Imperial College London
Alternate

Dr N.J. (Ned) Ekins-Daukes

Faculty of Natural Sciences, Department of Physics

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Contact

 

+44 (0)20 7594 6675n.ekins-daukes Website

 
 
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Location

 

H1002Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Pearce:2018:10.1109/PVSC.2018.8548090,
author = {Pearce, P and Mellor, A and Ekins-Daukes, N},
doi = {10.1109/PVSC.2018.8548090},
pages = {2918--2923},
publisher = {IEEE},
title = {Quantifying parasitic losses from metal scattering structures in solar cells: How uncertainty in optical constants affects simulation results},
url = {http://dx.doi.org/10.1109/PVSC.2018.8548090},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - The optical constants of many metals commonly used in solar cells, e.g. as contacts or for light trapping structures, are not documented consistently in the literature, with different sources giving different values. In the case of metallic structures designed to improve absorption in a solar cell junction, the use of data from different sources can give strongly varying results for the effectiveness of nanophotonic light-trapping structures. The trade-off between diffraction into more oblique orders in the junction, enhancing absorption in the photovoltaic material, and the number of photons absorbed parasitically in the metal means small differences in the optical constants can lead to different very conclusions about the EQE and J SC . This work documents the different optical constants for silver, aluminium, gold and titanium from several sources, the effect this has on plasmon quality factors, and quantifies the effect on modelling outcomes by considering the optimization of a test structure using a grid of metal nanodisks on the front surface of a thinned-down GaAs cell. Finally, we consider the effect for a structure previously predicted to give a very high J SC for a solar cell with an ultra-thin GaAs layer.
AU  - Pearce,P
AU  - Mellor,A
AU  - Ekins-Daukes,N
DO  - 10.1109/PVSC.2018.8548090
EP  - 2923
PB  - IEEE
PY  - 2018///
SN  - 0160-8371
SP  - 2918
TI  - Quantifying parasitic losses from metal scattering structures in solar cells: How uncertainty in optical constants affects simulation results
UR  - http://dx.doi.org/10.1109/PVSC.2018.8548090
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000469200402216&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/71308
ER  -
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