Patent ID: 8721931
Filing Date: 2014-05-13
Classification: H01B,H01L,Y02E

Abstract:
1. A paste containing: a first silver powder with a crystallite size of 58-90 nm, a second silver powder with a crystallite size of 30-58 nm, wherein the first silver powder is 20-45 wt % based on the total weight of the first silver powder and the second silver powder, a glass frit, and a resin binder, wherein the paste is useful in the manufacture of a solar cell electrode, and wherein the crystallite size is calculated based on the following equation (1), D: Crystallite size λ: Wavelength of X-rays used for measurement β: Half-value width (radian) of the 111 reflection peak of Ag in the X-ray diffraction measurement θ: Diffraction angle K: Scherrer constant (0.9).