Reflection Measurements to Reveal the Absorption in Nanowire Arrays

The absorption of light is at the core of photovoltaic applications. For many nanostructure-based devices, an assessment of the absorption in the nanostructures is complicated by a thick, opaque substrate that prohibits transmission measurements. Here, we show how a single reflection measurement can be used for approximating the amount of light absorbed in vertical semiconductor nanowire arrays.

Nicklas Anttu, Azhar Iqbal, Magnus Heurlin, Lars Samuelson, Magnus T. Borgström, Mats-Erik Pistol, and Arkady Yartsev, “Reflection measurements to reveal the absorption in nanowire arrays,” Opt. Lett. 38, 1449-1451 (2013)

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