Diameter dependent doping in horizontally aligned high-density N-doped SWNT arrays

作     者：Pan Li Yiming Li Xiao Zhang Jun Chen Yingwen Cheng Yi Li Yanwen Ma Jie Liu 

作者机构：Key Laboratory for Organic Electronics and Information DisplaysJiangsu Key Laboratory for BiosensorsInstitute of Advanced Materials (LAM)Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications9 Wenyuan RoadNanjing 210023China Department of ChemistryDuke UniversityDurhamNorth Carolina 27708USA Department of Chemistry and BiochemistryNorthern Illinois UniversityDeKalbIllinois 60115USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2019年第12卷第8期

页      面：1845-1850页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Nos.51802161, 51772157, and 61504062) Natural Science Foundation of Jiangsu Province (No.BK20160886) Priority Academic Program Development of Jiangsu Higher Education Institutions (No.YX03001) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Synergistic Innovation Center for Organic Electronics and Information Displays, Jiangsu Province "Six Talent Peak"(No.2014-XCL-014) Qing Lan Project of Jiangsu Province, Jiangsu Higher Education Institutions NSF (No.17KJB430026) Scientific Research Foundation of NUPT (No.NY217012) Graduate Education Innovation Project in Jiangsu Province (No.CXZZ12_0461) Keypoint Research and Invention Program of Jiangsu Province (No.BE2018010-3). 

主　　题：single-walled carbon nanotube (SWNT) array chemical vapor deposition (CVD) N-doping diameter dependent doping Raman spectroscopy 

摘      要：We reported the growth of horizontally aligned nitrogen-doped single-walled carbon nanotubes (SWNTs) on quartz substrates. The synthesized SWNTs were comprehensively characterized at the single nanotube level. Owing to the highly aligned nature of the nanotubes, we were able to investigate the diameter dependent doping mechanism through systematic resonant Raman spectroscopy studies. Other than the formerly found narrowing effect by N-doping, we proposed that the nanotube diameter affects the introduction of N atoms into the carbon lattice in an elaborate way. The obtained doping level increased along with the nanotube diameter but lost the increasing trend when the diameter became larger and experienced a slight decrease after reaching the local peak value. These insights about the heteroatom doping into the carbon nanotubes could benefit the development of the carbon nanotube based functional materials and extend their application in a broad range of areas.