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

Myungsu Kim, Donghwan Kim, Dongseop Kim, Yoon Mook Kang

Research output: Contribution to journalArticle

6 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 languageEnglish
Pages (from-to)208-213
Number of pages6
JournalSolar Energy
Volume110
DOIs
Publication statusPublished - 2014 Dec 1

Fingerprint

Laser ablation
Laser pulses
Lasers
Laser damage
Ablation
Conversion efficiency
Melting
Transmission electron microscopy
Electrons

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Impact of laser pulse width on laser ablation process of high performance PERC cells. / Kim, Myungsu; Kim, Donghwan; Kim, Dongseop; Kang, Yoon Mook.

In: Solar Energy, Vol. 110, 01.12.2014, p. 208-213.

Research output: Contribution to journalArticle

Kim, Myungsu ; Kim, Donghwan ; Kim, Dongseop ; Kang, Yoon Mook. / Impact of laser pulse width on laser ablation process of high performance PERC cells. In: Solar Energy. 2014 ; Vol. 110. pp. 208-213.
@article{9c1cc8df96aa47de852b7dc89125dfdf,
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 Kang, {Yoon Mook}",
year = "2014",
month = "12",
day = "1",
doi = "10.1016/j.solener.2014.09.001",
language = "English",
volume = "110",
pages = "208--213",
journal = "Solar Energy",
issn = "0038-092X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Impact of laser pulse width on laser ablation process of high performance PERC cells

AU - Kim, Myungsu

AU - Kim, Donghwan

AU - Kim, Dongseop

AU - Kang, Yoon Mook

PY - 2014/12/1

Y1 - 2014/12/1

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%.

KW - Laser ablation

KW - Nanosecond pulse width

KW - PERC cell

KW - Picosecond pulse width

UR - http://www.scopus.com/inward/record.url?scp=84907529205&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907529205&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2014.09.001

DO - 10.1016/j.solener.2014.09.001

M3 - Article

AN - SCOPUS:84907529205

VL - 110

SP - 208

EP - 213

JO - Solar Energy

JF - Solar Energy

SN - 0038-092X

ER -