Abstract
A polyazomethine (PPV-PAZ-DMB) containing vinylene and aliphatic side chains was synthesized by polycondensation method. The structure of polymer was characterized by means Fourier transform infrared (ATR-FTIR), proton and carbon nuclear magnetic resonance (1H, 13C NMR) spectroscopy and the results show an agreement with the proposed structure. Photovoltaic properties of PPV-PAZ-DMB were studied by constructing bulk heterojunction (BHJ) solar cells with the architecture ITO/PEDOT:PSS/PPV-PAZ-DMB:PCBM/Al, where ITO: indium tin oxide, PEDOT:PSS: poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). Photovoltaic parameters were analyzed taking into account amount of [6,6]-phenyl C61 butyric acid methyl ester (PCBM) added to PPV-PAZ-DMB and presence of 10-camphorsulfonic acid (CSA) in active layer. With the weight ratio PPV-PAZ-DMB:PCBM of 1:3 and the presence of CSA, the power conversion efficiency (PCE) of the device reached 0.32% with open circuit voltage Voc=0.47V, short circuit current density Jsc=2.91mA/cm2 and fill factor (FF) 0.25 under simulated 100mW/cm2 AM 1.5G irradiation. It is showed that the PCE of device with CSA was 40 times higher than that of the device without CSA. Devices were additionally tested by electrochemical impedance spectroscopy. An influence of CSA as a dopant on absorption wavelengths, energy gap and HOMO-LUMO levels was investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
