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Personal information
教授 博士生导师
所在单位：集成电路学院
学历：研究生(博士)毕业
学位：博士学位
毕业院校：华中科技大学
学科：微电子学与固体电子学曾获荣誉：
2024 华中科技大学青年五四奖章
2022 华为奥林帕斯先锋奖
2020 湖北省技术发明一等奖（排名第2）
2013 湖北省年度“十大科技事件”
2013 湖北省优秀博士学位论文
2014 湖北省优秀学士学位论文指导教师
2015 华中科技大学教师教学竞赛二等奖
2017 华中科技大学光学与电子信息学院“我最喜爱的教师班主任“
2020 华中科技大学光学与电子信息学院突出贡献一等奖
论文类型：期刊论文
第一作者：徐萌
通讯作者：徐明,乔崇
合写作者：缪向水,Wang,Songyou,童浩,Ho,Kai-Ming,程晓敏,辜融川,麦贤良
发表刊物：Journal of Materials Chemistry C
所属单位：华中科技大学，Ames Laboratory，复旦大学
学科门类：工学
一级学科：电子科学与技术
文献类型：J
卷号：9
期号：25
页面范围：8057-8065
DOI码：10.1039/D1TC01433A
发表时间：4428-04-01
摘要：Sb-Based phase-change materials have exhibited tremendous advantages in both data storage and reconfigurable photonic devices. Despite the intensive studies on their structures and properties in the crystalline state, the widely used amorphous phase remains elusive. Here, we investigate amorphous Sb2Te3, Sb2Se3, and Sb2S3 through ab initio calculations to link their unique properties to the local structure and bonding nature. We discover that Sb forms shorter and stronger bonds with Se and S than Te, and the average bonding angles of Se (92.0°) and S (94.1°) show larger distortion than that of Te (91.5°). This leads to larger Peierls-like distortion in Sb2Se3 and Sb2S3. On the other hand, more charge transfer and void fraction are presented, opening band gaps and leading to different electronic and optical properties. In contrast, Sb2Te3, due to its semiconducting behavior and low thermal stability, enables its application in phase-change memory. Our results reveal the physics of vastly different electronic and optical properties induced by S, Se, and Te alloying, providing an effective strategy for materials design.
发布期刊链接：https://pubs.rsc.org/en/content/articlelanding/2021/tc/d1tc01433a/unauth