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All-weather mesoporous sensitized solar cell based on graphene quantum dots and preparation method and application thereof

A technology of graphene quantum dots and solar cells, applied in photosensitive equipment, circuits, capacitors, etc., can solve the problems of solar cell power generation limitations, expensive equipment, cumbersome preparation process, etc., and achieve good photoelectric conversion efficiency, low cost, and easy preparation The effect of simple method

Inactive Publication Date: 2016-10-26
OCEAN UNIV OF CHINA
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Problems solved by technology

[0003] The object of the present invention is to provide a kind of all-weather mesoporous sensitized solar cell based on graphene quantum dots and its preparation method and application, aiming at the disadvantages of current graphene quantum dot preparation process cumbersome, expensive equipment and limitations of solar cell power generation. The preparation method is simple and convenient to operate, environmentally friendly and low in cost

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  • All-weather mesoporous sensitized solar cell based on graphene quantum dots and preparation method and application thereof
  • All-weather mesoporous sensitized solar cell based on graphene quantum dots and preparation method and application thereof

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Embodiment 1

[0032] 1. The preparation method of the all-weather mesoporous sensitized solar cell based on graphene quantum dots comprises the following steps:

[0033] (1) Disperse 1~3g sugar (such as maltitol or sucrose, etc.) in 0.3~0.7mL deionized water to make sugar reaction solution (if glucose is used as sugar, you can skip this step and directly heat and reflux) ;

[0034] (2) Add a certain amount of dopant to the carbohydrate solution in step (1), and heat to reflux at 160~180°C, the color changes from colorless to yellow;

[0035] (3), adding the molten yellow colloid obtained in step (2) dropwise to 80-120mL deionized water and stirring vigorously to prepare an aqueous solution of graphene quantum dots;

[0036] (4) Preparation of titanium dioxide thin film: apply the titanium dioxide colloid prepared by the conventional sol-hydrothermal method on the FTO or ITO conductive glass substrate, control the film thickness to 5-15 μm, and calcinate at 450°C for 30 minutes to prepare p...

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Abstract

The invention provides an all-weather mesoporous sensitized solar cell based on graphene quantum dots and a preparation method and an application thereof. Sugar is refluxed, heated and molten at a certain temperature to prepare graphene quantum dots eventually, and the graphene quantum dots are dispersed in water to form aqueous solution. The adjustable optical band gap, light absorption and multi-exciton generation effect of the graphene quantum dots are fully utilized, and then, an all-weather mesoporous sensitized solar cell is assembled. The graphene quantum dots have the advantages of simple preparation, stable performance, low cost and large space for improvement. The assembled all-weather mesoporous sensitized solar cell based on graphene quantum dots is of high photoelectric conversion efficiency.

Description

technical field [0001] The invention belongs to the field of new material technology and new energy technology, and in particular relates to an all-weather mesoporous sensitized solar cell based on graphene quantum dots and its preparation method and application. Background technique [0002] Graphene quantum dots not only have the excellent properties of graphene materials, but also have quantum confinement effects and multi-exciton generation and absorption effects, making them have broad application prospects in the field of optoelectronic devices. However, the simple and easy large-scale preparation of graphene quantum dots is not yet mature, and the application of graphene quantum dots in optoelectronic devices is in its infancy. Therefore, finding a simple and convenient method for large-scale preparation of graphene quantum dots is an important problem to be solved urgently. Due to the excellent photoelectric conversion ability and high electron mobility of graphene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCH01G9/20H01G9/2031Y02E10/542Y02P70/50
Inventor 唐群委朱婉路杨培志贺本林
Owner OCEAN UNIV OF CHINA
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