The fabrication of multicomponent devices presents a challenge when facing the densification process. In the case of a microcapacitor, it involves a matrix of a dielectric componenet, such a Barium Titanate (BTO), sandwiched between electrodes for which a metallic material is commonly used. The material phases involved possesses different thermal properties which make impossible to densify at the same temperature and time. The combination of different laser technologies such as Laser-Induced Forward Transfer (LIFT) and Selective Laser Sintering (SLS) could be the key to fabricate these multicomponent devices by using digitazable technologies. In previous works the LIFT deposition and the Selective Laser Sintering of BTO has been prospected. Only superficial densification has been obtained on the dielectric component by SLS. In this work, LIFT and conventional sintering of BTO combined with the LIFT deposition and SLS of silver pastes are proposed for the fabrication of a first prototype.
Laser-Induced Forward Transfer (LIFT) is a versatile technique, allowing the transfer of a wide range of materials, with no contact, and high accuracy. Here we show a complete study on the deposition by LIFT, focusing on the deposition of a high viscosity silver paste, from the LIFT process parametrization to the metallization and characterization of heterojunction silicon solar cells.
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