Room-temperature dual-wavelength lasing from single-nanoribbon lateral heterostructures

J Am Chem Soc. 2012 Aug 1;134(30):12394-7. doi: 10.1021/ja3050458. Epub 2012 Jul 19.


Nanoscale dual-wavelength lasers are attractive for their potential applications in highly integrated photonic devices. Here we report the growth of nanoribbon lateral heterostructures made of a CdS(x)Se(1-x) central region with epitaxial CdS lateral sides using a multistep thermal evaporation route with a moving source. Under laser excitation, the emission of these ribbons indicates sandwich-like structures along the width direction, with characteristic red emission in the center and green emission at both edges. More importantly, dual-wavelength lasing with tunable wavelengths is demonstrated at room temperature based on these single-nanoribbon heterostructures for the first time. These achievements represent a significant advance in designing nanoscale dual-wavelength lasers and have the potential to open up new and exciting opportunities for diverse applications in integrated photonics, optoelectronics, and sensing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cadmium Compounds / chemistry*
  • Lasers
  • Nanotubes, Carbon / chemistry*
  • Nanotubes, Carbon / ultrastructure*
  • Optics and Photonics / instrumentation
  • Selenium Compounds / chemistry*
  • Temperature


  • Cadmium Compounds
  • Nanotubes, Carbon
  • Selenium Compounds
  • cadmium selenide