Solar photovoltaic silicon wafer texturing additive

The invention discloses a texturing additive for a solar photovoltaic silicon wafer. The texturing additive comprises a buffer component, a dispersion component, a nucleating agent, a surfactant, a texturing adjusting component and deionized water, the nucleating agent comprises hydroxypropyl methyl...

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Hauptverfasser: ZHENG JIANHUA, PENG QINWEI, JIANG JIANBO, CAO HUAGANG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a texturing additive for a solar photovoltaic silicon wafer. The texturing additive comprises a buffer component, a dispersion component, a nucleating agent, a surfactant, a texturing adjusting component and deionized water, the nucleating agent comprises hydroxypropyl methyl cellulose modified by a hydrophilic group. According to the solar photovoltaic silicon wafer texturing additive disclosed by the invention, the hydrophilic modified hydroxypropyl four-item cellulose is used as the nucleating agent, so that the water solubility of the nucleating agent can be improved, the nucleating agent is prevented from being separated out from a texturing solution at a relatively high temperature, and the formation of a pyramid on the surface of a silicon wafer can be regulated and controlled; a good suede surface can be formed, and the reflectivity is improved, so that the conversion efficiency of solar energy is improved. 本发明公开了一种太阳能光伏硅片制绒添加剂,包括缓冲组分、分散组分、成核剂、表面活性剂、绒面调节组分和去离子水;所述成核剂包括经亲水基团改性的羟