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Cited 2 time in webofscience Cited 2 time in scopus
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Novel Double Acidic Texturing Process for Saw-Damage-Free Kerfless Multicrystalline Silicon Wafers

Authors
Jung, YujinBae, SoohyunLee, Hae-SeokKim, DonghwanKang, Yoonmook
Issue Date
11월-2020
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Acidic etching; acidic texturing; additive-free texturing; Kerfless silicon texturing; Kerfless wafer; multicrystalline texturing; silicon texturing; solar cell texturing; solar cell; surface texture; surface treatment
Citation
IEEE JOURNAL OF PHOTOVOLTAICS, v.10, no.6, pp.1545 - 1551
Indexed
SCIE
SCOPUS
Journal Title
IEEE JOURNAL OF PHOTOVOLTAICS
Volume
10
Number
6
Start Page
1545
End Page
1551
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/52018
DOI
10.1109/JPHOTOV.2020.3014858
ISSN
2156-3381
Abstract
Since the kerfless wafer method for manufacturing multicrystalline silicon (mc-Si) wafers does not involve a sawing process, there occurs no saw damage on the surface, and the product is characterized by a flat surface morphology. These wafers cannot be effectively textured under the conditions of a conventional acidic etching solution with stability or efficiency because the surfaces are free of the surface damage caused by sawing. The texturing process developed in this article uses a conventional acidic etching solution without additives and a metal catalyst; the resulting process is a novel double acidic texturing (DAT) process capable of texturing using hydrofluoric acid (HF), HNO3, CH3COOH, and deionized water. The kerfless wafers treated with this novel texturing treatment had a weighted average reflectance (R-w) of 25.40 %, which is similar to 5.76% less than that of kerfless wafers textured under conventional acidic texturing conditions (R-w = similar to 31.16%). A solar cell manufactured with the new DAT process showed an enhanced short-circuit current density (+2.65mA center dot cm(-2)), fill factor (+3.87%), and efficiency (+2.18%) than those of a cell fabricated without using this novel double treatment.
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Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles

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공과대학 (신소재공학부)
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