Patent ID: 9608137
Date: 2017-03-28
CPC Classifications: H01B,H01L,Y02E

Claim:
1. A composition for a solar cell electrode, the composition comprising: a conductive powder; a glass frit; an organic vehicle; and a thixotropic agent, wherein the thixotropic agent includes at least one selected from an amine compound, a castor oil compound, a carbon black compound, a fumed silica compound, and an organo-clay compound, wherein a combination of the organic vehicle and the thixotropic agent, and amounts thereof, are selected such that the composition-has a first thixotropic index (TI I) of 1.5 to 2 as represented by the following Equation 1, and a second thixotropic index (TI II) of about 4 to about 8 as represented by the following Equation 2, such that the first thixotropic index is lower than the second thixotropic index, both the first thixotropic index and the second thixotropic index being measured at 23° C. by a rotary viscometer