Optical Properties of Lateral InGaAs Quantum Dot Molecules Single- and Bi-Layers

  • Songphol Kanjanachuchai
  • Nirat Patanasemakul
  • Natapong Thongkamkoon
  • Nitidet Thudsalingkarnsakul
  • Naparat Siripitakchai
  • Pornchai Changmoang
  • Supachok Thainoi
  • Somsak Panyakeow
Chapter
Part of the Lecture Notes in Nanoscale Science and Technology book series (LNNST, volume 14)

Abstract

Growth of InGaAs nanostructures by molecular beam epitaxy using partial-cap and regrowth technique results in an ensemble of lateral quantum dot molecules (QDMs). Each QDM comprises a large, central quantum dot and several small, satellite quantum dots which emit at different energies and exhibit qualitatively different optical behaviors. This chapter reviews, explains, and discusses the various fundamental aspects of lateral QDM single layers: the nucleation mechanism, the photoluminescent spectra, and the unique bimodal optical characteristics. The chapter ends by demonstrating the usefulness of lateral QDM bi-layers as a promising broadband near-infrared material.

Keywords

Crystallization Anisotropy Recombination Arsenic Coherence 

Notes

Acknowledgments

AFM data analyses are performed using Gwyddion. This work is supported by Thailand Research Fund (RSA5580015, DPG5380002); Nanotec; Integrated Innovation Academic Center (IIAC), Chulalongkorn University Centenary Academic Development Project; and the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission (CU56-EN09).

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Songphol Kanjanachuchai
    • 1
  • Nirat Patanasemakul
    • 1
  • Natapong Thongkamkoon
    • 2
  • Nitidet Thudsalingkarnsakul
    • 1
  • Naparat Siripitakchai
    • 1
  • Pornchai Changmoang
    • 1
  • Supachok Thainoi
    • 1
  • Somsak Panyakeow
    • 1
  1. 1.Semiconductor Device Research Laboratory, Department of Electrical Engineering, Faculty of EngineeringChulalongkorn UniversityBangkokThailand
  2. 2.International School of Engineering, Faculty of EngineeringChulalongkorn UniversityBangkokThailand

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