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

Department of Materials Science and Engineering

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

7 Citations (Scopus)

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
Publication status	Published - 2014 Jan 1

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

UN SDGs

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

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10.1002/pip.2322

Cite this

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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",

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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 - 2014/1/1

Y1 - 2014/1/1

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

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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

ASJC Scopus subject areas

UN SDGs

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