Effect of nitrogen doping on structural and optical properties of ZnO nanoparticles

Progress in Natural Science: Materials International

卷:25

Anshuman Sahai¹  Navendu Goswami¹  Renu Kumari² 

[1] Department of Physics and Materials Science and Engineering, Jaypee Institute of Information Technology, A-10, Sector-62, Noida 201307, India;

[2] Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India;

关键词: II–VI Semiconductors;    Infrared spectra;    Raman spectra;    Optical properties of low-dimensional;    Mesoscopic;    Nanoscale materials and structures;   

DOI  :  10.1016/j.pnsc.2015.08.003

来源: DOAJ

【 摘 要 】

Influence of nitrogen doping on structural and optical properties of ZnO nanoparticles has been studied. Undoped and N doped ZnO nanoparticles were synthesized via chemical precipitation approach. The prepared samples were characterized through X-ray diffraction (XRD), Transmission electron microscopy (TEM) equipped with Energy dispersive X-ray (EDAX) spectroscopy, UV–visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy and micro-Raman spectroscopy (µRS). Wurtzite phase of undoped as well as 0.5–10% N doped ZnO nanoparticles was confirmed through characteristic XRD patterns. The particle size expansion due to N incorporation in ZnO was further revealed by TEM and EDAX analysis where 11 nm size undoped and 18–22 nm size 0.5–10% N doped ZnO (N:ZnO) nanoparticles without any impurity were ascertained. Slight blue-shift in band gap energy, as observed in our case, symbolized weak quantum confinement of the prepared nanoparticles. The alterations in vibrational modes of ZnO due to N incorporation, remarkably H substituting at O site and subsequently causing the passivation in N:ZnO nanoparticles, were detected through FTIR analysis. Finally, the effect of the nano-size of crystallite and gradual prominence of N into ZnO lattice due to increase of N doping concentration in prepared nanoparticles was meticulously expatiated though µRS analysis.

【 授权许可】

Unknown