Browsing by Author "Papagiorgis, Panagiotis"

Now showing items 1-7 of 7

    • Article  

      Emission from the stable Blatter radical 

      Karecla, G.; Papagiorgis, Panagiotis; Panagi, N.; Zissimou, Georgia A.; Constantinides, Christos P.; Koutentis, Panayiotis Andreas; Itskos, Grigorios; Hayes, Sophia C. (2017)
      1,3-Diaryl-1,4-dihydro-1,2,4-benzotriazin-4-yls are air stable organic radicals which have been exploited for their interesting magnetic properties. Herein, we present the optical properties of the "parent" radical namely ...
    • Article  

      Emission from the stable Blatter radicalAAA 

      Karecla, G.; Papagiorgis, Panagiotis; Panagi, N.; Zissimou, Georgia A.; Constantinides, Christos P.; Koutentis, Panayiotis Andreas; Itskos, Grigorios; Hayes, Sophia C. (2017)
      1,3-Diaryl-1,4-dihydro-1,2,4-benzotriazin-4-yls are air stable organic radicals which have been exploited for their interesting magnetic properties. Herein, we present the optical properties of the "parent" radical namely ...
    • Article  

      The influence of doping on the optoelectronic properties of PbS colloidal quantum dot solids 

      Papagiorgis, Panagiotis; Stavrinadis, A.; Othonos, Andreas S.; Konstantatos, G.; Itskos, Grigorios (2016)
      We report on an extensive spectroscopic investigation of the impact of substitutional doping on the optoelectronic properties of PbS colloidal quantum dot (CQD) solids. N-doping is provided by Bi incorporation during CQD ...
    • Article  

      Inkjet printing processing conditions for bulk-heterojunction solar cells using two high-performing conjugated polymer donors 

      Hermerschmidt, F.; Papagiorgis, Panagiotis; Savva, Achilleas; Christodoulou, Chris C.; Itskos, Grigorios; Choulis, Stelios A. (2014)
      We report the processing conditions for inkjet-printed active layers of organic photovoltaic (OPV) devices comprising bulk-heterojunction blends of the low bandgap conjugated polymer poly[(4,4′-bis(2-ethylhexyl)dithieno[3,2-b: ...
    • Article  

      Lead halide perovskites and other metal halide complexes as inorganic capping ligands for colloidal nanocrystals 

      Dirin, D. N.; Dreyfuss, S.; Bodnarchuk, M. I.; Nedelcu, G.; Papagiorgis, Panagiotis; Itskos, Grigorios; Kovalenko, M. V. (2014)
      Lead halide perovskites (CH3NH3PbX3, where X = I, Br) and other metal halide complexes (MXn, where M = Pb, Cd, In, Zn, Fe, Bi, Sb) have been studied as inorganic capping ligands for colloidal nanocrystals. We present the ...
    • Article  

      Long-Lived Hot Carriers in Formamidinium Lead Iodide Nanocrystals 

      Papagiorgis, Panagiotis; Protesescu, L.; Kovalenko, M. V.; Othonos, Andreas S.; Itskos, Grigorios (2017)
      The efficient harvesting of hot carrier energy in semiconductors is typically inhibited by their ultrafast thermalization process. Recently, highly promising experiments reported on the slowdown of the intraband relaxation ...
    • Article  

      Size-dependent charge transfer in blends of Pbs quantum dots with a low-gap silicon-bridged copolymer 

      Itskos, Grigorios; Papagiorgis, Panagiotis; Tsokkou, Demetra; Othonos, Andreas S.; Hermerschmidt, F.; Economopoulos, Solon P.; Yarema, M.; Heiss, W.; Choulis, Stelios A. (2013)
      The photophysics of bulk heterojunctions of a high-performance, low-gap silicon-bridged dithiophene polymer with oleic acid capped PbS quantum dots (QDs) are studied to assess the material potential for light harvesting ...