The origin of additional modes in Raman spectra of N+-implanted ZnO

Jing, Yu; Xing, Huaizhong; Zhao, Qiang; Mao, Huibing; Shen, Y.R.; Wang, Jiqing; Lai, Zongsheng; Zhu, Z. Q.

doi:10.1016/j.ssc.2006.04.019

Cited by 36 publications

(17 citation statements)

References 13 publications

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“…4 are attributed to the Raman A 1 (LO) phonon scattering and its corresponding overtones. No disorder-induced modes due to vacancies [29] or local vibrational modes at transition metal impurities [30,31] are displayed in the figure. Moreover, in the considered frequency range the Raman spectra exhibit no secondary phases or further additional modes specific for residual dopants.…”

Section: Resultsmentioning

confidence: 99%

Optical Investigation of ZnO Nanowires

et al. 2010

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In this study we report the application of synchrotron X-ray fluorescence, photoluminescence and Raman scattering techniques to the analysis of the incorporation of impurities in unintentionally doped ZnO nanowires. Highly ordered one-dimensional ZnO arrays were fabricated by an oxidation process of Zn metal electrodeposited in nanoporous anodic alumina template. X-ray fluorescence data show the contribution of residual elements into the ZnO nanowires growth. A rough analytical quantification of the main light and heavy chemical contents derives impurity concentrations below 1%. The optical efficiency of ZnO nanowires is strongly affected by non-radiative centers up to temperatures as low as 100 K. The photoluminescence was found to be totally dominated by optical transitions associated with the anodic alumina template. Finally, the Raman scattering provides no evidence of local vibrational modes or secondary phases, but it shows the unambiguous signature of the ZnO hexagonal phase.

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Section: Resultsmentioning

confidence: 99%

Optical Investigation of ZnO Nanowires

et al. 2010

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“…The addition of N atoms to ZnO can cause the appearance of the localized vibration modes (LVM) [22][23][24][25][26]. The LVM frequencies can be estimated using a simple function [27]: The work function is the minimum energy that is needed to remove an electron from a solid to a point outside the solid surface immediately or to move an electron from the Fermi level into vacuum [28].…”

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Nitrogen‐doped ZnO obtained by nitrogen plasma treatment

Wang

Zhao

Wang

et al. 2015

Physica Status Solidi (a)

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We carried out a nitrogen plasma treatment process to obtain N-doped ZnO single crystal. The treated sample showed an acceptor related emission located at 3.354 eV when excited by a 325-nm He-Cd laser at 85 K. Raman spectra revealed the formation of a bond between Zn and N atoms. The surface work function indicated increasing of hole concentration of the N-plasma-treated ZnO. By constructing a ZnO-based homojunction, the I-V curve displayed perfect rectification performance.

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“…The vibration modes observed around 500 1 and 520 cm À 1 are related to defect activated Raman scattering phonon modes (DARS). They might be associated with oxygen and zinc vacancies, interstitials and also other defects induced by TM doping [12,13]. The oxygen interstitials, presumably located in octahedral positions, can be generated as a result of charge compensation upon introducing transition metal dopants in higher valence state into ZnO host lattice.…”

Section: Resultsmentioning

confidence: 99%