A kind of p-type doped polymer solar cell and preparation method thereof

Abstract

The invention belongs to the field of electrochemistry, in particular discloses a P type doped polymer solar battery. The P type doping polymer solar battery is of a lamellar structure, the lamellar structure sequentially includes an anode substrate, a P type doped layer, an active layer, an electronic buffer layer and a cathode layer. According to the P type doped polymer solar battery disclosed by the invention, the injection efficiency of a hole is increased in such a way that a neutral P type doped material is used as a hole buffer layer; the corrosion of the hole buffer layer on an anode is effectively prevented, and film thickness can be more accurately controlled; and the cost is reduced, and the purpose of increasing the stability and the energy conversion efficiency of the P type doped polymer solar battery is achieved.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a p-type doped polymer solar cell and a preparation method thereof. Background technique [0002] In 1982, Weinberger et al. studied the photovoltaic properties of polyacetylene and produced the first real solar cell, but the photoelectric conversion efficiency at that time was extremely low (10 -3 %). Immediately afterwards, Glenis and others produced various polythiophene solar cells, but the problems they all faced at that time were extremely low open circuit voltage and photoelectric conversion efficiency. It was not until 1986 that C.W.Tang et al. introduced p-type semiconductor and n-type semiconductor into the double-layer structure device for the first time, which greatly improved the photocurrent. Since then, taking this work as a milestone, organic p-type doped polymerization Bio solar cells are booming. [0003] In 1992, Sariciftci et al. found that there was a pheno...

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Problems solved by technology

[0005] Among them, the transmission and collection of charges directly affect the photoelectric conversion efficiency of the final battery. The collection of charges is mainly realized by injecting electrons and holes from the active layer into the electrodes, and the buffer layer plays a very important role. , because the electron buffer layer is generally a metal compound (such as LiF), it is easy to cause the energy band between the electrode and the active layer to bend, so that the electron injection barrier is lowered, and the electron injection efficiency is easily improved, while the hole buffer layer is generally made of poly3, The aqueous solution of 4-ethyldioxythiophene (PEDOT) and polybenzenesulfonate (PSS), which is an acidic substance, and because polymer solar cells generally use metal semiconductors (such as ITO) as anodes, and then Spin-coat PEDOT solution on it. Therefore, the acidic solution is easy to corrode ITO, which is not conducive to the stability of solar cells and damages the anode. In addition, the preparation process of PEDOT is complicated and the cost is high, which restricts the commercial development in the future.

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