{"title":"A novel MOS radiation dosimeter based on the MEMS-made oxide layer","authors":"H. Liu, Y. Yang, J. Zhang","doi":"10.1109/TRANSDUCERS.2015.7181133","DOIUrl":null,"url":null,"abstract":"This paper reports a novel MOS dosimeter with a very thick and defect-rich oxide layer fabricated by MEMS technology. We combined deep-reactive-ion etching (DRIE), thermal oxidation and LPCVD to prepare an oxide layer of 5μm containing multiple and large interfaces. Our devices were irradiated by γ-rays of 60Co at 2Gy per minute for 2hrs and thermally stimulated current (TSC) method was used to determine the readout of dosimeters. Results show that there is a peak current about 450nA, indicating a total TSC charge of 158μC and sensitivity of 5.5nC/mm2·Gy, which is 40 times the sensitivity of previous MOS dosimeters.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TRANSDUCERS.2015.7181133","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This paper reports a novel MOS dosimeter with a very thick and defect-rich oxide layer fabricated by MEMS technology. We combined deep-reactive-ion etching (DRIE), thermal oxidation and LPCVD to prepare an oxide layer of 5μm containing multiple and large interfaces. Our devices were irradiated by γ-rays of 60Co at 2Gy per minute for 2hrs and thermally stimulated current (TSC) method was used to determine the readout of dosimeters. Results show that there is a peak current about 450nA, indicating a total TSC charge of 158μC and sensitivity of 5.5nC/mm2·Gy, which is 40 times the sensitivity of previous MOS dosimeters.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
