Now showing items 1-4 of 4

  • Aerosol Flow Homogenization in the Spray Polyphenylene Vinylene Thin Film Deposition 

    Milenkov, Viktor; Vrchotová, Jana; Zhivkov, Ivaylo; Yordanov, Rumen S.; Vala, Martin; Mladenova, Daniela; Weiter, Martin (IOP Publishing, 2014-05-15)
    Two different spray deposition (SD) techniques were compared on polyvinylene (MDMO-PPV) used as a model material. SD and homogenized (h-SD) techniques were compared. Films of about 1 micron thickness were prepared by SD ...
  • Morphology versus Vertical Phase Segregation in Solvent Annealed Small Molecule Bulk Heterojunction Organic Solar Cells 

    Kovalenko, Alexander; Pospíšil, Jan; Zhivkov, Ivaylo; Vala, Martin; Weiter, Martin (Hindawi, 2015-10-11)
    The deep study of solvent annealed small molecules bulk heterojunction organic solar cells based on DPP(TBFu)2 : PC60BM blend is carried out. To reveal the reason of the solvent annealing advantage over the thermal one, ...
  • Vacuum deposited Diphenyl-Diketo-Pyrrolopyrrol solar cell structures 

    Georgieva, Galya; Dobrikov, Georgi; Heinrichová, Patricie; Karashanova, Daniela; Dimov, Deyan; Vala, Martin; Weiter, Martin; Zhivkov, Ivaylo (IOP Publishing, 2016-04-07)
    In the present paper, DPP(TBFu)2:C60 donor-acceptor composite films were prepared by vacuum co-deposition and the photoelectrical properties of ITO|PEDOT:PSS| DPP(TBFu)2:C60|Al solar cell samples were investigated.
  • Vacuum Deposited Diphenyl-Diketo-Pyrrolopyrroles Structures with Photoelectrical Application 

    Georgiev, Yavor; Zhivkov, Ivaylo; Angelov, George; Takov, Tihomir; Přikryl, Radek; Stříteský, Stanislav; Vrchotová, Jana; Weiter, Martin (IOP Publishing Ltd, 2014-05-15)
    ITO|composite|Al structures with active DPP-C60 composite films (ratio 60:40 mass %) of about 100 nm thicknesses were prepared. The surface morphology of the films was studied by SEM imaging, which revealed uniform films ...