Dielectric Properties of Multi-Layers Hexagonal Boron Nitride  

作　　者：M. Fazail Khalid Ibtisam Riaz Rashid Jalil Usamah Mahmood Rehan Rahat Mir Hafiz Amir Sohail M. Fazail Khalid;Ibtisam Riaz;Rashid Jalil;Usamah Mahmood;Rehan Rahat Mir;Hafiz Amir Sohail(Department of Physics, University of Engineering and Technology, Lahore, Pakistan;Centre of Excellence in Solid State Physics, University of the Punjab, Lahore, Pakistan)

机构地区：[1]Department of Physics, University of Engineering and Technology, Lahore, Pakistan [2]Centre of Excellence in Solid State Physics, University of the Punjab, Lahore, Pakistan

出　　处：《Materials Sciences and Applications》2020年第6期339-346,共8页材料科学与应用期刊（英文）

摘　　要：A higher value of the dielectric constant of h-BN makes it quite favourable material in energy storing device. The variation in dielectric constant was observed as a function of thickness. In this research work multilayers of Hexagonal Boron Nitride (h-BN) was fabricated by using the Chemical exfoliation method. Two solvents Dimethylformamide (DMF) and Isopropyl Alcohol (IPA) were used for the exfoliation of h-BN. Successful sonication of hexagonal boron nitride led to the formation of Boron Nitride nanosheets (BNNs). The stable dispersibility of h-BN in Dimethylformamide and Isopropyl Alcohol was confirmed by UV Visible Spectroscopy, X-ray diffraction (XRD) and Scanning electron microscopy (SEM) confirm the mono crystallite structure (002) and nanoflakes like morphology of h-BN respectively. This appropriate strategy offered a feasible route to produce multilayer of hexagonal boron nitride. After the successful fabrication of h-BN multilayers its dielectric properties were calculated by using LCR meter. Profilometer revealed the variation in thickness and value of Dielectric constant was calculated by using its formula.A higher value of the dielectric constant of h-BN makes it quite favourable material in energy storing device. The variation in dielectric constant was observed as a function of thickness. In this research work multilayers of Hexagonal Boron Nitride (h-BN) was fabricated by using the Chemical exfoliation method. Two solvents Dimethylformamide (DMF) and Isopropyl Alcohol (IPA) were used for the exfoliation of h-BN. Successful sonication of hexagonal boron nitride led to the formation of Boron Nitride nanosheets (BNNs). The stable dispersibility of h-BN in Dimethylformamide and Isopropyl Alcohol was confirmed by UV Visible Spectroscopy, X-ray diffraction (XRD) and Scanning electron microscopy (SEM) confirm the mono crystallite structure (002) and nanoflakes like morphology of h-BN respectively. This appropriate strategy offered a feasible route to produce multilayer of hexagonal boron nitride. After the successful fabrication of h-BN multilayers its dielectric properties were calculated by using LCR meter. Profilometer revealed the variation in thickness and value of Dielectric constant was calculated by using its formula.

关 键 词：Hexagonal Boron Nitride (h-BN) Boron Nitride Nanosheets (BNNs) Dimethylformamide (DMF) Isopropyl Alcohol (IPA) 

分 类 号：TB3[一般工业技术—材料科学与工程]