Pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in dye-sensitized solar cell

Abstract

The invention provides a pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in a dye-sensitized solar cell. The pure organic dye belongs to molecules of a D-phi-A structure. Segments of a donor, a phi conjugated system and a receptor are properly adjusted and controlled respectively to form the pure organic dye with wide spectral response and high molar extinction coefficient. The absorption spectrum of the pure organic dye is over 570 nanometers already close to the absorption of ruthenium dye; and when the pure organic dye is applied to the dye-sensitized solar cell, the photoelectric conversion efficiency of more than 10 percent is obtained, so the dye is the current most efficient and stable pure organic dye.

Description

technical field

[0001] The invention relates to pure organic dyes containing different kinds of heterocycles and their derivatives' conjugated units and their application in dye-sensitized solar cells. Background technique

[0002] Since the beginning of the 21st century, the problems of resource shortage and environmental pollution have become increasingly prominent, and people have made various attempts to find energy sources that can replace traditional fossil fuels to solve the looming energy crisis. Among the many renewable energy sources, solar energy is undoubtedly the most ideal clean energy, and photoelectric conversion through solar cells is one of the main ways for human beings to utilize solar energy. Among solar cells, silicon solar cells occupy the main part of solar cells due to their high conversion rate and mature technology. However, silicon solar cells have high production costs and difficulties in improving cell efficiency, and raw materials are expensive...

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