Organic solar cell device and preparation method thereof

Abstract

The invention discloses an organic solar cell device and a preparation method thereof. The organic solar cell device comprises the components of an anode electrode layer, an anode interface modifying layer, a light active layer, a cathode interface modifying layer and a cathode electrode layer. The anode interface modifying layer and the cathode interface modifying layer are made of the same material which is a polymer that is represented by a formula I. In the formula I, A is a random material selected from sulfonic acid group, sodium sulfonate group, potassium sulfonate group, lithium sulfonate group, ammonium sulfonate group, sulphonylamino, carboxylic acid group, carboxylic acid ester group, sodium carboxylate group, potassium carboxylate group, lithium carboxylate group, ammonium carboxylate group and amide; R is an alkyl with 1-12 carbon atoms; Ar is a random member selected from the following unsubstituted or substituted group: single-ring arylene, double-ring arylene, three-ring arylene, arylene with more rings, single-ring heteroarylidene, double-ring heteroarylidene, three-ring heteroarylidene, heteroarylidene with more rings, and a group which is composed of 2-6 arylenes which are connected through single bonds; wherein n is selected from 2-500. The organic solar cell device and the preparation method have advantages of simplifying an optimization process and a manufacture process for the material of the interface modifying layers, and reducing the synthesis cost of the material.

Description

technical field [0001] The invention relates to an organic solar cell device and a preparation method thereof, in particular to a polymer solar cell device and a preparation method thereof. Background technique [0002] Solar energy is a green, non-polluting, inexhaustible and inexhaustible clean energy. The development and utilization of solar energy is the most promising means to solve the energy crisis. Compared with inorganic silicon solar cell materials, polymer solar cells are thin-film all-solid-state solar cells, which have the advantages of light weight, low cost, compatible with flexible substrates, and easy large-area preparation. In recent years, bulk heterojunction solar cells based on conjugated polymers have become a new research hotspot. After just a decade of development, their highest energy conversion efficiency has reached 10%, showing a very bright commercial prospect. Organic solar cells mainly include five components: anode, anode interface modificat...

AI Technical Summary

Problems solved by technology

However, although the research and development of the anode and cathode interface modification materials are very rapid at this stage, there are still big problems in the design of the device structure: the materials of the anode interface modification layer and the cathode interface modification layer need to be screened separately. Different materials with very different structures, and through continuous testing and optimization, the best two materials will be used in the same device in the end, so that the device can reach an optimal working condition

This experimental method not only makes the preparation process of the device cumbersome and complicated, but also, when the matching degree of the two selected interface modification layer materials is not high, the working efficiency of the device will be greatly reduced, and even the device will not work.

Images