Berlin 2012 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 72: Poster Session: Si-based Photovoltaics / Inorganic Photovoltaics / Structure and Transport in Organic Photovoltaics / Organic Semiconductors

HL 72.6: Poster

Wednesday, March 28, 2012, 16:00–19:00, Poster D

Novel multifunctional emitters for heterojunction solar cells — •Henriette Gatz, Oumkelthoum Mint Moustapha, Dieuwertje Schrijvers, Bart Sasbrink, Arjen de Waal, Jatin Rath, and Ruud Schropp — Nanophotonics - Physics of Devices, Debye Institute for Nanomaterials Science, Utrecht University, The Netherlands

Silicon heterojunctions are a promising approach to obtain high efficiency solar cells at low manufacturing costs. Their main parts consist of a silicon wafer, a thin emitter layer, and a Transparent Conductive Oxide (TCO) layer. The purpose of the TCO layer is to act as a perfect window for the incoming light while providing sufficient conductivity to transport the current to the front contact of the cell. The commonly used TCOs have several disadvantages, such as a narrow range of refractive index and work function. This does not allow for tuning in order to optimize the collection and transport of carriers.

To simplify the heterojunction silicon cell structure and its fabrication process, we aim to develop a novel layer that can be made with a single deposition technique, combining the functions of the thin emitter layer and the TCO layer, including the anti-reflection function.