Optimisation of NaOH texturisation process of silicon wafers for heterojunction solar-cells applications

Barrio, R.; González, N.; Cárabe, J.; Gandı́a, J.J.

doi:10.1016/j.solener.2011.12.013

Cited by 35 publications

(11 citation statements)

References 20 publications

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“…However, only a small number of studies have reported on the details of the texturing and the effects on silicon heterojunction solar cells, which has become a research hotspot in the photovoltaic eld. 13,14 As one of the most promising types of solar cell, silicon heterojunction (SHJ) solar cells exhibit high efficiency, low temperature processes, and low temperature coefficients. As with diffused junction crystalline-silicon solar cells, the optical gains of SHJ solar cells are generally improved by texturization.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a silicon wafer texturing process by modifying the texturing temperature for heterojunction solar cell applications

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Optimization of a silicon wafer texturing process by modifying the texturing temperature for heterojunction solar cell applications

et al. 2015

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“…The alkaline solution containing sodium hydroxide (NaOH) and isopropyl alcohol (IPA) is widely used in industrial batch process [5]. Normally the average pyramid size is varying from 2 m to 8 m, and the corresponding reflectivity is in the range of 14-15% [6][7][8][9]. To maintain stability during the texturing process, IPA must be added to the solution frequently to keep it in the same concentration because of the evaporation of IPA.…”

Section: Introductionmentioning

confidence: 99%

Formation of Various Pyramidal Structures on Monocrystalline Silicon Surface and Their Influence on the Solar Cells

Han

Wang

et al. 2013

Journal of Nanomaterials

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Texturization is a useful method to enhance the optical absorption of monocrystalline silicon wafers by light-trapping effect in solar cell processing. In present study, a series of textured wafers with various pyramid sizes ranging from 200 nm to 10 m were fabricated by modified wet-chemical method and characterized. The results show that there is little difference in the reflectance with the pyramid sizes from 1 to 10 m, which is consistent with the ray-tracing simulation results. However, the light-trapping function of the 200 nm sample below the geometrical optics limit is much weaker. The solar cells fabricated from the 1 m samples own the highest power conversion efficiency of 18.17% due to a better coverage of metal finger lines than the larger ones, and the 200 nm samples have the lowest efficiency of 10.53%.

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“…As IPA is an expensive chemical product, other solvents are studied to reduce the cost of the process [6][7][8][9][10] . Some researchers have reported the texturization with potassium carbonate (K 2 CO 3 ) [11] , sodium carbonate (Na 2 CO 3 ) [12] , Sodium silicate (Na 2 SiO 3 ) [13] and sodium phosphate (Na 3 PO 4 ) [14] solutions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Texturization for Monocrystalline Silicon Solar Cells with K3PO4/K2HPO4 Solutions

Zhao¹,

Tang²,

Zhang³

et al. 2014

Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Abstract-The texturization of monocrystalline silicon wafers using a mixture of potassium phosphate tribasic (K 3 PO 4 ) and potassium phosphate dibasic (K 2 HPO 4 ) solutions has been investigated. A series of comparative experiments were made to indicate the dependence of hemispherical surface reflectance on the solution temperature, the etching time, and the concentration of K 3 PO 4 and K 2 HPO 4 . The hemispherical surface reflectance and the surface morphology were measured with a UVVisible Spectrophotometer and a scanning electronic microscope (SEM), respectively. A wafer with uniform pyramid structures and an average weighted reflectance of 11.27% was obtained after texturing with the mixed solution of 15wt% potassium phosphate tribasic (K 3 PO 4 ) and 1wt% potassium phosphate dibasic (K 2 HPO 4 ) at 85℃ for 15min. our results show that the texturing method based on K 3 PO 4 /K 2 HPO 4 solutions is cost effective, has low pollution and good reproducibility, This method is promising for a large-scale production of crystalline silicon solar cells.

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Optimisation of NaOH texturisation process of silicon wafers for heterojunction solar-cells applications

Cited by 35 publications

References 20 publications

Optimization of a silicon wafer texturing process by modifying the texturing temperature for heterojunction solar cell applications

Optimization of a silicon wafer texturing process by modifying the texturing temperature for heterojunction solar cell applications

Formation of Various Pyramidal Structures on Monocrystalline Silicon Surface and Their Influence on the Solar Cells

Investigation of Texturization for Monocrystalline Silicon Solar Cells with K3PO4/K2HPO4 Solutions

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