期刊
IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING
卷 19, 期 1, 页码 2-9出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSM.2005.863248
关键词
critical dimension metrology; Greek cross; nonstandard cleanroom materials; self patterning; sheet resistance; test structure; Van der Pauw
This paper presents work on the development, fabrication and characterization of a suspended Greek cross measurement platform that can be used to determine the sheet resistance of materials that would contaminate Complementary Metal Oxide Semiconductor (CMOS) processing lines. The arms of the test structures are made of polysilicon/silicon nitride (Si3N4) to provide a carrier for the film to be evaluated and thick aluminum (Al) probe pads for multiple probing. The film to be evaluated is simply blanket deposited onto the structures and because of its design automatically forms a Greek cross structure with (At) probe pads. To demonstrate its use, 1) gold (An), 2) copper (Cu), and 3) silver (Ag) loaded chalcogenide glass Ag-y (Ge30Se70)(1-y) have been blanket evaporated in various thicknesses onto the platform in the last processing step and autopatterned by the predefined shape of the Greek crosses. The suspension of the platform ensured electrical isolation between the test structure and the surrounding silicon (Si) substrate. The extracted effective resistivity for An (5.1 x 10(-8) Omega . m), Cu (1.8 - 2.5 x 10(-8) Omega . m) and Ag-y(Ge30Se70)(1-y) (2.27 x 10(-5) Omega . m - 1.88 Omega - m) agree with values found in articles in the Journal of Applied Physics (1963), the Journal of Physics D: Applied Physics (1976), and the Journal of Non-Crystalline Solids (2003). These results demonstrate that the proposed Greek cross platform is fully capable to measure the sheet resistance of low (An, Cu) and high Ag-y(Ge30Se70)(1-y) resistive materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据