Affiliation of Author(s):材料科学与技术学院

Journal:PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE

Key Words:black silicon isotropic KMnO4 metal-assisted chemical etching

Abstract:Metal-assisted chemical etching (MACE) method is an efficient way to improve the power conversion efficiency of solar cell by developing nanostructures. Normally, hydrogen peroxide is widely used as an oxidizing agent, through which anisotropic etching of nanostructures could be achieved. Here, nanoscale textured multi-crystalline silicon (mc-Si) solar cell with an efficiency of 18.13% was fabricated by MACE method with potassium permanganate (KMnO4) as an oxidizing agent. The isotropic etching by KMnO4 showed the great uniformity of surface reflectance, corresponding to the isotropic oval pits. The solar cell presented an increase of 0.72mA . cm(-2) in the short-circuit current density comparing with the mc-Si solar cell fabricated by the traditional process. Though the efficiency still needed optimizing, isotropic etching for mc-Si would lead a new tendency for MACE technique. (C) 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

ISSN No.:1862-6300

Translation or Not:no

Date of Publication:2017-05-01

Co-author:郑超凡,蒲天,吴兢,芮春宝,杨汪扬,Lily

Correspondence Author:shl