Ultra-high conductivity metallization pastes for heterojunction solar cells (TCOC)

• Research unit: INNOSUISSE
• Project number: 9908.2;4 PFNM-NM

Short description (English)

Ultra-high conductivity metallization pastes for heterojunction solar cells (TCOC)

Short description (French)

Ultra-high conductivity metallization pastes for heterojunction solar cells (TCOC)

Abstract (English)

The TCOC project aims at developing nano-enabled low temperature curable silver pastes exhibiting resistivity below 1¿ª10-5 ¿Ç¿ªcm compatible with high efficiency heterojunction solar cells (HJC). To attain the desired conductivity level, the silver pastes will contain a mix of micron-size silver particles and low cost silver nanoparticles as a conductivity enhancer active at low temperatures. As nanoparticles are expected to have a detrimental effect on rheology, paste development will also focus on obtaining high aspect ratio screen printable pastes. Seed layer pastes for further plating will finally be trialed as they may offer an interesting alternative for high performance metallization of HJC.

Abstract (French)

The TCOC project aims at developing nano-enabled low temperature curable silver pastes exhibiting resistivity below 1¿ª10-5 ¿Ç¿ªcm compatible with high efficiency heterojunction solar cells (HJC). To attain the desired conductivity level, the silver pastes will contain a mix of micron-size silver particles and low cost silver nanoparticles as a conductivity enhancer active at low temperatures. As nanoparticles are expected to have a detrimental effect on rheology, paste development will also focus on obtaining high aspect ratio screen printable pastes. Seed layer pastes for further plating will finally be trialed as they may offer an interesting alternative for high performance metallization of HJC.