Investigation of improving texturing effect by surface saw damage etching using acidic etchant for silicon solar cells

Hayoung Park; Joon Sung Lee; Soonwoo Kwon; Sewang Yoon; Heejin Lim; Donghwan Kim

Investigation of improving texturing effect by surface saw damage etching using acidic etchant for silicon solar cells

Hayoung Park, Joon Sung Lee, Soonwoo Kwon, Sewang Yoon, Heejin Lim, Donghwan Kim

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

Abstract

Texturing for crystalline silicon solar cells is one of the important techniques to increase conversion efficiency by effective photon trapping. Generally, incoming wafers or alkali etched wafers are used for texturing. From this conventional etching process, 7-10 μm-sized random pyramids are formed. In this study, acid etching for removal of saw damages was practiced before texturing. This improved the resulting surface morphology, which consisted of 2-4 μm-sized pyramids. Because these pyramids covered the surface much more extensively, we obtained reduction of optical losses on the surface. In order to compare with conventional texturing, FE-SEM is used for observing surface morphology and reflectance data is analyzed by UV-VIS spectrophotometer.

Original language	English
Pages (from-to)	835-840
Number of pages	6
Journal	Journal of Korean Institute of Metals and Materials
Volume	46
Issue number	12
Publication status	Published - 2008 Dec

Keywords

Crystalline silicon
Optical losses
Random pyramids
Saw damage etching
Solar cells
Texturing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Modelling and Simulation
Surfaces, Coatings and Films
Metals and Alloys

Cite this

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title = "Investigation of improving texturing effect by surface saw damage etching using acidic etchant for silicon solar cells",

abstract = "Texturing for crystalline silicon solar cells is one of the important techniques to increase conversion efficiency by effective photon trapping. Generally, incoming wafers or alkali etched wafers are used for texturing. From this conventional etching process, 7-10 μm-sized random pyramids are formed. In this study, acid etching for removal of saw damages was practiced before texturing. This improved the resulting surface morphology, which consisted of 2-4 μm-sized pyramids. Because these pyramids covered the surface much more extensively, we obtained reduction of optical losses on the surface. In order to compare with conventional texturing, FE-SEM is used for observing surface morphology and reflectance data is analyzed by UV-VIS spectrophotometer.",

keywords = "Crystalline silicon, Optical losses, Random pyramids, Saw damage etching, Solar cells, Texturing",

author = "Hayoung Park and Lee, {Joon Sung} and Soonwoo Kwon and Sewang Yoon and Heejin Lim and Donghwan Kim",

year = "2008",

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T1 - Investigation of improving texturing effect by surface saw damage etching using acidic etchant for silicon solar cells

AU - Park, Hayoung

AU - Lee, Joon Sung

AU - Kwon, Soonwoo

AU - Yoon, Sewang

AU - Lim, Heejin

AU - Kim, Donghwan

PY - 2008/12

Y1 - 2008/12

N2 - Texturing for crystalline silicon solar cells is one of the important techniques to increase conversion efficiency by effective photon trapping. Generally, incoming wafers or alkali etched wafers are used for texturing. From this conventional etching process, 7-10 μm-sized random pyramids are formed. In this study, acid etching for removal of saw damages was practiced before texturing. This improved the resulting surface morphology, which consisted of 2-4 μm-sized pyramids. Because these pyramids covered the surface much more extensively, we obtained reduction of optical losses on the surface. In order to compare with conventional texturing, FE-SEM is used for observing surface morphology and reflectance data is analyzed by UV-VIS spectrophotometer.

AB - Texturing for crystalline silicon solar cells is one of the important techniques to increase conversion efficiency by effective photon trapping. Generally, incoming wafers or alkali etched wafers are used for texturing. From this conventional etching process, 7-10 μm-sized random pyramids are formed. In this study, acid etching for removal of saw damages was practiced before texturing. This improved the resulting surface morphology, which consisted of 2-4 μm-sized pyramids. Because these pyramids covered the surface much more extensively, we obtained reduction of optical losses on the surface. In order to compare with conventional texturing, FE-SEM is used for observing surface morphology and reflectance data is analyzed by UV-VIS spectrophotometer.

KW - Crystalline silicon

KW - Optical losses

KW - Random pyramids

KW - Saw damage etching

KW - Solar cells

KW - Texturing

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M3 - Article

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SN - 1738-8228

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JO - Journal of Korean Institute of Metals and Materials

JF - Journal of Korean Institute of Metals and Materials

IS - 12

ER -

Investigation of improving texturing effect by surface saw damage etching using acidic etchant for silicon solar cells

Abstract

Keywords

ASJC Scopus subject areas

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