On the Ink Jetting of Full Front Ag Gridlines for Cost-Effective Metallization of Si Solar Cells
作者： Abasifreke Ebong , Ian B. Cooper , Brian Rounsaville , Ajeet Rohatgi , Miki Dovrat
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摘要: In this letter, we report on the ink-jet full gridline cells with three different Ag dosages (70, 90, and 130 mg) 75-Ω/sq emitters. We observed that open-circuit voltage (VOC), short-circuit current density (JSC), fill factor (FF ) were highest for 130-mg dose decrease thereafter as dosage decreases. Because of decreased FF decreasing dosage, efficiency followed same trend. However, demonstrated, first time, fully ink-jetted front gridlines an 0.765 18.4% 239-cm2 commercial CZ wafers a sheet resistance 75 Ω/sq . Noteworthy is achievement 17.8% only 70 mg Ag, which ~ 68% less than used screen-printed gridlines. This represents cost saving $0.245 per 6-inch wafer compared to counterpart 220 Ag.
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