산성 표면절삭결함 제거 공정에 의한 실리콘 태양전지의 텍스쳐링 효과 개선 : Investigation of Improving Texturing Effect by Surface Saw Damage Etching Using Acidic Etchant for Silicon Solar Cells
Investigation of Improving Texturing Effect by Surface Saw Damage Etching Using Acidic Etchant for Silicon Solar Cells
- 주제(키워드) saw damage etching , texturing , random pyramids , optical losses , crystalline silicon , solar cells
- 발행기관 대한금속·재료학회
- 발행년도 2008
- 총서유형 Journal
- UCI G704-000085.2008.46.12.005
- KCI ID ART001302589
- 본문언어 한국어
초록/요약
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.
more