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Multi-crystalline silicon solar cells with metal-assisted nano-texturing using HNO3 as hole injection agent
Date
2016-12-01
Author
Es, Fırat
Baytemir, Gulsen
Kulakci, Mustafa
Turan, Raşit
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In this study, metal-assisted etching (MAE) with nitric acid (HNO3) as a hole injecting agent has been employed to texture multi-crystalline silicon wafers. It was previously proven that addition of HNO3 enabled control of surface texturing so as to form nano-cone shaped structures rather than nanowires. The process parameters optimized for optically efficient texturing have been applied to multi-crystalline wafers. Fabrication of p-type Al: BSF cells have been carried out on textured samples with thermal SiO2/PECVD-SiNx stack passivation and screen printed metallization. Firing process has been optimized in order to obtain the best contact formation. Finally, j(sc) enhancement of 0.9 mA/cm(2) and 0.6% absolute increase in the efficiency have been achieved. This proves that the optimized MAE texture process can be successfully used in multi-crystalline wafer texturing with standard passivation methods. J-V curves and SEM images of the nano and iso-textured samples. j(sc) enhancement of 0.9 mA/cm(2) together with 0.6% absolute efficiency gain was observed on nano-textured samples. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Subject Keywords
Metal-assisted etching
,
Textures
,
Black silicons
,
Solar cells
,
Photovoltaics
,
Multicrystalline materials
,
Foraminifera
,
Foraminifera
,
Radiolarians
,
Conodont
,
Carboniferous
,
The Mersin Melange
,
Tethyan evolution
URI
https://hdl.handle.net/11511/37137
Journal
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
DOI
https://doi.org/10.1002/pssr.201600245
Collections
Department of Physics, Article