title: Capillary flow of amorphous metal for high performance electrode.
abstract: Metallic glass (MG) assists electrical contact of screen-printed silver electrodes and leads to comparable electrode performance to that of electroplated electrodes. For high electrode performance, MG needs to be infiltrated into nanometer-scale cavities between Ag particles and reacts with them. Here, we show that the MG in the supercooled state can fill the gap between Ag particles within a remarkably short time due to capillary effect. The flow behavior of the MG is revealed by computational fluid dynamics and density funtional theory simulation. Also, we suggest the formation mechanism of the Ag electrodes, and demonstrate the criteria of MG for higher electrode performance. Consequently, when Al85Ni5Y8Co2 MG is added in the Ag electrodes, cell efficiency is enhanced up to 20.30% which is the highest efficiency reported so far for screen-printed interdigitated back contact solar cells. These results show the possibility for the replacement of electroplating process to screen-printing process.
authors.affiliation: Materials R&D Center, Samsung Advanced Institute of Technology (SAIT), San #14-1, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-712, Republic of Korea.
authors.forename: Se Yun
authors.initials: SY
authors.lastname: Kim
authors.forename: Suk Jun
authors.initials: SJ
authors.lastname: Kim
authors.forename: Sang Soo
authors.initials: SS
authors.lastname: Jee
authors.forename: Jin Man
authors.initials: JM
authors.lastname: Park
authors.forename: Keum Hwan
authors.initials: KH
authors.lastname: Park
authors.forename: Sung Chan
authors.initials: SC
authors.lastname: Park
authors.forename: Eun Ae
authors.initials: EA
authors.lastname: Cho
authors.forename: Jun Ho
authors.initials: JH
authors.lastname: Lee
authors.forename: In Yong
authors.initials: IY
authors.lastname: Song
authors.forename: Sang Mock
authors.initials: SM
authors.lastname: Lee
authors.forename: In Taek
authors.initials: IT
authors.lastname: Han
authors.forename: Ka Ram
authors.initials: KR
authors.lastname: Lim
authors.forename: Won Tae
authors.initials: WT
authors.lastname: Kim
authors.forename: Ju Cheol
authors.initials: JC
authors.lastname: Park
authors.forename: Jürgen
authors.initials: J
authors.lastname: Eckert
authors.forename: Do Hyang
authors.initials: DH
authors.lastname: Kim
authors.forename: Eun-Sung
authors.initials: ES
authors.lastname: Lee