Current carrier transmtiting material with high-effect and balancing electronic cavity transmitting performance

Abstract

The material on the embedded conjugated macromolecule is connected with the n-type link, which possesses excellent transmitting effect for the electron, and the p-type link, which possesses excellent transmitting effect for the positive hole to form the completed electronic transmitting channel and the positive hole transmitting channel. Compared with the existed p-n bipolar conjugate copolymer, the new material possesses the excellent infusing and transmitting characteristic for the electron and the positive hole.

Description

technical field [0001] The invention belongs to the technical field of photoelectric functional materials, and in particular relates to a new type of carrier transport material which has balance for both electrons and holes and has high-efficiency transport performance. Background technique [0002] The unprecedented development of information technology marks that human society has entered the era of information science. The integration of inorganic semiconductors has approached its physical limit. The emergence of organic semiconductors and organic photoelectric functional materials, as well as the establishment and development of organic semiconductor theory, will fundamentally change the structure of information science and industry, and its significance will be no less than that of inorganic semiconductors. The information revolution triggered by the birth and development of theory. Taking organic / polymer electroluminescent materials and devices as an example, as an im...

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Problems solved by technology

However, most of these copolymers are random or alternating copolymers of p-type monomers and n-type monomers, and the electron transport and hole transport effects are still not balanced enough.

[0006] The reason is mainly due to the fact that the n-type segments or blocks on the molecular chain of the currently prepared materials, whether they are random or alternating structure copolymers or p-n block copolymers with a regular structure, are relatively sensitive to electron transport. If the effect is good, it must be unfavorable to hole transport. On the contrary, if the p-type segment or block has a good effect on hole transport, it must be unfavorable to electron transport. This will inevitably make it impossible for the entire molecule to simultaneously and efficiently transport electrons and electrons. holes, even when balanced, at the expense of reduced efficiency

To put it figuratively, no matter for electrons or holes in the whole molecule, one section is a highway, while the other section is a narrow path. By adjusting the composition ratio of these two sections, although the two sections can run to Meet in the middle (recombination), but it must be at the expense of efficiency

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