Article ID Journal Published Year Pages File Type
1553971 Superlattices and Microstructures 2012 11 Pages PDF
Abstract

Reduced surface reflectance and enhanced light trapping is required by any high efficiency solar cell. Anisotropic etching was done on silicon (1 0 0) by using tetramethyl ammonium hydroxide TMAH, (CH3)4NOH, solution at 85 °C. Process variables considered were solution concentration and time proposed by response surface methodology (RSM). An effective surface texture was resulted with reflectance less than 8% without antireflection coating. The antireflection mechanism was also co-related with the etch rate of Si. Optimized values predicted by RSM for time and TMAH concentration were 5 min and 3.50% respectively. The technique and optimization of parameters by using response surface methodology (RSM) could be valuable in the texturization process for high-efficiency Si solar cells.

► Etching was performed by using TMAH, (CH3)4NOH. ► Response surface methodology was used to optimize variables. ► Silicon etch rat was optimized to get minimum reflectivity. ► A minimum reflectivity of 7.82% has been achieved. ► Optimized values for time and concentration were 5 min and 3.50%, respectively.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
Authors
, , ,