Impact of laser pulse width on laser ablation process of high performance PERC cells

Myungsu Kim; Donghwan Kim; Dongseop Kim; Yoonmook Kang

doi:10.1016/j.solener.2014.09.001

Impact of laser pulse width on laser ablation process of high performance PERC cells

Myungsu Kim, Donghwan Kim, Dongseop Kim, Yoonmook Kang

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

8 Citations (Scopus)

Abstract

This study quantitatively compares the characteristics of ablation processes using nanosecond (ns) and picosecond (ps) pulse width green (532. nm) lasers. The laser ablation results are analyzed using Electron Probe Micro Analyzer (EPMA), quasi-steady-state photo-conductance (QSSPC) measurements and transmission electron microscopy (TEM). The ablated using the ns green laser is predominantly melted, due to the relatively longer pulse width, and laser damage is incurred to a depth of 2.5. μm. Meanwhile, the laser ablation using the ps green laser precisely removes the thin layers on the surface without severely melting the sample and the observed laser damage depth is almost negligible. However, since the maximum damage depth (~2.5. μm) using the ns laser is much shallower than the local contact depth (10-17. μm), the passivated emitter and rear cell (PERC) efficiencies using the ns and ps pulse width lasers converge to a power conversion efficiency of 19.4%.

Original language	English
Pages (from-to)	208-213
Number of pages	6
Journal	Solar Energy
Volume	110
DOIs	https://doi.org/10.1016/j.solener.2014.09.001
Publication status	Published - 2014 Dec 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MSIP)” (2014, University-Institute cooperation program); by the Human Resources Development program (No. 20124030200120) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant funded by the Korea government Ministry of Trade, Industry and Energy.

Publisher Copyright:
© 2014 Elsevier Ltd.

Keywords

Laser ablation
Nanosecond pulse width
PERC cell
Picosecond pulse width

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

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

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10.1016/j.solener.2014.09.001

Cite this

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title = "Impact of laser pulse width on laser ablation process of high performance PERC cells",

abstract = "This study quantitatively compares the characteristics of ablation processes using nanosecond (ns) and picosecond (ps) pulse width green (532. nm) lasers. The laser ablation results are analyzed using Electron Probe Micro Analyzer (EPMA), quasi-steady-state photo-conductance (QSSPC) measurements and transmission electron microscopy (TEM). The ablated using the ns green laser is predominantly melted, due to the relatively longer pulse width, and laser damage is incurred to a depth of 2.5. μm. Meanwhile, the laser ablation using the ps green laser precisely removes the thin layers on the surface without severely melting the sample and the observed laser damage depth is almost negligible. However, since the maximum damage depth (~2.5. μm) using the ns laser is much shallower than the local contact depth (10-17. μm), the passivated emitter and rear cell (PERC) efficiencies using the ns and ps pulse width lasers converge to a power conversion efficiency of 19.4%.",

keywords = "Laser ablation, Nanosecond pulse width, PERC cell, Picosecond pulse width",

author = "Myungsu Kim and Donghwan Kim and Dongseop Kim and Yoonmook Kang",

note = "Funding Information: This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MSIP)” (2014, University-Institute cooperation program); by the Human Resources Development program (No. 20124030200120) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant funded by the Korea government Ministry of Trade, Industry and Energy. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

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AU - Kim, Dongseop

AU - Kang, Yoonmook

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PY - 2014/12/1

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N2 - This study quantitatively compares the characteristics of ablation processes using nanosecond (ns) and picosecond (ps) pulse width green (532. nm) lasers. The laser ablation results are analyzed using Electron Probe Micro Analyzer (EPMA), quasi-steady-state photo-conductance (QSSPC) measurements and transmission electron microscopy (TEM). The ablated using the ns green laser is predominantly melted, due to the relatively longer pulse width, and laser damage is incurred to a depth of 2.5. μm. Meanwhile, the laser ablation using the ps green laser precisely removes the thin layers on the surface without severely melting the sample and the observed laser damage depth is almost negligible. However, since the maximum damage depth (~2.5. μm) using the ns laser is much shallower than the local contact depth (10-17. μm), the passivated emitter and rear cell (PERC) efficiencies using the ns and ps pulse width lasers converge to a power conversion efficiency of 19.4%.

AB - This study quantitatively compares the characteristics of ablation processes using nanosecond (ns) and picosecond (ps) pulse width green (532. nm) lasers. The laser ablation results are analyzed using Electron Probe Micro Analyzer (EPMA), quasi-steady-state photo-conductance (QSSPC) measurements and transmission electron microscopy (TEM). The ablated using the ns green laser is predominantly melted, due to the relatively longer pulse width, and laser damage is incurred to a depth of 2.5. μm. Meanwhile, the laser ablation using the ps green laser precisely removes the thin layers on the surface without severely melting the sample and the observed laser damage depth is almost negligible. However, since the maximum damage depth (~2.5. μm) using the ns laser is much shallower than the local contact depth (10-17. μm), the passivated emitter and rear cell (PERC) efficiencies using the ns and ps pulse width lasers converge to a power conversion efficiency of 19.4%.

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KW - Picosecond pulse width

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JO - Solar Energy

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Impact of laser pulse width on laser ablation process of high performance PERC cells

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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