Featured in Rising above – 11-2011

Stable texturization process by carbohydrates

Stable texturization: Photovoltaic industries widely use the standard texturization method with NaOH/KOH and IPA (Isopropyl alcohol) to reduce reflectivity of monocrystalline silicon ( crystal orientation) wafers. IPA promotes the formation of uniform pyramidal structure but leads to unstable process. In this work, Microsol Internationals Md. Al-Amin, A.K.M. Rahmatul Alam, Kiran Turlapati and Barath Baskaranathan have investigated carbohydrates as an additive in the etchant solution. It has no evaporation loss and thus leads to a stable process.

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pv magazine

31 Oct 2011

The etching rates of different concentrations of carbohydrates, surface morphology, reflectance factor and process stability were analyzed. A batch of 156 Pseudo-Square mono c-Si solar cells with 17.1 to 17.2 percent efficiencies was fabricated with new texturization additive and compared with standard cells. This technology is yet to be incorporated into Microsol’s production lines.Introduction In …

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