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An organic solar cell based on halogenated graphene quantum dot multi-component blend system

A graphene quantum dot, solar cell technology, applied in organic semiconductor devices, circuits, photovoltaic power generation, etc., can solve problems such as insufficient light absorption, achieve strong synergistic effect, enhance photoelectric conversion efficiency, and prevent agglomeration.

Active Publication Date: 2022-06-07
恒力(厦门)石墨烯科技产业集团有限公司
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Problems solved by technology

However, with the thinning of the active layer, the problem of insufficient light absorption will inevitably occur. It is very necessary and urgent to adopt a reasonable light-harvesting strategy to improve the efficiency of solar cells.

Method used

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] The invention provides a technical solution: an organic solar cell based on a halogenated graphene quantum dot multi-blend system, comprising an organic solar cell active layer, and the organic solar cell active layer is derived from a conjugated polymer donor material and fullerene. The organic solar cell using the multi-component blending system as the active layer, the specific steps for preparing the active layer are as follows:

[0026] S01: Disperse the halogenated modified graphene quantum dots and the precious metal precursor in a mixed solution of ethanol and water with a volume ratio of 1-10:1 for a water bath heating and stirring reaction for 0.1-3 h, and the water bath temperature is 40-80 °C.

[0027] S02:...

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Abstract

The invention belongs to the field of new energy, and discloses an organic solar cell of a halogenated graphene quantum dot multi-component blend system. It is characterized in that the active layer of the organic solar cell is composed of a conjugated polymer donor material, a fullerene derivative acceptor material, a halogenated graphene quantum dot acceptor material and a multi-component system of noble metal nanoparticles. The growth size of noble metal nanoparticles is effectively controlled by halogenated graphene quantum dots, and the advantages of excellent carrier mobility and soluble processing of graphene quantum dots are used, combined with the localized plasmon resonance effect of noble metal nanoparticles, Not only the effective absorption cross-section of the active layer is enhanced, but also the exciton separation efficiency and carrier mobility of the active layer of the organic solar cell are improved, so that the photoelectric conversion efficiency of the corresponding organic solar cell is greatly enhanced.

Description

technical field [0001] The invention belongs to the field of new energy, in particular to an organic solar cell based on a halogenated graphene quantum dot multi-blend system. Background technique [0002] With the deepening of research on organic solar cells, it is necessary to further improve the optoelectronic properties of organic semiconductor materials and devices to meet the greater demand for optoelectronic devices. However, the low photoelectric conversion efficiency (PCE) greatly hinders the industrialization of organic solar cells. The low power conversion efficiency in organic solar cells is attributed to the low exciton separation efficiency and low carrier mobility, which are related to the type of donor-acceptor material in the active layer and the mobility of charge carriers. Therefore, how to improve the carrier mobility and exciton separation efficiency is an urgent problem to be solved in organic solar cells. [0003] Researchers at home and abroad have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K30/00H10K2102/00Y02E10/549Y02P70/50
Inventor 陈木成
Owner 恒力(厦门)石墨烯科技产业集团有限公司
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