Enhanced Light Emitting in CdTe Type (II)-SWNT Composite Diodes


  • Adam Watts (a) British Institute of Technology & E-commerce, Avicenna House, 258-262 Romford Road,London E7 9HZ,
  • A Waheed (a) British Institute of Technology & E-commerce, Avicenna House, 258-262 Romford Road,London E7 9HZ
  • M. Green Department of Physics, King’s College, Strand, London WC2R 2LS


We in this work have studied the effects of single-wall nanotube (SWNT) concentrations with carboxyl acid surface group on the luminance properties of (CdS/ZnS shell/shell Type II) capped CdTe Quantum dots (QDs). Carboxylic acid modified carbon nanotubes (CNTs) were used to interact with water-soluble luminescent  mercaptoundecanoic  acid-capped Type (II) CdTe QDs. The performance of CdTe type (II) QD  light emitting diodes in luminance has been demonstrated by the improvement of doping carboxylic modified carbon nanotubes. This may be due to the chemical interaction bonding between the carboxylic acid modified CNTs  and the  CdTe type( II) QDs. The effects of size of CNT, doping and crystallization of CNT have been investigated. Here we report the effects of doping on current density, luminance and current efficiency. Suitability of  SWNT to improve the performance of LED as against multi-wall nanotude ( MWNT) has been discussed.



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How to Cite

Watts, A., Waheed, A., & Green, M. (2014). Enhanced Light Emitting in CdTe Type (II)-SWNT Composite Diodes. Asian Journal of Applied Sciences, 2(4). Retrieved from https://ajouronline.com/index.php/AJAS/article/view/1164