Analysis of contact reaction phenomenon between aluminum-silver and p+ diffused layer for n-type c-Si solar cell applications

Cheolmin Park; Sungyoon Chung; Nagarajan Balaji; Shihyun Ahn; Sunhwa Lee; Jinjoo Park; Junsin Yi

doi:10.3390/en13174537

Analysis of contact reaction phenomenon between aluminum-silver and p+ diffused layer for n-type c-Si solar cell applications

Cheolmin Park
, Sungyoon Chung
, Nagarajan Balaji
, Shihyun Ahn
, Sunhwa Lee
, Jinjoo Park
, Junsin Yi

Department of Electronic and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In this study, the contact mechanism between Ag-Al and Si and the change in contact resistance (Rc) were analyzed by varying the firing profile. The front electrode of an n-type c-Si solar cell was formed through a screen-printing process using Ag-Al paste. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. Rc value of 6.98 mΩ-cm⁻² was obtained for an optimal fast-firing profile with 865 ^◦C peak temperature and 110 inches per min belt speed. The contact phenomenon and the influence of impurities between the front-electrode-Si interface and firing conditions were analyzed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The EDS analysis revealed that the peak firing temperature at 865 ^◦C exhibited a low atomic weight percentage of Al (0.72 and 0.36%) because Al was involved in the formation of alloy of Si with the front electrode. Based on the optimal results, a solar cell with a conversion efficiency of 19.46% was obtained.

Original language	English
Article number	4537
Journal	Energies
Volume	13
Issue number	17
DOIs	https://doi.org/10.3390/en13174537
State	Published - Sep 2020

Keywords

Ag/Al paste
Contact formation
Metallization
N-type bifacial solar cells
P+ emitter

UN SDGs

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

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@article{e3781aebb6454bac9873cf486800f10d,

title = "Analysis of contact reaction phenomenon between aluminum-silver and p+ diffused layer for n-type c-Si solar cell applications",

abstract = "In this study, the contact mechanism between Ag-Al and Si and the change in contact resistance (Rc) were analyzed by varying the firing profile. The front electrode of an n-type c-Si solar cell was formed through a screen-printing process using Ag-Al paste. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. Rc value of 6.98 mΩ-cm−2 was obtained for an optimal fast-firing profile with 865 ◦C peak temperature and 110 inches per min belt speed. The contact phenomenon and the influence of impurities between the front-electrode-Si interface and firing conditions were analyzed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The EDS analysis revealed that the peak firing temperature at 865 ◦C exhibited a low atomic weight percentage of Al (0.72 and 0.36\%) because Al was involved in the formation of alloy of Si with the front electrode. Based on the optimal results, a solar cell with a conversion efficiency of 19.46\% was obtained.",

keywords = "Ag/Al paste, Contact formation, Metallization, N-type bifacial solar cells, P+ emitter",

author = "Cheolmin Park and Sungyoon Chung and Nagarajan Balaji and Shihyun Ahn and Sunhwa Lee and Jinjoo Park and Junsin Yi",

note = "Publisher Copyright: {\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).",

year = "2020",

month = sep,

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T1 - Analysis of contact reaction phenomenon between aluminum-silver and p+ diffused layer for n-type c-Si solar cell applications

AU - Park, Cheolmin

AU - Chung, Sungyoon

AU - Balaji, Nagarajan

AU - Ahn, Shihyun

AU - Lee, Sunhwa

AU - Park, Jinjoo

AU - Yi, Junsin

N1 - Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PY - 2020/9

Y1 - 2020/9

N2 - In this study, the contact mechanism between Ag-Al and Si and the change in contact resistance (Rc) were analyzed by varying the firing profile. The front electrode of an n-type c-Si solar cell was formed through a screen-printing process using Ag-Al paste. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. Rc value of 6.98 mΩ-cm−2 was obtained for an optimal fast-firing profile with 865 ◦C peak temperature and 110 inches per min belt speed. The contact phenomenon and the influence of impurities between the front-electrode-Si interface and firing conditions were analyzed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The EDS analysis revealed that the peak firing temperature at 865 ◦C exhibited a low atomic weight percentage of Al (0.72 and 0.36%) because Al was involved in the formation of alloy of Si with the front electrode. Based on the optimal results, a solar cell with a conversion efficiency of 19.46% was obtained.

AB - In this study, the contact mechanism between Ag-Al and Si and the change in contact resistance (Rc) were analyzed by varying the firing profile. The front electrode of an n-type c-Si solar cell was formed through a screen-printing process using Ag-Al paste. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. Rc value of 6.98 mΩ-cm−2 was obtained for an optimal fast-firing profile with 865 ◦C peak temperature and 110 inches per min belt speed. The contact phenomenon and the influence of impurities between the front-electrode-Si interface and firing conditions were analyzed through scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The EDS analysis revealed that the peak firing temperature at 865 ◦C exhibited a low atomic weight percentage of Al (0.72 and 0.36%) because Al was involved in the formation of alloy of Si with the front electrode. Based on the optimal results, a solar cell with a conversion efficiency of 19.46% was obtained.

KW - Ag/Al paste

KW - Contact formation

KW - Metallization

KW - N-type bifacial solar cells

KW - P+ emitter

UR - https://www.scopus.com/pages/publications/85090897910

U2 - 10.3390/en13174537

DO - 10.3390/en13174537

M3 - Article

AN - SCOPUS:85090897910

SN - 1996-1073

VL - 13

JO - Energies

JF - Energies

IS - 17

M1 - 4537

ER -

Analysis of contact reaction phenomenon between aluminum-silver and p+ diffused layer for n-type c-Si solar cell applications

Abstract

Keywords

UN SDGs

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