Mechanism of Photoluminescence from a-C ∶ N ∶ H Nanotips

WANG Bi-ben; DANG Chun

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Mechanism of Photoluminescence from a-C ∶ N ∶ H Nanotips

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- Mechanism of Photoluminescence from a-C ∶ N ∶ H Nanotips
- Chinese Journal of Luminescence Vol. 31, Issue 3, Pages: 400-404(2010)
- 作者机构：
  
  1. 重庆理工大学光电信息学院重庆,400054
  2. 淮阴工学院计算科学系,江苏淮安,223001
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31;O484.4+1
- Received：11 July 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2010，
  
  Published：30 June 2010
- 稿件说明：
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WANG Bi-ben, DANG Chun. Mechanism of Photoluminescence from a-C ∶ N ∶ H Nanotips[J]. Chinese journal of luminescence, 2010, 31(3): 400-404.
DOI：

WANG Bi-ben, DANG Chun. Mechanism of Photoluminescence from a-C ∶ N ∶ H Nanotips[J]. Chinese journal of luminescence, 2010, 31(3): 400-404. DOI：

摘要

用CH

和NH

为反应气体

利用等离子体增强热丝化学气相沉积在沉积有碳膜的Si衬底上制备了a-C ∶ N ∶ H纳米尖端

并用扫描电子显微镜和微区Raman光谱仪对碳膜和纳米尖端进行了表征。结果表明:Raman谱中含有与碳和氮相关的峰

且纳米尖端的Raman谱比碳膜的Raman谱有很强的荧光背景。Raman谱中的峰说明沉积的碳膜和纳米尖端是a-C ∶ N ∶ H薄膜和a-C ∶ N ∶ H尖端。a-C ∶ N ∶ H纳米尖端的Raman谱中强荧光背景的产生表明其在激发光源照射的过程中发射了强荧光

对a-C ∶ N ∶ H纳米尖端产生强荧光的机理进行了探讨。

Abstract

a-C ∶ N ∶ H nanotips were fabricated on the Si substrate deposited with carbon film by plasma-enhanced chemical vapor deposition using methane

hydrogen and ammonia as the reaction gases. The carbon film and the nanotips were characterized by scanning electron microscopy and micro-Raman spectroscopy and the results indicated that the Raman spectra have the peaks related to carbon and nitrogen and the photoluminescence background in the Raman spectrum of the carbon nanotips is stronger than that of the carbon film. The peaks in the Raman spectra illustrates that the deposited carbon film and the nanotips are a-C ∶ N ∶ H film and a-C ∶ N ∶ H nanotips

respectively. The strong photoluminescence background in the Raman spectrum of the a-C ∶ N ∶ H nanotips indicates that the a-C ∶ N ∶ H nanotips produce the strong photoluminescence when the a-C ∶ N ∶ H nanotips are irradiated by the excitation of 514.5 nm Ar laser. The mechanism which the a-C ∶ N ∶ H nanotips produce strong photoluminescence was analyzed.

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