Study on Surface Texturization of Monocrystalline Silicon Wafers with Na2CO3 and NaHCO3 Solutions

DOI

10.2991/emim-16.2016.110How to use a DOI?

Keywords

Surface texturization; Monocrystalline silicon; Reflectivity; Pyramid

Abstract

The surface texturization of monocrystalline silicon wafers based on a mixture of sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) solutions under different conditions have been studied in this work. A series of comparative experiments were made to indicate the dependence of hemispherical surface reflectivity on the Na2CO3 concentration, the NaHCO3 concentration and the solution temperature. The results showed that the Na2CO3 concentration and the solution temperature have great effects on texture. In addition, the pyramid size and the surface average reflectivity decreased with the addition of NaHCO3. On the basis of our experiments, it is shown that the optimized conditions are 24 wt% Na2CO3, 4 wt% NaHCO3, 90 °C and 30 min. Under these conditions, uniform pyramids are fabricated and the textured silicon surface exhibits a lower average reflectivity (about 12.34%) in the main range of solar spectrum (400 nm-800 nm). Because this texturization method is economical, nonhazardous and has low pollution, so we feel that it is an attractive alternative for the industrial production.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junjun Ma
AU  - Shiqing Man
PY  - 2016/04
DA  - 2016/04
TI  - Study on Surface Texturization of Monocrystalline Silicon Wafers with Na2CO3 and NaHCO3 Solutions
BT  - Proceedings of the 6th International Conference on Electronic, Mechanical, Information and Management Society
PB  - Atlantis Press
SP  - 518
EP  - 523
SN  - 2352-538X
UR  - https://doi.org/10.2991/emim-16.2016.110
DO  - 10.2991/emim-16.2016.110
ID  - Ma2016/04
ER  -