A Performance Model of Six New Organic Small Molecule Photovoltaic Materials

Abstract

This article in view of the Compound 1 to Compound 6 (six) kinds of organic small molecule photovoltaic material preparation, thermal properties, UV-vis absorption spectroscopy, fluorescence spectroscopy, electrochemical properties and its ontology with PC60BM heterostructure of solar cell device is analyzed, in order to explore the performance differences of different organic small molecules, provide theoretical guidance for the preparation and development of photovoltaic materials. The results show that increase in the compound rigid structure helps to improve its thermal stability. The UV absorption spectra and fluorescence spectra of organic photovoltaic small molecules are mainly determined by receptor units, when the receptor cell contains three different kinds of donor cells of organic small molecule optical performance difference is not very big, and the UV absorption spectrum of DPP series is wider than that of the benzothiadiazole series. The bandgap size of the six compounds containing triphenylamine depends mainly on the narrow band gap in the small molecule; the triphenylamine is stronger than the carbazole hole transport capacity and fluorene, but its solubility is relatively poor; the DPP series of optical performance and benzothiadiazole is better, but the PV performance is not as benzothiadiazole series.