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Enhancement of Electrical Conductivity for Ag Grid using Electrical Sintering Method
황준영(Hwang, Jun Y.),문윤재(Moon, Y.J.),이상호(Lee, S.H.),강경태(Kang, K.),강희석(Kang, H.),조영준(Cho, Y.J.),문승재(Moon, S.J.) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.05
Electrical sintering of the front electrode for crystalline silicon solar cells was performed applying a constant DC current to the printed lines. Conducting lines were printed on glass substrate by a drop-on-demand (DOD) inkjet printer and silver nanoparticle ink. Specific resistance and microstructure of sintered silver lines and were measured with varying DC current. To find the relation between temperature increase with changing applied current and specific resistance, temperature elevation was also calculated. Sintering process finished within a few milliseconds. Increasing applied DC current, specific resistance decreased and grain size increased after sintering. Achieved minimum specific resistance is approximately 1.7 times higher than specific resistance of the bulk silver.