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          首页  >  研究生教育  >  通知公告  >  正文
          【成电EMC2论坛 第007期】Perovskite Thin Films and Single Crystals for Direct X-ray Detection
          发布日期:2018-05-13作者:管理员 阅读次数:

          题 目: Perovskite Thin Films and Single Crystals for Direct X-ray Detection


          主讲人: 周航(北京大学深圳研究生院 副教授)

          主持人: 刘明侦(教授)

          时 间: 2018年5月14日(周一)亚博体彩竞猜-官网,11点

          地 点: 沙河校区211楼408B



          主讲人简介:

          中山大学物理学学士,剑桥大学电子工程系博士,深圳市孔雀人才,现任深圳市薄膜晶体管与先进显示重点实验室副主任亚博体彩竞猜-官网,主要研究领域为钙钛矿光电器件、金属氧化物半导体薄膜亚博体彩竞猜-官网、柔性光电子等亚博体彩竞猜-官网。已主持国家级项目1项,省级项目1项,市级项目5项。近五年累计发表SCI/EI论文40余篇,代表论文收录在Advanced Materials、Nano Letters、Nanotechnology(IOP)等JCR一区期刊上,在光电探测器领域有多篇高倍引文章,钙钛矿光电器件论文被英国物理协会旗下核心杂志评委2015年十大热点文章。目前课题组已拥有在站博士后3名及实验工程师2名亚博体彩竞猜-官网,每年培养硕士研究生6名。


          讲座内容:

          X-ray detectors are widely used in medical diagnosis, such as ammography or computed tomography. However, state-of-art of X-ray detectors suffer from high manufacturing cost. Low cost organolead halide perovskite materials which comprise of Pb and I elements with large atomic numbers have made them competitive candidates for direct X-ray detection. In this talk, we demonstrate a methylammonium lead iodide (CH3NH3PbI3) thin film based photodiode for direct X-ray detection. The solution-processed perovskite photodiode exhibited a moderate responsivity of 12.5A/W. Furthermore, we show that by growing cubic structure methylammonium lead bromine (CH3NH3PbBr3) single crystal, X-ray detector can be easily fabricated using metal-semiconductor-metal device structure. When exposed to X-ray irradiation, the single crystal perovskite X-ray detector demonstrate excellent sensitivity of 60μCGyair-1cm-2, which is comparable to that of commercial amorphous selenium detectors.


          热忱欢迎广大师生积极参与!


          "亚博体彩竞猜-官网

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