High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application

Ana Pena; Zengbo Wang; David Whitehead; Lin Li

High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application

Ana Pena, Zengbo Wang, David Whitehead, Lin Li

Mechanical and Aerospace Engineering

Research output: Chapter in Book/Conference proceeding › Conference contribution

Abstract

The demand for efficient, alternative sources of energy is a growing and crucial issue in today's world. Solar energy offers a vast, inexhaustible, free and clean option for future power needs. Although new technologies emerge every day, silicon-based solar panels represent the most feasible and commercial solution. The reason for this is its well established manufacturing process and the abundance of this material in the earth's crust. In order to achieve highly efficient devices, all losses associated with the photovoltaic cell operation must be minimized. Amongst them, optical losses as high as 30% light reflectivity are characteristic of bare Si substrates. In this paper reduced reflectivity is reported by micro-texturing the front surface of a single crystalline silicon wafer using a diode pumped Nd:YVO4 laser system with a computer controlled 3 axis galvanometer beam scanner. High laser scanning speeds (∼1 m/s) were applied so this texturing technique might compete with current industrial texturing practices.

Original language	English
Title of host publication	ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings\|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.
Place of Publication	USA
Publisher	Laser Institute of America
Pages	1485-1494
Number of pages	9
Volume	102
ISBN (Print)	9780912035598
Publication status	Published - 2009
Event	28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009 - Orlando, FL Duration: 1 Jul 2009 → …

Conference

Conference	28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009
City	Orlando, FL
Period	1/07/09 → …

Keywords

laser, micro, texturing, solar, energy, Si

UN SDGs

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

LPRC: Laser Processing Research Centre Impact
Allegre, O. (PI), Crosby, D. (PI), Domingos, M. (PI), Francis, J. (PI), Gillen, D. (PI), Guo, W. (PI), Li, L. (PI), Mativenga, P. (PI), Rogers, B. D. (PI), Whitehead, D. (PI), Wilson, D. (PI), Zhong, S. (PI), Mirhosseini, N. (Researcher), Ouyang, J. (Researcher), Huang, Y. (Researcher), Wei, C. (Researcher), Cheng, D. (PGR student), Suryo Pratomo, E. (PGR student), Zhang, Z. (PGR student), Li, Z. (PGR student), Mo, H. (PGR student), Zhu, M. (PGR student), Li, Q. (PGR student), Liu, W. (PGR student), Wang, L. (PGR student), Guo, H. (PGR student), Heinemann, R. (PI) & Liu, Z. (PI)
1/04/00 → …
Project: Research

Cite this

Pena, A., Wang, Z., Whitehead, D., & Li, L. (2009). High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application. In ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc. (Vol. 102, pp. 1485-1494). Laser Institute of America.

Pena, Ana ; Wang, Zengbo ; Whitehead, David et al. / High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application. ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.. Vol. 102 USA : Laser Institute of America, 2009. pp. 1485-1494

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title = "High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application",

abstract = "The demand for efficient, alternative sources of energy is a growing and crucial issue in today's world. Solar energy offers a vast, inexhaustible, free and clean option for future power needs. Although new technologies emerge every day, silicon-based solar panels represent the most feasible and commercial solution. The reason for this is its well established manufacturing process and the abundance of this material in the earth's crust. In order to achieve highly efficient devices, all losses associated with the photovoltaic cell operation must be minimized. Amongst them, optical losses as high as 30% light reflectivity are characteristic of bare Si substrates. In this paper reduced reflectivity is reported by micro-texturing the front surface of a single crystalline silicon wafer using a diode pumped Nd:YVO4 laser system with a computer controlled 3 axis galvanometer beam scanner. High laser scanning speeds (∼1 m/s) were applied so this texturing technique might compete with current industrial texturing practices.",

keywords = "laser, micro, texturing, solar, energy, Si",

author = "Ana Pena and Zengbo Wang and David Whitehead and Lin Li",

year = "2009",

language = "English",

isbn = "9780912035598",

volume = "102",

pages = "1485--1494",

booktitle = "ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.",

publisher = "Laser Institute of America",

address = "United States",

note = "28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009 ; Conference date: 01-07-2009",

}

Pena, A, Wang, Z, Whitehead, D & Li, L 2009, High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application. in ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.. vol. 102, Laser Institute of America, USA, pp. 1485-1494, 28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009, Orlando, FL, 1/07/09.

High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application. / Pena, Ana; Wang, Zengbo; Whitehead, David et al.
ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.. Vol. 102 USA: Laser Institute of America, 2009. p. 1485-1494.

Research output: Chapter in Book/Conference proceeding › Conference contribution

TY - GEN

T1 - High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application

AU - Pena, Ana

AU - Wang, Zengbo

AU - Whitehead, David

AU - Li, Lin

PY - 2009

Y1 - 2009

N2 - The demand for efficient, alternative sources of energy is a growing and crucial issue in today's world. Solar energy offers a vast, inexhaustible, free and clean option for future power needs. Although new technologies emerge every day, silicon-based solar panels represent the most feasible and commercial solution. The reason for this is its well established manufacturing process and the abundance of this material in the earth's crust. In order to achieve highly efficient devices, all losses associated with the photovoltaic cell operation must be minimized. Amongst them, optical losses as high as 30% light reflectivity are characteristic of bare Si substrates. In this paper reduced reflectivity is reported by micro-texturing the front surface of a single crystalline silicon wafer using a diode pumped Nd:YVO4 laser system with a computer controlled 3 axis galvanometer beam scanner. High laser scanning speeds (∼1 m/s) were applied so this texturing technique might compete with current industrial texturing practices.

AB - The demand for efficient, alternative sources of energy is a growing and crucial issue in today's world. Solar energy offers a vast, inexhaustible, free and clean option for future power needs. Although new technologies emerge every day, silicon-based solar panels represent the most feasible and commercial solution. The reason for this is its well established manufacturing process and the abundance of this material in the earth's crust. In order to achieve highly efficient devices, all losses associated with the photovoltaic cell operation must be minimized. Amongst them, optical losses as high as 30% light reflectivity are characteristic of bare Si substrates. In this paper reduced reflectivity is reported by micro-texturing the front surface of a single crystalline silicon wafer using a diode pumped Nd:YVO4 laser system with a computer controlled 3 axis galvanometer beam scanner. High laser scanning speeds (∼1 m/s) were applied so this texturing technique might compete with current industrial texturing practices.

KW - laser, micro, texturing, solar, energy, Si

M3 - Conference contribution

SN - 9780912035598

VL - 102

SP - 1485

EP - 1494

BT - ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.

PB - Laser Institute of America

CY - USA

T2 - 28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009

Y2 - 1 July 2009

ER -

Pena A, Wang Z, Whitehead D, Li L. High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application. In ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings|ICALEO - Int. Congr. Appl. Lasers Electro-Opt., Congr. Proc.. Vol. 102. USA: Laser Institute of America. 2009. p. 1485-1494

High speed laser micro-texturing of Si wafer for improved light trapping for photo-voltaic application

Abstract

Conference

Keywords

UN SDGs

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Projects

LPRC: Laser Processing Research Centre Impact

Cite this