Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells

Gianluca Limodio; Davide Bartesaghi; Maurice Hietkamp; Devika Rajagopal; Sajith Nawaratne; Edward Hamers; Arno Smets

doi:10.1109/PVSC45281.2020.9300722

Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells

Gianluca Limodio, Davide Bartesaghi, Maurice Hietkamp, Devika Rajagopal, Sajith Nawaratne, Edward Hamers, Arno Smets

Photovoltaic Materials and Devices

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

In this work we focus on texturing Al substrate in order to employ the modulated surface texturing approach for thin-film, flexible, micromorph solar cells. We deployed two different methods to induce micro-craters in Al foil, i) bare Al etching by KOH and ii) AZO sacrificial layer etched in KOH. After modelling the etching kinetics of KOH on Al, we characterized the 2D correlation length and rms roughness of these samples and find the optimal aspect ratio of 12% to deposit high-quality 3 µm-thick nc-Si. Finally, excellent angular scattering properties have been measured for both employed methods.

Original language	English
Title of host publication	2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020
Publisher	IEEE
Pages	453-456
Number of pages	4
ISBN (Electronic)	9781728161150
DOIs	https://doi.org/10.1109/PVSC45281.2020.9300722
Publication status	Published - 2020
Event	47th IEEE Photovoltaic Specialists Conference, PVSC 2020 - Calgary, Canada Duration: 15 Jun 2020 → 21 Aug 2020

Publication series

Name	Conference Record of the IEEE Photovoltaic Specialists Conference
Volume	2020-June
ISSN (Print)	0160-8371

Conference

Conference	47th IEEE Photovoltaic Specialists Conference, PVSC 2020
Country/Territory	Canada
City	Calgary
Period	15/06/20 → 21/08/20

Keywords

Al substrate
etching
flexible
thin-film solar cells

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10.1109/PVSC45281.2020.9300722

IEEE-PVSC - manuscript -Accepted author manuscript, 391 KB

Cite this

Limodio, G., Bartesaghi, D., Hietkamp, M., Rajagopal, D., Nawaratne, S., Hamers, E., & Smets, A. (2020). Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells. In 2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020 (pp. 453-456). Article 9300722 (Conference Record of the IEEE Photovoltaic Specialists Conference; Vol. 2020-June). IEEE. https://doi.org/10.1109/PVSC45281.2020.9300722

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title = "Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells",

abstract = "In this work we focus on texturing Al substrate in order to employ the modulated surface texturing approach for thin-film, flexible, micromorph solar cells. We deployed two different methods to induce micro-craters in Al foil, i) bare Al etching by KOH and ii) AZO sacrificial layer etched in KOH. After modelling the etching kinetics of KOH on Al, we characterized the 2D correlation length and rms roughness of these samples and find the optimal aspect ratio of 12% to deposit high-quality 3 µm-thick nc-Si. Finally, excellent angular scattering properties have been measured for both employed methods.",

keywords = "Al substrate, etching, flexible, thin-film solar cells",

author = "Gianluca Limodio and Davide Bartesaghi and Maurice Hietkamp and Devika Rajagopal and Sajith Nawaratne and Edward Hamers and Arno Smets",

year = "2020",

doi = "10.1109/PVSC45281.2020.9300722",

language = "English",

series = "Conference Record of the IEEE Photovoltaic Specialists Conference",

publisher = "IEEE",

pages = "453--456",

booktitle = "2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020",

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note = "47th IEEE Photovoltaic Specialists Conference, PVSC 2020 ; Conference date: 15-06-2020 Through 21-08-2020",

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Limodio, G, Bartesaghi, D, Hietkamp, M, Rajagopal, D, Nawaratne, S, Hamers, E & Smets, A 2020, Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells. in 2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020., 9300722, Conference Record of the IEEE Photovoltaic Specialists Conference, vol. 2020-June, IEEE, pp. 453-456, 47th IEEE Photovoltaic Specialists Conference, PVSC 2020, Calgary, Canada, 15/06/20. https://doi.org/10.1109/PVSC45281.2020.9300722

Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells. / Limodio, Gianluca; Bartesaghi, Davide; Hietkamp, Maurice et al.
2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020. IEEE, 2020. p. 453-456 9300722 (Conference Record of the IEEE Photovoltaic Specialists Conference; Vol. 2020-June).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells

AU - Limodio, Gianluca

AU - Bartesaghi, Davide

AU - Hietkamp, Maurice

AU - Rajagopal, Devika

AU - Nawaratne, Sajith

AU - Hamers, Edward

AU - Smets, Arno

PY - 2020

Y1 - 2020

N2 - In this work we focus on texturing Al substrate in order to employ the modulated surface texturing approach for thin-film, flexible, micromorph solar cells. We deployed two different methods to induce micro-craters in Al foil, i) bare Al etching by KOH and ii) AZO sacrificial layer etched in KOH. After modelling the etching kinetics of KOH on Al, we characterized the 2D correlation length and rms roughness of these samples and find the optimal aspect ratio of 12% to deposit high-quality 3 µm-thick nc-Si. Finally, excellent angular scattering properties have been measured for both employed methods.

AB - In this work we focus on texturing Al substrate in order to employ the modulated surface texturing approach for thin-film, flexible, micromorph solar cells. We deployed two different methods to induce micro-craters in Al foil, i) bare Al etching by KOH and ii) AZO sacrificial layer etched in KOH. After modelling the etching kinetics of KOH on Al, we characterized the 2D correlation length and rms roughness of these samples and find the optimal aspect ratio of 12% to deposit high-quality 3 µm-thick nc-Si. Finally, excellent angular scattering properties have been measured for both employed methods.

KW - Al substrate

KW - etching

KW - flexible

KW - thin-film solar cells

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BT - 2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020

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Limodio G, Bartesaghi D, Hietkamp M, Rajagopal D, Nawaratne S, Hamers E et al. Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells. In 2020 47th IEEE Photovoltaic Specialists Conference, PVSC 2020. IEEE. 2020. p. 453-456. 9300722. (Conference Record of the IEEE Photovoltaic Specialists Conference). doi: 10.1109/PVSC45281.2020.9300722

Modulated surface texturing of temporary Al foils substrates for high-efficiency thin-film, flexible solar cells

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