Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell

Hyunju Lee; Inseol Song; Sang Won Lee; Soo Hyun Bae; Ji Yeon Hyun; Yoonmook Kang; Haeseok Lee; Donghwan Kim; Atsushi Ogura; Yoshio Ohshita

doi:10.1109/PVSC.2018.8547592

Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell

Hyunju Lee, Inseol Song, Sang Won Lee, Soo Hyun Bae, Ji Yeon Hyun, Yoonmook Kang, Haeseok Lee, Donghwan Kim, Atsushi Ogura, Yoshio Ohshita

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We have investigated the effects of chemical rounding on the performance of bifacial n-PERT Si cells with a random-pyramid textured p ⁺ -emitter. From experimental results, we found that solar-weighted reflectanceR _SW of pyramid textured p ⁺ -emitters passivated with an AlOx/SiNx:H stack increases and short circuit current densityJ _sc of bifacial n-PERT Si cells with an AlOx/SiNx:H stack-passivated textured p ⁺ -emitter consequently decreases as a function of chemical rounding time. However, the loss inJ _sc is fully offset by the increased fill factor FF, and the efficiency of the 200-sec-rounded cells is consequently enhanced, compared to the non-rounded cells. In addition, the deposition of an indium tin oxide layer on the non-rounded and rounded p+- emitters passivated with an AlOx/SiNx:H stack can reduce reflectance largely in the near-infrared region. Based on the experimental results, although we would need further studies, it could be expected that cell efficiency of a bifacial n-PERT Si bottom cell and its monolithic tandem cell with a perovskite top cell would be improved without additional complicated and costly processes if chemical rounding and boron doping processes are properly optimized.

Original language	English
Title of host publication	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2039-2044
Number of pages	6
ISBN (Electronic)	9781538685297
DOIs	https://doi.org/10.1109/PVSC.2018.8547592
Publication status	Published - 2018 Nov 26
Event	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: 2018 Jun 10 → 2018 Jun 15

Publication series

Name	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Other

Other	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/Territory	United States
City	Waikoloa Village
Period	18/6/10 → 18/6/15

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

AlOx passivation
Chemical rounding
bifacial n-PERT Si solar cell
perovskite/silicon tandem cell
pyramid textured p+-emitter

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/PVSC.2018.8547592

Cite this

Lee, H., Song, I., Lee, S. W., Bae, S. H., Hyun, J. Y., Kang, Y., Lee, H., Kim, D., Ogura, A., & Ohshita, Y. (2018). Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 2039-2044). Article 8547592 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8547592

Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell. / Lee, Hyunju; Song, Inseol; Lee, Sang Won et al.
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. p. 2039-2044 8547592 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, H, Song, I, Lee, SW, Bae, SH, Hyun, JY, Kang, Y, Lee, H , Kim, D, Ogura, A & Ohshita, Y 2018, Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell. in 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC., 8547592, 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC, Institute of Electrical and Electronics Engineers Inc., pp. 2039-2044, 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 18/6/10. https://doi.org/10.1109/PVSC.2018.8547592

Lee H, Song I, Lee SW, Bae SH, Hyun JY, Kang Y et al. Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc. 2018. p. 2039-2044. 8547592. (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC). doi: 10.1109/PVSC.2018.8547592

Lee, Hyunju ; Song, Inseol ; Lee, Sang Won et al. / Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 2039-2044 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

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abstract = " We have investigated the effects of chemical rounding on the performance of bifacial n-PERT Si cells with a random-pyramid textured p + -emitter. From experimental results, we found that solar-weighted reflectanceR SW of pyramid textured p + -emitters passivated with an AlOx/SiNx:H stack increases and short circuit current densityJ sc of bifacial n-PERT Si cells with an AlOx/SiNx:H stack-passivated textured p + -emitter consequently decreases as a function of chemical rounding time. However, the loss inJ sc is fully offset by the increased fill factor FF, and the efficiency of the 200-sec-rounded cells is consequently enhanced, compared to the non-rounded cells. In addition, the deposition of an indium tin oxide layer on the non-rounded and rounded p+- emitters passivated with an AlOx/SiNx:H stack can reduce reflectance largely in the near-infrared region. Based on the experimental results, although we would need further studies, it could be expected that cell efficiency of a bifacial n-PERT Si bottom cell and its monolithic tandem cell with a perovskite top cell would be improved without additional complicated and costly processes if chemical rounding and boron doping processes are properly optimized.",

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AU - Song, Inseol

AU - Lee, Sang Won

AU - Bae, Soo Hyun

AU - Hyun, Ji Yeon

AU - Kang, Yoonmook

AU - Lee, Haeseok

AU - Kim, Donghwan

AU - Ogura, Atsushi

AU - Ohshita, Yoshio

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AB - We have investigated the effects of chemical rounding on the performance of bifacial n-PERT Si cells with a random-pyramid textured p + -emitter. From experimental results, we found that solar-weighted reflectanceR SW of pyramid textured p + -emitters passivated with an AlOx/SiNx:H stack increases and short circuit current densityJ sc of bifacial n-PERT Si cells with an AlOx/SiNx:H stack-passivated textured p + -emitter consequently decreases as a function of chemical rounding time. However, the loss inJ sc is fully offset by the increased fill factor FF, and the efficiency of the 200-sec-rounded cells is consequently enhanced, compared to the non-rounded cells. In addition, the deposition of an indium tin oxide layer on the non-rounded and rounded p+- emitters passivated with an AlOx/SiNx:H stack can reduce reflectance largely in the near-infrared region. Based on the experimental results, although we would need further studies, it could be expected that cell efficiency of a bifacial n-PERT Si bottom cell and its monolithic tandem cell with a perovskite top cell would be improved without additional complicated and costly processes if chemical rounding and boron doping processes are properly optimized.

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Y2 - 10 June 2018 through 15 June 2018

ER -

Potential of Chemical Rounding for the Performance Enhancement of a Monolithic Perovskite/Bifacial N-PERT Si Tandem Cell

Abstract

Publication series

Other

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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