| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Reduced Silver Consumption using Particle-free Reactive Silver Inks for Low-temperature Solar Cell Metallization |
| Author(s) |
Steven John DiGregorio, Michael Martinez-Szewczvk, Subbarao Raikar, Mariana Bertoni, Owen Hildreth |
| On-Site Speaker (Planned) |
Steven John DiGregorio |
| Abstract Scope |
Particle-free reactive metal inks are an alternative conductive ink technology to nanoparticle metal inks for printed electronics. Reactive inks offer simpler synthesis, greater ink stability, and, most importantly, lower processing temperatures than particle-based inks. These low-processing temperatures enable printed electronics on thermally sensitive substrates, such as silicon heterojunction (SHJ) solar cells. This work investigates how ink heat treatment, formula, and printing parameters impact the electrical properties of reactive silver inks, emphasizing the properties pertinent to solar cell metallization. 4-point resistance measurements and top-down and cross-section microscopy characterized the printed silver fingers, and IV measurements characterized the photovoltaic performance. The best-performing ink achieved silver fingers with resistivities of 3.1 µΩ·cm and contact resistivities of 3.2 mΩ·cm2 when printed at 61 °C. This ink metallized a full-sized SHJ cell and consumed 90% less silver compared to standard metallization processes. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |