Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells

Timo Aho; Mircea Guina; Farid Elsehrawy; Federica Cappelluti; Marianna Raappana; Antti Tukiainen; A. B. M. Khairul Alam; Ismo Vartiainen; Markku Kuittinen; Tapio Niemi

doi:10.1109/PVSC.2018.8547661

Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells

Timo Aho, Mircea Guina, Farid Elsehrawy, Federica Cappelluti, Marianna Raappana, Antti Tukiainen, A. B. M. Khairul Alam, Ismo Vartiainen, Markku Kuittinen, Tapio Niemi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

23 Downloads (Pure)

Abstract

We report on the fabrication, characterization and simulation of diffraction gratings for back contact reflectors in III-V solar cells. The gratings are designed for thin-film solar cells incorporating absorbers with bandgap slightly lower than GaAs, such as InAs/GaAs quantum dot or GaInNAs solar cells. Metal/polymer back reflectors with a blazed grating or a pyramid grating were fabricated by nanoimprint lithography. The gratings are compared in terms of diffraction ability, which is the feature responsible for increasing the absorption. The pyramid grating showed higher diffraction of light compared to the blazed grating. The diffraction efficiency measurements were in agreement with the numerical simulations. The model validation enables tailoring the properties of the reflectors for other type of solar cells by adjusting the optimal dimensions of the gratings for different wavelengths.

Original language	English
Title of host publication	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)
Subtitle of host publication	A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC
Publisher	IEEE
Pages	2847-2851
Number of pages	5
ISBN (Electronic)	978-1-5386-8529-7
DOIs	https://doi.org/10.1109/PVSC.2018.8547661
Publication status	Published - Nov 2018
Publication type	A4 Article in conference proceedings
Event	World Conference on Photovoltaic Energy Conversion - Duration: 5 Dec 1994 → …

Publication series

Name	CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE
Publisher	IEEE
ISSN (Print)	0160-8371

Conference

Conference	World Conference on Photovoltaic Energy Conversion
Period	5/12/94 → …

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/PVSC.2018.8547661

WCPEC-7 Manuscript_Timo AhoAccepted author manuscript, 1.7 MB

http://urn.fi/URN:NBN:fi:tuni-201910213977

Cite this

Aho, T., Guina, M., Elsehrawy, F., Cappelluti, F., Raappana, M., Tukiainen, A., Khairul Alam, A. B. M., Vartiainen, I., Kuittinen, M., & Niemi, T. (2018). Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC (pp. 2847-2851). (CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE). IEEE. https://doi.org/10.1109/PVSC.2018.8547661

Aho, Timo ; Guina, Mircea ; Elsehrawy, Farid et al. / Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC. IEEE, 2018. pp. 2847-2851 (CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE).

@inproceedings{43e5efd2eaa14c9897571dc8e66829f5,

title = "Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells",

abstract = "We report on the fabrication, characterization and simulation of diffraction gratings for back contact reflectors in III-V solar cells. The gratings are designed for thin-film solar cells incorporating absorbers with bandgap slightly lower than GaAs, such as InAs/GaAs quantum dot or GaInNAs solar cells. Metal/polymer back reflectors with a blazed grating or a pyramid grating were fabricated by nanoimprint lithography. The gratings are compared in terms of diffraction ability, which is the feature responsible for increasing the absorption. The pyramid grating showed higher diffraction of light compared to the blazed grating. The diffraction efficiency measurements were in agreement with the numerical simulations. The model validation enables tailoring the properties of the reflectors for other type of solar cells by adjusting the optimal dimensions of the gratings for different wavelengths.",

author = "Timo Aho and Mircea Guina and Farid Elsehrawy and Federica Cappelluti and Marianna Raappana and Antti Tukiainen and {Khairul Alam}, {A. B. M.} and Ismo Vartiainen and Markku Kuittinen and Tapio Niemi",

year = "2018",

month = nov,

doi = "10.1109/PVSC.2018.8547661",

language = "English",

series = "CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE",

publisher = "IEEE",

pages = "2847--2851",

booktitle = "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)",

note = "World Conference on Photovoltaic Energy Conversion ; Conference date: 05-12-1994",

}

Aho, T, Guina, M, Elsehrawy, F, Cappelluti, F, Raappana, M , Tukiainen, A, Khairul Alam, ABM, Vartiainen, I, Kuittinen, M & Niemi, T 2018, Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells. in 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC. CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE, IEEE, pp. 2847-2851, World Conference on Photovoltaic Energy Conversion, 5/12/94. https://doi.org/10.1109/PVSC.2018.8547661

Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells. / Aho, Timo; Guina, Mircea; Elsehrawy, Farid et al.
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC. IEEE, 2018. p. 2847-2851 (CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells

AU - Aho, Timo

AU - Guina, Mircea

AU - Elsehrawy, Farid

AU - Cappelluti, Federica

AU - Raappana, Marianna

AU - Tukiainen, Antti

AU - Khairul Alam, A. B. M.

AU - Vartiainen, Ismo

AU - Kuittinen, Markku

AU - Niemi, Tapio

PY - 2018/11

Y1 - 2018/11

N2 - We report on the fabrication, characterization and simulation of diffraction gratings for back contact reflectors in III-V solar cells. The gratings are designed for thin-film solar cells incorporating absorbers with bandgap slightly lower than GaAs, such as InAs/GaAs quantum dot or GaInNAs solar cells. Metal/polymer back reflectors with a blazed grating or a pyramid grating were fabricated by nanoimprint lithography. The gratings are compared in terms of diffraction ability, which is the feature responsible for increasing the absorption. The pyramid grating showed higher diffraction of light compared to the blazed grating. The diffraction efficiency measurements were in agreement with the numerical simulations. The model validation enables tailoring the properties of the reflectors for other type of solar cells by adjusting the optimal dimensions of the gratings for different wavelengths.

AB - We report on the fabrication, characterization and simulation of diffraction gratings for back contact reflectors in III-V solar cells. The gratings are designed for thin-film solar cells incorporating absorbers with bandgap slightly lower than GaAs, such as InAs/GaAs quantum dot or GaInNAs solar cells. Metal/polymer back reflectors with a blazed grating or a pyramid grating were fabricated by nanoimprint lithography. The gratings are compared in terms of diffraction ability, which is the feature responsible for increasing the absorption. The pyramid grating showed higher diffraction of light compared to the blazed grating. The diffraction efficiency measurements were in agreement with the numerical simulations. The model validation enables tailoring the properties of the reflectors for other type of solar cells by adjusting the optimal dimensions of the gratings for different wavelengths.

U2 - 10.1109/PVSC.2018.8547661

DO - 10.1109/PVSC.2018.8547661

M3 - Conference contribution

T3 - CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE

SP - 2847

EP - 2851

BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)

PB - IEEE

T2 - World Conference on Photovoltaic Energy Conversion

Y2 - 5 December 1994

ER -

Aho T, Guina M, Elsehrawy F, Cappelluti F, Raappana M , Tukiainen A et al. Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC. IEEE. 2018. p. 2847-2851. (CONFERENCE RECORD OF THE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE). doi: 10.1109/PVSC.2018.8547661

Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells

Abstract

Publication series

Conference

Publication forum classification

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this