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Investigation of Improving Texturing Effect by Surface Saw Damage Etching Using Acidic Etchant for Silicon Solar Cells  

Park, Hayoung (Department of materials science and engineering, Korea University)
Lee, Joon Sung (Department of materials science and engineering, Korea University)
Kwon, Soonwoo (R&D center, TS Corporation)
Yoon, Sewang (R&D center, TS Corporation)
Lim, Heejin (Department of materials science and engineering, Korea University)
Kim, Donghwan (Department of materials science and engineering, Korea University)
Publication Information
Korean Journal of Metals and Materials / v.46, no.12, 2008 , pp. 835-840 More about this Journal
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, $7{\sim}10{\mu}m$-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 $2{\sim}4{\mu}m$-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
saw damage etching; texturing; random pyramids; optical losses; crystalline silicon; solar cells;
Citations & Related Records

Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
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