D. Choi, D. Nozu, K. Hasebe, T. Shibata, K. Nakao, M. Izuha, H. Akahori, T. Aoyama, K. Eguchi, K. Hieda, T. Arikado, K. Okumura
{"title":"热壁间歇式Ru CVD设备氧气清洗技术","authors":"D. Choi, D. Nozu, K. Hasebe, T. Shibata, K. Nakao, M. Izuha, H. Akahori, T. Aoyama, K. Eguchi, K. Hieda, T. Arikado, K. Okumura","doi":"10.1109/ISSM.2001.962972","DOIUrl":null,"url":null,"abstract":"The gas cleaning of the hot-wall batch type Ru CVD reactor by oxygen was investigated. The cleaning mechanism is considered as follows. Below 800/spl deg/C, Ru film is oxidized and forms RuO/sub 2/ which is not volatile. But above 800/spl deg/C, RuO/sub 2/ film, which is formed at first, is oxidized again to form RuO/sub 4/. Since RuO/sub 4/ is volatile, it evaporates easily. High temperature, low pressure and high oxygen flow rate were required to obtain fast Ru etching rate. With these optimum cleaning conditions by design of experiments (DOE), 30-nm-thick Ru film was removed completely in 20 minutes. We could accomplish this in situ oxygen gas cleaning effectively in short time by using hot-wall batch type Ru CVD equipment, which has high heating and cooling rate characteristics.","PeriodicalId":356225,"journal":{"name":"2001 IEEE International Symposium on Semiconductor Manufacturing. ISSM 2001. Conference Proceedings (Cat. No.01CH37203)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cleaning technique of hot-wall batch type Ru CVD equipment by oxygen gas\",\"authors\":\"D. Choi, D. Nozu, K. Hasebe, T. Shibata, K. Nakao, M. Izuha, H. Akahori, T. Aoyama, K. Eguchi, K. Hieda, T. Arikado, K. Okumura\",\"doi\":\"10.1109/ISSM.2001.962972\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The gas cleaning of the hot-wall batch type Ru CVD reactor by oxygen was investigated. The cleaning mechanism is considered as follows. Below 800/spl deg/C, Ru film is oxidized and forms RuO/sub 2/ which is not volatile. But above 800/spl deg/C, RuO/sub 2/ film, which is formed at first, is oxidized again to form RuO/sub 4/. Since RuO/sub 4/ is volatile, it evaporates easily. High temperature, low pressure and high oxygen flow rate were required to obtain fast Ru etching rate. With these optimum cleaning conditions by design of experiments (DOE), 30-nm-thick Ru film was removed completely in 20 minutes. We could accomplish this in situ oxygen gas cleaning effectively in short time by using hot-wall batch type Ru CVD equipment, which has high heating and cooling rate characteristics.\",\"PeriodicalId\":356225,\"journal\":{\"name\":\"2001 IEEE International Symposium on Semiconductor Manufacturing. ISSM 2001. Conference Proceedings (Cat. No.01CH37203)\",\"volume\":\"92 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-10-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2001 IEEE International Symposium on Semiconductor Manufacturing. ISSM 2001. Conference Proceedings (Cat. No.01CH37203)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSM.2001.962972\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2001 IEEE International Symposium on Semiconductor Manufacturing. ISSM 2001. Conference Proceedings (Cat. No.01CH37203)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSM.2001.962972","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Cleaning technique of hot-wall batch type Ru CVD equipment by oxygen gas
The gas cleaning of the hot-wall batch type Ru CVD reactor by oxygen was investigated. The cleaning mechanism is considered as follows. Below 800/spl deg/C, Ru film is oxidized and forms RuO/sub 2/ which is not volatile. But above 800/spl deg/C, RuO/sub 2/ film, which is formed at first, is oxidized again to form RuO/sub 4/. Since RuO/sub 4/ is volatile, it evaporates easily. High temperature, low pressure and high oxygen flow rate were required to obtain fast Ru etching rate. With these optimum cleaning conditions by design of experiments (DOE), 30-nm-thick Ru film was removed completely in 20 minutes. We could accomplish this in situ oxygen gas cleaning effectively in short time by using hot-wall batch type Ru CVD equipment, which has high heating and cooling rate characteristics.
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