Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells

Sungeun Park; Jooyoung Song; Sung Ju Tark; Young Do Kim; Chel Jong Choi; Soonwoo Kwon; Sewang Yoon; Chang Sik Son; Donghwan Kim

doi:10.1002/pip.2322

Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells

Sungeun Park
, Jooyoung Song
, Sung Ju Tark
, Young Do Kim
, Chel Jong Choi
, Soonwoo Kwon
, Sewang Yoon
, Chang Sik Son
, Donghwan Kim^*

^*Corresponding author for this work

Department of Semiconductor Science and Technology

Research output: Contribution to journal › Journal article › peer-review

8 Scopus citations

Abstract

Back contacts for Si solar cells made by Al evaporation and screen printing Al paste were studied by transmission electron microscopy. Si was found to diffuse into the Al during heating. Si diffusion formed vacancies in the Si wafer and Al could then penetrate the Si wafer in spiked formations. The Al spikes retracted during cooling, leaving a doped back surface field region.

Original language	English
Pages (from-to)	863-869
Number of pages	7
Journal	Progress in Photovoltaics: Research and Applications
Volume	22
Issue number	8
DOIs	https://doi.org/10.1002/pip.2322
State	Published - 2014.08

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Al back contact
BSF mechanism
in situ TEM
metallization
screen printing

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

Access to Document

10.1002/pip.2322

Cite this

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title = "Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells",

abstract = "Back contacts for Si solar cells made by Al evaporation and screen printing Al paste were studied by transmission electron microscopy. Si was found to diffuse into the Al during heating. Si diffusion formed vacancies in the Si wafer and Al could then penetrate the Si wafer in spiked formations. The Al spikes retracted during cooling, leaving a doped back surface field region.",

keywords = "Al back contact, BSF mechanism, in situ TEM, metallization, screen printing",

author = "Sungeun Park and Jooyoung Song and Tark, \{Sung Ju\} and Kim, \{Young Do\} and Choi, \{Chel Jong\} and Soonwoo Kwon and Sewang Yoon and Son, \{Chang Sik\} and Donghwan Kim",

year = "2014",

month = aug,

doi = "10.1002/pip.2322",

language = "English",

volume = "22",

pages = "863--869",

journal = "Progress in Photovoltaics: Research and Applications",

issn = "1062-7995",

number = "8",

}

TY - JOUR

T1 - Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells

AU - Park, Sungeun

AU - Song, Jooyoung

AU - Tark, Sung Ju

AU - Kim, Young Do

AU - Choi, Chel Jong

AU - Kwon, Soonwoo

AU - Yoon, Sewang

AU - Son, Chang Sik

AU - Kim, Donghwan

PY - 2014/8

Y1 - 2014/8

N2 - Back contacts for Si solar cells made by Al evaporation and screen printing Al paste were studied by transmission electron microscopy. Si was found to diffuse into the Al during heating. Si diffusion formed vacancies in the Si wafer and Al could then penetrate the Si wafer in spiked formations. The Al spikes retracted during cooling, leaving a doped back surface field region.

AB - Back contacts for Si solar cells made by Al evaporation and screen printing Al paste were studied by transmission electron microscopy. Si was found to diffuse into the Al during heating. Si diffusion formed vacancies in the Si wafer and Al could then penetrate the Si wafer in spiked formations. The Al spikes retracted during cooling, leaving a doped back surface field region.

KW - Al back contact

KW - BSF mechanism

KW - in situ TEM

KW - metallization

KW - screen printing

UR - https://www.scopus.com/pages/publications/84904511982

U2 - 10.1002/pip.2322

DO - 10.1002/pip.2322

M3 - Journal article

AN - SCOPUS:84904511982

SN - 1062-7995

VL - 22

SP - 863

EP - 869

JO - Progress in Photovoltaics: Research and Applications

JF - Progress in Photovoltaics: Research and Applications

IS - 8

ER -

Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells

Abstract

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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