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物理學(xué)院“博約學(xué)術(shù)論壇”系列報(bào)告第 151 期 (2018年第13期)

來源:   發(fā)布日期:2018-05-09


題目: Non-Adiabatic Molecular Dynamics Investigations on the Excited
報(bào)告人:趙瑾 教授(中國科學(xué)技術(shù)大學(xué)) 
時(shí)  間:2018年5月11日(周五) 下午2:00
地  點(diǎn):北京理工大學(xué)中心教學(xué)樓610      

摘要:
The ultrafast dynamics of photo-excited charge carriers in condensed matter systems plays an important role in optoelectronics and solar energy conversion. Yet it is challenging to understand the multi-dimensional dynamics in time, energy, real and momentum spaces at the atomic scale. Combining the real-time time-dependent Density Functional Theory (TDDFT) with fewest surface hopping scheme, we use homemade time-dependent ab initio nonadiabatic molecular dynamics code (Hefei-NAMD) to simulate the excited carrier dynamics in different condensed matter systems including two-dimensional vdW heterostructures and molecule/metal oxide interfaces. The time-dependent dynamics of excited carriers are studied in energy, real and momentum spaces. In addition, the coupling of the excited carriers with phonons, polarons, defects and molecular adsorptions are investigated. Recently, by combining with path-integral techniques, the nuclear quantum effects have been included in the NAMD simulations. Our state of art NAMD studies provide an atomic insight into the ultrafast dynamics of the excited carriers in condensed matter systems.

簡歷:
  趙瑾,,1998 年畢業(yè)于中國科學(xué)技術(shù)大學(xué)物理系,2003 年于中國科學(xué)技術(shù)大學(xué)理化科學(xué)中心獲得博士學(xué)位(指導(dǎo)教師:侯建國院士,,楊金龍教授)。2004 年3 月起在美國匹茲堡大學(xué)Hrvoje Petek教授組內(nèi)工作。2008 年8 月起成為匹茲堡大學(xué)物理系研究助理教授,,2010 年初成為中國科學(xué)技術(shù)大學(xué)物理系及合肥微尺度國家實(shí)驗(yàn)室教授,,匹茲堡大學(xué)兼職教授(adjunct Prof.),并入選百人計(jì)劃,。2013年獲基金委優(yōu)秀青年基金資助,。趙瑾教授的研究小組關(guān)注于利用第一性原理計(jì)算從時(shí)間、空間,、動量與能量等多個尺度對激發(fā)態(tài)動力學(xué)的超快過程進(jìn)行描述,,同時(shí)研究激發(fā)態(tài)載流子與聲子、極化子,、缺陷,、邊界等的相互作用。迄今為止趙瑾教授共發(fā)表SCI論文76篇,,包括3篇Science,,1篇Nature Photonics, 5篇Phys. Rev. Lett., 2篇Chem. Rev.,1篇Acc. Chem. Res.,,1篇Annu. Rev. Phys. Chem.,,6篇J. Am. Chem. Soc.,4篇Nano Lett.,,7篇ACS NANO,,2篇Nature Communications,16篇Phys. Rev. B等,。他引次數(shù)2000余次,,H因子為28。


聯(lián)系方式:物理學(xué)院辦公室 (68913163)
邀請人:李元昌
網(wǎng)    址:http://physics.bit.edu.cn/