研究目的
Investigating the effect of organic dyes and polypyrrole on the efficiency of dye-sensitized solar cells.
研究成果
To the best of our knowledge we have for the first time produced biodegradable organic dyes 5NSA by solution method. Based on the analysis of structures, Morphology, spectral and Electrochemical properties of 5NSA, the role of nitro or aldehyde (CHO) and amino group (NH2) in 5NSA enlarged the distance between electron donor group and semiconductor surface, and decreased the time scale of the electron injection rate, resulted in giving lower conversion efficiency. This indicates conjugate bridge in dye sensitizer is very important to improve the performance of DSSC.
研究不足
The role of nitro or aldehyde (CHO) and amino group (NH2) in 5NSA enlarged the distance between electron donor group and semiconductor surface, and decreased the time scale of the electron injection rate, resulted in giving lower conversion efficiency.
1：Experimental Design and Method Selection:
Polypyrrole films were coated on conductive glass by electrochemical deposition. Two new organic dyes based on aniline and substituted 5-Nitrosalicylaldehyde with aniline were prepared and used as sensitizers in dye-sensitized solar cells.
2：Sample Selection and Data Sources:
5 Nitro Salicylaldehyde and aniline were subjected to solution at a temperature of 303 k for a duration of 1 hr to form the nanocomposite.
3：List of Experimental Equipment and Materials:
FT-IR (Bruker optics), Spectrophotometer model UV–Visble NIR JASCO UV 670 Series, SUPERA 55 CARL ZEISS FESEM, X-Ray diffraction (XRD) patterns were obtained employing a (SUPRA 55)-CARL ZESIS, GERMANY using CUKa radiation.
4：Experimental Procedures and Operational Workflow:
The optical absorption measurements in wavelength range from 200 to 1100 nm were carried out. Surface morphological study was made by using FESEM.
5：Data Analysis Methods:
The composition and structure of this composite was characterized by FT-IR, UV-Spectroscopy, Cyclic Voltammetry, XRD and Field Emission Scanning Electron Microscopy.
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