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PRINT-ON PASTES WITH METAL-BASED ADDITIVES FOR MODIFYING MATERIAL PROPERTIES OF METAL PARTICLE LAYERS
PRINT-ON PASTES WITH METAL-BASED ADDITIVES FOR MODIFYING MATERIAL PROPERTIES OF METAL PARTICLE LAYERS
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机译:带有金属基添加剂的印刷浆料,用于修改金属颗粒层的材料性能
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摘要
Intercalation pastes for use with semiconductor devices are disclosed. The pastes contain precious metal particles, intercalating particles, organic vehicle, and metal-based additives (MBAs). MBAs can be used to improve the material properties of metal particle layers. Specific formulations have been developed to be screen-printed directly onto a dried metal particle layer and fired to make a fired multilayer stack. The fired multilayer stack can be tailored to create a solderable surface, high mechanical strength, and low contact resistance. In some embodiments, the fired multilayer stack can etch through a dielectric layer to improve adhesion to a substrate. Such pastes can be used to increase the efficiency of silicon solar cells, specifically multi- and mono-crystalline silicon back-surface field (BSF), and passivated emitter and rear contact (PERC) photovoltaic cells. Other applications include integrated circuits and more broadly, electronic devices.
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