Wafer-Scale Synthesis and Optical Characterization of InP Nanowire Arrays for Solar Cells
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-09-08
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Mcode
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Language
en
Pages
7
7347-7353
7347-7353
Series
Nano Letters, Volume 21, issue 17
Abstract
Nanowire solar cells have the potential to reach the same efficiencies as the world-record III-V solar cells while using a fraction of the material. For solar energy harvesting, large-area nanowire solar cells have to be processed. In this work, we demonstrate the synthesis of epitaxial InP nanowire arrays on a 2 inch wafer. We define five array areas with different nanowire diameters on the same wafer. We use a photoluminescence mapper to characterize the sample optically and compare it to a homogeneously exposed reference wafer. Both steady-state and time-resolved photoluminescence maps are used to study the material's quality. From a mapping of reflectance spectra, we simultaneously extract the diameter and length of the nanowires over the full wafer. The extracted knowledge of large-scale nanowire synthesis will be crucial for the upscaling of nanowire-based solar cells, and the demonstrated wafer-scale characterization methods will be central for quality control during manufacturing.Description
Funding Information: This work was financially supported by NanoLund, Myfab, the Swedish Research Council, the Swedish Energy Agency, and the Knut and Alice Wallenberg Foundation. Publisher Copyright: © 2021 The Authors. Published by American Chemical Society.
Keywords
EBIC, InP nanowires, MOVPE, PL, reflectance, TRPL
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Citation
Hrachowina, L, Anttu, N & Borgström, M T 2021, ' Wafer-Scale Synthesis and Optical Characterization of InP Nanowire Arrays for Solar Cells ', Nano Letters, vol. 21, no. 17, pp. 7347-7353 . https://doi.org/10.1021/acs.nanolett.1c02542