研究目的
Investigating the photovoltaic applications of small azomethine molecules (BP-DPM and BP-DPE) synthesized for organic solar cells, including their characterization and the effect of energy transfer on photovoltaic performance.
研究成果
The study successfully synthesized and characterized BP-DPM and BP-DPE for photovoltaic applications, demonstrating their potential as additives in organic solar cells. The presence of different central linkers in the molecules influenced their photovoltaic performance, with BP-DPE showing better efficiency due to the oxygen atom facilitating continuous electron transfer. The research highlights the importance of molecular structure in the performance of organic solar cells and suggests further optimization of blend ratios, solvent choice, and film thicknesses for improved efficiency.
研究不足
The study is limited by the fabrication of devices in an ambient atmosphere without postproduction treatment, which may affect the photovoltaic performance compared to devices fabricated in a controlled environment.
1：Experimental Design and Method Selection:
Synthesis of BP-DPM and BP-DPE by condensation of appropriate arylaldehydes and arylendiamines. Characterization using Fourier-transform infrared spectroscopy, 1H NMR, 13C NMR, and liquid chromatography–mass spectrometry. Investigation of photovoltaic performance through absorption and emission spectra.
2：Sample Selection and Data Sources:
BP-DPM and BP-DPE molecules synthesized for the study.
3：List of Experimental Equipment and Materials:
PerkinElmer Lambda 25 UV-Vis spectrometers, Jobin Yvon Horiba FluoroMax-P fluorescence spectrophotometer, NICOLET iS10 Fourier-transform infrared spectroscopy (FTIR) spectrometer, Bruker Avance III 500 MHz spectrometer, Agilent 1200 Infinity HPLC-Agilent 6460 Jet-Stream TripleQuad spectrometer, Electrothermal 9100 Melting Point Apparatus.
4：Experimental Procedures and Operational Workflow:
Synthesis of azomethine molecules, characterization, fabrication of organic solar cells, and measurement of photovoltaic performance.
5：Data Analysis Methods:
Density functional theory calculations (DFT/B3LYP/6-31G(d)) for molecular geometry optimization, HOMO-LUMO energies, electronic structures, and molecular electrostatic potential surfaces.
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