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Requirements and challenges on an alternative indirect integration regime of low-k materialsHaase, Micha, Ecke, Ramona, Schulz, Stefan E. 22 July 2016 (has links) (PDF)
An alternative indirect integration regime of porous low-k materials was investigated. Based on a single Damascene structure the intra level dielectric SiO2 or damaged ULK was removed by using HF:H2O solutions to create free standing metal lines. The free spaces between the metal lines were refilled with a spin-on process of a low-k material. The persistence of barrier materials and copper against HF solutions, the gap fill behavior of the used spin on glass on different structure sizes and the main challenges which have to solve in the future are shown in this study.
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Requirements and challenges on an alternative indirect integration regime of low-k materialsHaase, Micha, Ecke, Ramona, Schulz, Stefan E. 22 July 2016 (has links)
An alternative indirect integration regime of porous low-k materials was investigated. Based on a single Damascene structure the intra level dielectric SiO2 or damaged ULK was removed by using HF:H2O solutions to create free standing metal lines. The free spaces between the metal lines were refilled with a spin-on process of a low-k material. The persistence of barrier materials and copper against HF solutions, the gap fill behavior of the used spin on glass on different structure sizes and the main challenges which have to solve in the future are shown in this study.
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