Triphenylamine fullerene derivative and preparation method and application thereof

Abstract

The invention discloses a triphenylamine fullerene derivative and a preparation method and application thereof. The method comprises the following steps: 1) preparing a triphenylamine iodinated product; (2) preparing chlorinated, fluorinated, ethylated and methoxylated products of triphenylamine; (3) preparing hydroformylated triphenylamine and derivatives thereof; and 4) reacting the obtained triphenylamine and derivatives thereof with N-alkylglycine (N-(2-cyanoethyl) glycine, N-methylglycine, N-ethylglycine and N-benzyl glycine) and C60 under anhydrous and anaerobic conditions to obtain the triphenylamine fullerene derivative. The method has the advantages of simple synthesis method, convenient application, strong operability, cheap and easily available reaction raw materials, and high yield. The application of the triphenylamine fullerene derivative prepared by the method as an electron transport material in a perovskite solar cell can realize convenient preparation of the perovskite solar cell, few hysteresis phenomena, and high device efficiency and stability.

Description

technical field [0001] The invention relates to photovoltaic material technology, in particular to a triphenylamine fullerene derivative and its preparation method and application. Background technique [0002] Energy issues have always been widely concerned by researchers. How to effectively develop and utilize clean and green solar energy has become a hot spot of scientific research. Solar cells mainly include inorganic solar cells, dye-sensitized solar cells, organic solar cells and perovskite solar cells. Among them, perovskite solar cells are favored by scientific researchers due to their excellent photoelectric conversion efficiency, which has set off a wave of research on perovskite solar cells. The research boom of mining solar cells. [0003] Perovskite solar cells are composed of conductive glass substrates, electron transport layers, perovskite layers, hole transport layers, and metal electrodes. The working principle of perovskite solar cells is: when the pero...

AI Technical Summary

Problems solved by technology

As the most typical framework material, titanium dioxide can make perovskite nanocrystals enter the pores of the porous titanium dioxide layer by solution spin coating to form an interconnected absorption layer, which not only plays a supporting role, but also plays a role in transporting electrons. However, the manufacturing process of mesoporous titanium dioxide is complicated and the cost of the device is high; planar heterojunction perovskite solar cells are mainly divided into n-i-p and p-i-n. Titanium dioxide needs to be sintered at a relatively high temperature (>450 °C) under strictly controlled conditions to obtain a conductive phase, which greatly limits the choice of substrate materials, and the preparation process is cumbersome and costly. Oxygen vacancies will be formed under the light, severe hysteresis, device instability and other factors that affect the commercial application of batteries

In the prior art, most of them require high cost to purchase electron transport materials or prepare raw materials. In addition, the preparation methods of related electron transport materials are relatively cumbersome, and the purification of products is difficult, which is not conducive to large-scale application.

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