Role of Polysilicon in Poly-Si/SiOx Passivating Contact Solar Cells

Hyunjung Park; Se Jin Park; Soohyun Bae; Ji Yeon Hyun; Chang Hyun Lee; Seung Hyun Shin; Yoon Mook Kang; Haeseok Lee; Donghwan Kim

doi:10.1109/PVSC.2018.8547754

Role of Polysilicon in Poly-Si/SiO_x Passivating Contact Solar Cells

Hyunjung Park, Se Jin Park, Soohyun Bae, Ji Yeon Hyun, Chang Hyun Lee, Seung Hyun Shin, Yoon Mook Kang, Haeseok Lee, Donghwan Kim

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

2 Citations (Scopus)

Abstract

We investigated the passivation qualities of polySi contacts according to several material and fabrication properties to study their role in improving the efficiency of solar cells. Our observations indicate that P in-diffusion degrades the implied open circuit voltage (iVOC), while gettering increases it. Thick, highly doped poly-Si is needed for high iVOC; however, this increases parasitic absorption. Hence, we suggest a new approach to fabricating highly doped, thin poly-Si contact, with high iVOC, via etch-back. On etching, the iVOC remained at its original value until the poly-Si was fully etched, and we obtained an improved solar cell efficiency of 20.59%.

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	2173-2175
Number of pages	3
ISBN (Electronic)	9781538685297
DOIs	https://doi.org/10.1109/PVSC.2018.8547754
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

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

Keywords

Photovoltaic cells
silicon devices

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.2018.8547754

Cite this

Park, H., Park, S. J., Bae, S., Hyun, J. Y., Lee, C. H., Shin, S. H., Kang, Y. M., Lee, H., & Kim, D. (2018). Role of Polysilicon in Poly-Si/SiO_x Passivating Contact Solar Cells. 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. 2173-2175). [8547754] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8547754

Role of Polysilicon in Poly-Si/SiO_x Passivating Contact Solar Cells. / Park, Hyunjung; Park, Se Jin; Bae, Soohyun 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. 2173-2175 8547754.

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

Park, H, Park, SJ, Bae, S, Hyun, JY, Lee, CH, Shin, SH, Kang, YM, Lee, H & Kim, D 2018, Role of Polysilicon in Poly-Si/SiO_x Passivating Contact Solar Cells. 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., 8547754, Institute of Electrical and Electronics Engineers Inc., pp. 2173-2175, 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 18/6/10. https://doi.org/10.1109/PVSC.2018.8547754

Park H, Park SJ, Bae S, Hyun JY, Lee CH, Shin SH et al. Role of Polysilicon in Poly-Si/SiO_x Passivating Contact Solar Cells. 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. 2173-2175. 8547754 doi: 10.1109/PVSC.2018.8547754

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abstract = "We investigated the passivation qualities of polySi contacts according to several material and fabrication properties to study their role in improving the efficiency of solar cells. Our observations indicate that P in-diffusion degrades the implied open circuit voltage (iVOC), while gettering increases it. Thick, highly doped poly-Si is needed for high iVOC; however, this increases parasitic absorption. Hence, we suggest a new approach to fabricating highly doped, thin poly-Si contact, with high iVOC, via etch-back. On etching, the iVOC remained at its original value until the poly-Si was fully etched, and we obtained an improved solar cell efficiency of 20.59%.",

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AU - Lee, Chang Hyun

AU - Shin, Seung Hyun

AU - Kang, Yoon Mook

AU - Lee, Haeseok

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