童浩

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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:工学博士学位

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

Observation of carrier localization in cubic crystalline Ge2Sb2Te5 by field effect measurement
发布时间:2023-08-21  点击次数:

论文类型:期刊论文
第一作者:钱航
通讯作者:童浩
合写作者:缪向水,徐明,周凌珺,季宏凯,何明泽,童浩
发表刊物:SCIENTIFIC REPORTS
所属单位:华中科技大学
学科门类:工学
一级学科:电子科学与技术
文献类型:J
卷号:8
DOI码:10.1038/s41598-017-18964-w
发表时间:4343-12-01
摘要:The tunable disorder of vacancies upon annealing is an important character of crystalline phase-change material Ge2Sb2Te5 (GST). A variety of resistance states caused by dierent degrees of disorder can lead to the development of multilevel memory devices, which could bring a revolution to the memory industry by signicantly increasing the storage density and inspiring the neuromorphic computing. This work focuses on the study of disorder-induced carrier localization which could result in multiple resistance levels of crystalline GST. To analyze the eect of carrier localization on multiple resistant levels, the intrinsic eld eect (the change in surface conductance with an applied transverse electric eld) of crystalline GST was measured, in which GST lms were annealed at dierent temperatures. The eld eect measurement is an important complement to conventional transport measurement techniques. The eld eect mobility was acquired and showed temperature activation, a hallmark of carrier localization. Based on the relationship between eld eect mobility and annealing temperature, we demonstrate that the annealing shifts the mobility edge towards the valence-band edge, delocalizing more carriers. The insight of carrier transport in multilevel crystalline states is of fundamental relevance for the development of multilevel phase change data storage.
发布期刊链接:https://www.nature.com/articles/s41598-017-18964-w