Quasiparticle Energies and Optical Excitations in Chevron-Type Graphene Nanoribbon

摘要：

　　The electronic structure and optical properties of very recently synthesized chevron-type graphene nanoribbon (CGNR) are investigated within many-body Greens function and Bethe-Salpeter equation formalism.The CGNR can effectively confine both electrons and holes,leading to its exciton binding energy larger than that of regular GNRs.The excitonic peaks owing to electron-hole interactions dominate the optical spectra with a significant blue-shift and a different line shape in CGNR compared with those in regular GNRs.Moreover,the singlet-triplet exciton splitting of CGNR is also larger than that of the regular GNRs,which is expected to show high fluorescence luminescence efficiency.The enhanced excitonic effects in CGNR should be of great importance in optoclectronic applications.

作者: Shudong Wang Jinlan Wang

作者单位: Department of Physics & School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China

会议类型: 国际会议

会议名称: The 6th International Conference of Molecular Simulations and Applied Informatics Technologies(第六届国际分子模拟与信息技术应用学术会议(ICMS&I))

会议地点: 南京

会议语种:英文

页码: 385-389

在线出版日期: 2012-05-13（万方平台首次上网日期，不代表论文的发表时间）