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Functional Optoelectronic Nanomaterials

Prof. Dr. Gerasimos Konstantatos

    Activities:

We employ advances in nanoscience and we transform them into nanotechnology in solving real-world problems that current technology cannot address or do so at an affordable cost for the benefit of the society. We are doing so by assembling a group of physicists, chemists and engineers to tackle complex, interdisciplinary problems. We focus on novel functional nanomaterials, nanostructures and devices for optoelectronics and renewable energy applications.

Our main scope is on the development of low-cost, high-efficiency solar cells employing nanostructured materials of low toxicity and high abundance to address the TW challenge. We also exploit optical phenomena that emerge in the nanoscale to break long-standing trade-offs in solar cells and photodetectors. We study optoelectronically active plasmonic structures that may allow for ultra-thin low cost solar cells and ultra-sensitive photodetectors.

    Selected Publications List:
  • A. K. Rath, M. Bernechea, L. Martinez, F. P. Garcia de Arquer, J. Osmond, G. Konstantatos, “Solution-processed inorganic bulk nano-heterojunctions and their application to solar cells”, Nature Photonics, 6, 529-534, 2012
  • G. Konstantatos, M. Badioli, L. Gaudreau, J. Osmond, M. Bernechea, F. P. Garcia de Arquer, F. Gatti, F. H. L. Koppens, “Hybrid graphene–quantum dot phototransistors with ultrahigh gain”, Nature Nanotechnology,7, 363-368, 2012
  • G. Konstantatos, E.H. Sargent, “Nanostructured materials for photon detection”, Nature Nanotechnology 5, 391–400,2010
  • Jason Clifford, G. Konstantatos, Sjoerd Hoogland, Larissa Levina, Edward Sargent, “Fast, Sensitive, Spectrally-Tunable Solution-Processed Photodiodes”, Nature Nanotechnology, 4, 40-44, 2009.
  • G. Konstantatos, Jason Clifford, Larissa Levina, Edward H. Sargent, “Sensitive Solution-processed Visible-Wavelength Photodetectors”, Nature Photonics, 1, 531-534, 2007.
  • G. Konstantatos, Ian Howard, Armin Fischer, Sjoerd Hoogland, Jason Clifford, Ethan J. D. Klem, Larissa Levina, Edward H. Sargent, “Ultrasensitive solution-cast quantum dot photodetectors”, Nature, 442, 180-183, 2006.
  • S. A. McDonald, G. Konstantatos, S. Zhang, P. W. Cyr, E. J. D. Klem, L. Levina, E. H. Sargent, “Solution-processed PbS quantum dot infrared photodetectors and photovoltaics”, Nature Materials, 4(2), 138-142, 2005.
    Projects:
  • Plasmonically-enhanced-sensitivity colloidal quantum dot photodetectors. Collaborators: Romain Quidant
  • Solution-processed solar cells based on non-toxic, high abundance colloidal nanocrystals
  • Intersubband-transition-based colloidal quantum dot detectors and emitters

    Available Resources:
  • UV-VIS-NIR spectrophotometer
  • FTIR spectrometer
  • Solar simulator
  • Spectral EQE measurement setup
  • Probe-station and semiconductor parameter analyzer
  • Optoelectronic device characterization equipment
  • Wet chemistry synthesis and processing lab

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Functional Optoelectronic Nanomaterials

Prof. Dr. Gerasimos Konstantatos

    Former Group Members
  • Fiona Jean Beck, Postdoc Researcher
  • María Bernechea, Research Fellow
  • Yiming Cao, Postdoc Researcher
  • Silke Luzia Diedenhofen, Postdoc Researcher
  • Francisco Pelayo García, PhD Student
  • Dominik Kufer, PhD Student
  • Tania Lasanta, Research Engineer
  • Helmut Mäckel, Research Fellow
  • Beatriz Martín, Visiting Scientist
  • Luis Martínez, PhD Student
  • Agustín Mihi, Research Fellow
  • Nichole Cates Miller, Postdoc Researcher
  • Nosipho Moloto, Visiting Scientist
  • Arup Kumar Rath, Postdoc Researcher
  • David Tan So, PhD Student
  • Óscar Vázquez, Postdoc Researcher
  • Guillem Xercavins, Research Engineer
  • Xiaojie Yang, Postdoc Researcher

Functional Optoelectronic Nanomaterials

Prof. Dr. Gerasimos Konstantatos

    PhD Theses
  • Copper indium sulfide colloidal quantum dot solar cells D. So
  • Photodetectors based on Llow-dimensional materials and hybrid systems D. Kufer
  • Plasmonic hot-carrier optoelectronics F. P. García de Arquer
  • N-type bismuth sulfide colloidal nanocrystals and thir applications to solution-processed photovoltaic devices L. Martínez

Functional Optoelectronic Nanomaterials

Prof. Dr. Gerasimos Konstantatos