The Quantum Dot Intermediate Band Solar Cell

  • Colin R. Stanley
  • Corrie D. Farmer
  • Elisa Antolín
  • Antonio Martí
  • Antonio Luque
Part of the Springer Series in Optical Sciences book series (SSOS, volume 165)


This chapter concentrates on the development of the intermediate band solar cell (IBSC) using InAs quantum dots (QD) embedded within an (Al,Ga)As single p-n junction. The growth and optimisation of the QD structures using molecular beam epitaxy (MBE) are discussed, and issues related to the manufacture of solar cell die for concentrator photovoltaic system applications are addressed. Advanced characterisation techniques have been employed to compare the performance of QD-IBSCs against reference (un-modified) single junction (Al,Ga)As cells, and results from these studies are assessed. It is concluded that the main operating principles of the IBSC have been demonstrated, including the generation of photo-current by the absorption of two sub-bandgap photons, and voltage preservation when thermal and/or tunnelling-assisted escape from the intermediate band are suppressed. However, efficiencies in excess of those for un-modified (Al,Ga)As reference cells have not yet been achieved.


Molecular Beam Epitaxy Reflection High Energy Electron Diffraction Molecular Beam Epitaxy Growth Reflection High Energy Electron Diffraction Pattern Quantum Efficiency Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work has been supported by the European Commission through grant number 211640, IBPOWER and NANOGEFFES (ENE2009-14481-C02-01) funded by the Spanish National Programmes. The authors are indebted to numerous colleagues at the University of Glasgow and the Universidad Politécnica de Madrid for their contributions to the work described in this chapter.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Colin R. Stanley
    • 1
  • Corrie D. Farmer
    • 2
  • Elisa Antolín
    • 3
  • Antonio Martí
    • 3
  • Antonio Luque
    • 3
  1. 1.School of EngineeringUniversity of GlasgowGlasgowUK
  2. 2.School of EngineeringUniversity of GlasgowGlasgowUK
  3. 3.Instituto de Energía SolarUniversidad Politécnica de MadridMadridSpain

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