Investigation of Dye Dopant Influence on Electrooptical and Morphology Properties of Polymeric Acceptor Matrix Dedicated for Ternary Organic Solar Cells

Abstract

The publication presents the results of investigations of the influence of dye dopant on the electrooptical and morphology properties of a polymeric donor:acceptor mixture. Ternary thin films (polymer:dye:fullerene) were investigated for potential application as an active layer in organic solar cells. The aim of the research is to determine the effect of selected dye materials (dye D131, dye D149, dye D205, dye D358) on the three-component layer and their potential usefulness as an additional donor in ternary cells, based on P3HT donor and PC71BM acceptor. UV–vis spectroscopy studies were performed, and absorption and luminescence spectra were determined. Ellipsometry parameters for single dye and ternary layers have been measured. The analyses were performed using the Raman spectroscopy method, and the Raman spectra of the mixtures and single components have been determined. Organic layers were prepared and studied using scanning electron microscope and atomic force microscope. For dyes, ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy studies were carried out and the ternary system was presented and analyzed in terms of energy bands.

CdSe/ZnS quantum dots as a booster in the active layer of distributed ternary organic photovoltaics

“…Raman spectra for the mixtures considered are shown in Figure 8 . Because the intensity of the P3HT peaks is much higher than that of the PCBM peaks, only the P3HT peaks are visible in the mixture [ 50 ]. It can be seen that for the reference, the layer shows an additional peak at 1,468 cm −1 .…”

Composites of Betalain Dye and Wide-Energy Gap Polymers for Semitransparent Organic Solar Cells

“…Beside the surface defects, the dye molecules homogenously dispersed in the binary matrix [36]. Moreover, upon inserting the dye molecules into P(TRI-co-TER): PINDOLE and P(TRI-co-DISULF): PINDOLE, respectively , a rough surface with a newly domain were formed for the dye molecules [35,37].…”

Fabrication and Characterization of Bifacial Dye‐Sensitized Solar Cells Utilizing Indoline Dye with Iodine‐ and Cobalt‐Based Redox Electrolytes

“…To construct the energy band diagram, the HOMO and the LUMO energy levels of the dye, D205 are taken from the report by Lewinska et al [28] The CB energy level of TiO 2 was considered to be À4.00 eV, and the redox energy level of the I À /I 3 À redox electrolyte was considered to be À4.90 eV, based on earlier reports. [29] At the same time, the redox potential of Co(bpy) 2þ/3þ redox couple was taken to be 0.57 V versus NHE or À5.00 eV with respect to the energy from vacuum level, based on a previous report. [30] It is evident from the energy band diagram in Figure 3 that the dye D-205 exhibits and excellent energetic cascade with respect to the semiconductor and both the redox electrolyte, indicating an efficient device functioning.…”