US 9,812,594 B2
Solar cell and method of manufacture thereof, and solar cell module
Daisuke Adachi, Settsu (JP); Kenji Yamamoto, Settu (JP); Jose Luis Hernandez, Brussels (BE); and Nick Valckx, Brussels (BE)
Assigned to KANEKA CORPORATION, Osaka-shi, Osaka (JP)
Filed by KANEKA CORPORATION, Osaka-shi, Osaka (JP)
Filed on Jan. 15, 2016, as Appl. No. 14/997,404.
Application 14/997,404 is a continuation of application No. 13/983,553, granted, now 9,246,026, previously published as PCT/JP2012/070401, filed on Aug. 9, 2012.
Claims priority of application No. 2011-255362 (JP), filed on Nov. 22, 2011; application No. 2012-023118 (JP), filed on Feb. 6, 2012; and application No. 2012-044179 (JP), filed on Feb. 29, 2012.
Prior Publication US 2016/0133765 A1, May 12, 2016
Int. Cl. H01L 31/00 (2006.01); H01L 31/0224 (2006.01); H01L 31/0445 (2014.01)
CPC H01L 31/022475 (2013.01) [H01L 31/022425 (2013.01); H01L 31/0445 (2014.12); Y02E 10/542 (2013.01); Y02P 70/521 (2015.11)] 10 Claims
OG exemplary drawing
 
1. A solar cell comprising: a photoelectric conversion section; and a collecting electrode on one main surface of the photoelectric conversion section, wherein
the collecting electrode includes a first electroconductive layer and a second electroconductive layer in this order from a photoelectric conversion section side, and further includes an insulating layer between the first electroconductive layer and the second electroconductive layer, wherein an opening section is formed in the insulating layer;
the first electroconductive layer is covered with the insulating layer;
the first electroconductive layer includes a first-melting-point material and a second-melting-point material,
a thermal-fluidization onset temperature T1 of the first-melting-point material is lower than a heat-resistant temperature of the photoelectric conversion section, and a thermal-fluidization onset temperature T2 of the second-melting-point material is higher than T1, and
a part of the second electroconductive layer is conductively connected with the first electroconductive layer through the opening section of the insulating layer,
wherein the first-melting-point material includes a metallic material.