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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jae Hyoung Choi Jeong-Hee Chung Se-Hoon Oh Jeong Sik Choi Cha-Young Yoo Sung-Tae Kim U-In Chung Joo-Tae Moon |
| Copyright Year | 2003 |
| Description | Author affiliation: Semicond. R&D Div., Samsung Electron. Co., Ltd., Gyeonggi-Do, South Korea (Jae Hyoung Choi; Jeong-Hee Chung; Se-Hoon Oh; Jeong Sik Choi; Cha-Young Yoo; Sung-Tae Kim; U-In Chung; Joo-Tae Moon) |
| Abstract | We have successfully developed a MIM capacitor process technology with a HfO/sub 2/ single layer deposited by ALD (atomic layer deposition), where a Hf(NEtMe)4 and CVD-TiN cylinder-type storage-node were used as a Hf liquid source and bottom electrode for 90 nm-scale DRAMs. Our experimental results indicated that NH/sub 3/-plasma treatment on HfO/sub 2/ film promoted crystallization below 400/spl deg/C as well as the formation of a HfO/sub x/N/sub y/ layer on the surface of the HfO/sub 2/ film. With this treatment, it was possible to solve the degradation problem of the leakage current depending on deposition method of the top electrode, and a stable leakage current without degradation was obtained up to 550/spl deg/C. As a result, a TiN/HfO/sub 2//TiN (TIT) capacitor with 1.4 /spl mu/m-height storage node was successfully demonstrated with stable leakage current of 1fA/cell at +1.2 V and high cell capacitance of 40 fF after metal-2 integration. |
| File Size | 327850 |
| File Format | |
| ISBN | 0780378725 |
| DOI | 10.1109/IEDM.2003.1269367 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-12-08 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Tin Hafnium oxide Leakage current Electrodes Degradation MIM capacitors Atomic layer deposition Crystallization Surface treatment Capacitance |
| Content Type | Text |
| Resource Type | Article |
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