Study of hybrid orientation structure wafer |
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Authors: | Tan Kaizhou Zhang Jing Xu Shiliu Zhang Zhengfan Yang Yonghui Chen Jun Liang Tao |
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Affiliation: | 1. National Laboratory of Analog Integrated Circuits,Chongqing 400060,China 2. Sichuan Institute of Solid-State Circuits,Chongqing 400060,China |
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Abstract: | Two types of 5 μm thick hybrid orientation structure wafers, which were integrated by (110) or (100)orientation silicon wafers as the substrate, have been investigated for 15-40 V voltage ICs and MEMS sensor applications. They have been obtained mainly by SOI wafer bonding and a non-selective epitaxy technique, and have been presented in China for the first time. The thickness of BOX SiO2 buried in wafer is 220 nm. It has been found that the quality of hybrid orientation structure with (100) wafer substrate is better than that with (110) wafer substrate by "Sirtl defect etching of HOSW". |
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Keywords: | HOT SOI (110)crystal orientation 15-40 V ICs MEMS sensor |
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