物理与电子工程学院2019年榕树讲座计划（11月25日——12月1日）
2019年11月22日 19:31 来源：本站 点击： [打印] [收藏] [关闭]
校内教师讲座
活动1
主讲题目：Morphology and Structure Properties of Boron-doped Diamond Films Prepared by Hot Cathode Direct Current Plasma Chemical Vapor Deposition
主讲人：潘孟美
时间：2019/11/26
地点：物理楼201会议室
主办学院: 物理与电子工程学院
主讲人简介：潘孟美，女，海南文昌人，理学硕士，副教授。1995年本科毕业于华中理工大学，2001年华中科技大学在职研究生毕业并获得理论物理硕士学位。 1995年-至今就职于海南师范大学物理与电子工程学院。研究方向：计算物理、染料敏化太阳能电池、纳米晶金刚石膜薄膜的研究等，发表学术论文10余篇，其中SCI3篇，主持省级项目3项。
内容简介：Boron-doped diamond (BDD) films were deposited by hot cathode direct current plasma chemical vapor deposition (HCDC-PCVD) according to various mixture ratios of CH4/H2/B(OCH3)3 gas. The Raman performances and surface morphologies of the BDD films were then characterized by Raman spectroscopy and scanning electron microscopy (SEM). Results indicated that the flow rate of B(OCH3)3 had marked effects on the growth characteristics of the produced boron-doped diamond films. The presence and concentration of the doped boron atoms significantly altered both the surface morphologies and structures of the diamond films. With increasing flow rate of B(OCH3)3, the crystal grain surfaces became smooth as visible under SEM. The B-doping levels in these films increased from 1.75 × 1019 cm-3 to a maximum of 2.4 × 1021 cm-3 , estimated from the Raman spectra
活动2
主讲题目：Enhanced Efficiency of Dye-Sensitized Solar Cell by High Surface Area Anatase-TiO2-Modified P25 Paste
主讲人：潘孟美
时间：2019/11/29
地点：物理楼201会议室
主办学院: 物理与电子工程学院
主讲人简介：潘孟美，女，海南文昌人，理学硕士，副教授。1995年本科毕业于华中理工大学，2001年华中科技大学在职研究生毕业并获得理论物理硕士学位。 1995年-至今就职于海南师范大学物理与电子工程学院。研究方向：计算物理、染料敏化太阳能电池、纳米晶金刚石膜薄膜的研究等，发表学术论文10余篇，其中SCI3篇，主持省级项目3项。
内容简介：How to improve the conversion efficiency and the stability of dye-sensitized solar cells (DSSCs) are two major problems. Furthermore, reduction of the manufacturing cost of DSSCs and large-scale manufacture are also very important factors. As a raw material, commercial P25 would be used for large-scale manufacture of TiO2 paste with simple preparation procedure. However, there are several drawbacks for P25 such as the low surface area of P25 powder and the poor connectivity among particles in film using tradition P25 paste without modification. In this paper, we introduced a simple modified method by adding high surface area anatase TiO2 into pure P25 paste. The photoelectric conversion performances of DSSCs based on these photo-electrodes were tested. The results show that the open-circuit voltage, the fill factor and the energy conversion efficiency of the modified electrode were increased. It is found that the modified P25 films have fast electron transportation and a slow charge recombination. We conclude that through adding the anatase TiO2 nanoparticles to the P25 paste with high surface area, it can not only improve the particles connectivity among inside the films, but also enhance the efficiency of DSSCs.
活动3
主讲题目：场域中的博弈:论新媒体时代民族精神教育的挑战与机遇
主讲人：张辽
时间：2019年11月25日下午2:30
地点：田家炳303教室
主办学院:物理与电子工程学院
主讲人简介： 张辽，男，河南南阳人，硕士，讲师。现任物电学院辅导员，从事大学生思想政治教育工作。发表论文7篇，主持省级课题1项。
内容简介：新媒体教育场域作为当代教育视界中人的一种客观存在方式,给大学生带来信息自由的同时,使政府、学校、教师、学生这些实体性要素在民族精神教育上的着力点与着力范围发生变化。根据以上内容，提出新媒体时代高校民族精神教育应坚持适应与创新并存,坚定立场、尊重变化、转变方式,捍卫中华民族精神主流意识形态的权威性。
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