Synthesis and Characterization of 4-phenyldiazenylnaphthalen-1-ol as a Sensitizer for Dye-Sensitized Solar Cells (DSSCS)
Keywords:
Azo dyes, DSSC, sensitizers, recrystallization, characterization, solar energyAbstract
The focus of this research is to synthesize and characterize 4-phenyldiazenylnapthalen-1-ol and analyse its optical properties as a sensitizer in Dye-Sensitized Solar Cells (DSSCs). The compound was synthesized and purified by recrystallization. The compound was characterized by an electrothermal melting point apparatus, TLC, UV-Vis Spectroscopy, and Fourier Transform Infrared Spectrometry. The results of the instrumentational analysis of the synthesized compound was compared to that of the industrial standard, inorganic ruthenizer 535-bisTBA (N719) dye. The optical band gap of 4-phenyldiazenylnapthalen-1-ol was calculated as 1.95 eV as compared to the literature value of 1.91 eV of the standard N719 dye. The IR spectrum of the compound also showed an indication for N=N stretch for azo bond at 1465 cm–1. Comparing IR spectra of 4-phenyldiazenylnaphthalen-1-ol to that of the standard N719 dye, the presence of OH group strong signal around 3326 cm–1 is necessary as a feature for dye sensitizers having good anchorage to the TiO2 surface for better device performance.
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