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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:41 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Solid State Physics and Materials Science
Title:
THE INFLUENCE OF CUPC NOPARTICLES ADDING ON THE PERFORMANCES OF THE PHOTOVOLTAIC CELLS BASED ON P3HT:PC71BM (1:1) POLYMERIC BLEND
Authors:
Maria-Cristina BALASIN1, Maria Luiza STINGESCU1,2, Elena-Isabela BANCU1,2, Felicia IACOB1, Vlad Andrei ANTOHE1,3, Sorina IFTIMIE1, Stefan ANTOHE1,4
*
Affiliation:
1University of Bucharest, Faculty of Physics, Magurele, 077125, Romania
2National Institute for Laser, Plasma, and Radiation Physics, Magurele, 077125, Romania
3Université catholique de Louvain (UCLouvain), Institute of Condensed Matter and Nanosciences (IMCN), Place Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
4Academy of Romanian Scientists (AOSR), Ilfov Street 3, 050045 Bucharest, Romania
E-mail
Corresponding author: santohe@solid.fizica.unibuc.ro
Keywords:
Keywords: P3HT, PC71BM, CuPC, PEDOT:PSS, organic photovoltaic cells
Abstract:
In this study, we report the fabrication and characterization of an innovative photovoltaic cells prepared by adding small molecules of copper phthalocyanine (CuPC) either into holes transporter layer (HTL) or to the active layer. The active layer of the conventional photovoltaic cell was grown as a 1:1 ratio mixture between a conductive polymer, poly(3-hexylthiophene-2,5-diyl (P3HT) as donor, and a fullerene derivative, [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as acceptor. The contribution of the CuPC adding was investigated by its participaton to photogeneration into the ternary absorber layer P3HT:PC71BM + CuPC or by the improvement of the hole transport properties as blending with the (3,4-etylenedioxylenethiophene):polystyrene sulphonic acid (PEDOT:PSS), used frequently as conventional hole transport layer (HTL). The individual layers PEDOT:PSS, P3HT:PC71BM and customized layers PEDOT:PSS + CuPC (75:25, wt%), P3HT:PC71BM + CuPC at three different concentrations: 75:25, 50:50, 25:75 wt%, were deposited by spin-coating, at room temperature. The top electrode of the cell into superstrate structures, was indium tin oxide (ITO) coated optical glass, and the back contact (cathode), was an aluminum thin film, deposited by thermal vacuum evaporation. The electrical and photo-electrical properties of the prepared structures were investigate by the measurements of the Current-Voltage characteristics in dark and at illumination, in AM 1.5 conditions (100 mW/cm2), respectively. The typical parameters measured as photoelement such as: external quantum efficiency (EQE), short-circuit current (ISC), open circuit photovoltage (UOC), fill factor (FF), and power conversion efficiency (PCE) were calculated and discussed in terms of a conventional ITO/PEDOT:PSS/P3HT:PC71BM(1:1)/Al structure. The main conclusion of this study is that the adding of nanoparticles of CuPC have a significant contribution to the absorption and photogeneration processes, broadening the absorption spectrum to shorter wavelengths and accentuating the characteristic peaks of P3HT around 600 nm.
References:
[1] Antohe, S; Iftimie, S; Hrostea, L; Antohe, VA] ; Girtan, M, Thin Solid Films Volume: 642 , 219-23, 2017
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