.; Rüdiger, M.; Bläsi, B.; Platzer, W.

Postprint urn:nbn:de:0011-n-1556780 (1.0 MByte PDF)
MD5 Fingerprint: 40a9a77af131e5b9c51f6fc63dd67f32
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Erstellt am: 9.8.2014

Optics Express 18 (2010), Nr.S4, S.A584-A593
ISSN: 1094-4087
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer ISE ()
Solarthermie und Optik; Silicium-Photovoltaik; Farbstoff; Organische und Neuartige Solarzellen; Angewandte Optik und funktionale Oberflächen; Oberflächen: Konditionierung; Passivierung; Lichteinfang; Photonenmanagement; Mikrostrukturierte Oberflächen

A simulation method is presented and evaluated for simulating two- and three dimensional wave optical effects in crystalline silicon solar cells. Due to a thickness in the 100 µm range, optical properties of these solar cells typically are simulated, primarily through the use of ray-tracing. Recently, diffractive elements such as gratings or photonic crystals have been investigated for their application in crystalline silicon solar cells, making it necessary to consider two- and three dimensional wave optical effects. The presented approach couples a rigorous wave optical simulation to a semiconductor device simulation. In a first step, characteristic parameters, simulated for a reference setup using the electro-optical method and the standard procedure are compared. Occurring differences provide a measure to quantify the errors of the electro-optical method. These errors are below 0.4% relative. In a second step the electro-optical method is used to simulate a crystalline silicon solar cell with a back side diffractive grating. It is found that the grating enhances to short circuit current density jSC of the solar cell by more than 1 mA/cm2.