Polymer solar battery based on solvent doping, and preparation method thereof

A solar cell and polymer technology, applied in the field of polymer solar cells based on solvent doping, can solve the problems of low carrier mobility and low light absorption efficiency, and achieve the effect of improving efficiency and simple preparation process

Active Publication Date: 2015-12-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the efficiency of organic solar cells has been continuously improved in the past decade, there are still some limiting factors that constrain the device efficiency, such as low light absorption efficiency and low carrier mobility.

Method used

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  • Polymer solar battery based on solvent doping, and preparation method thereof
  • Polymer solar battery based on solvent doping, and preparation method thereof
  • Polymer solar battery based on solvent doping, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The polymer solar cell based on P3HT:PCBM system is provided in this embodiment, its structure is as follows figure 2 As shown, the glass substrate is followed by an anode electrode, a hole transport layer, an active layer, an electron transport layer, and a cathode; it is prepared by the following process:

[0031] 1. Prepare the mixed solution two days in advance. The mixed solution configuration process is as follows:

[0032] a. The volume of the mixed solvent is 1ml, including 0.95ml of o-dichlorobenzene and 0.05ml of 1-chloro-4-pentylbenzene, that is, the volume ratio of 1-chloro-4-pentylbenzene to the total solvent is 5%;

[0033] b. Weigh 20mgP3HT and 20mgPCBM and dissolve in the mixed solvent;

[0034] c. The mixed solution was stirred and heated for 48 hours;

[0035] 2. The anode is indium tin oxide (ITO), and its square resistance is 15Ω / cm 2 . Wash the ITO with a special ITO cleaning agent, rinse it with deionized water, and then dry it in an oven for ...

Embodiment 2

[0044] In this embodiment, a polymer solar cell based on the P3HT:PCBM system is provided, and the solvent additive in the active layer mixed material solution is 1-bromo-4-pentylbenzene. During the preparation process, 0.99ml of Chlorobenzene, 0.01ml 1-bromo-4-pentylbenzene, that is, 1-bromo-4-pentylbenzene accounts for 1% of the total solvent volume.

[0045] The performance parameters of the polymer solar cell in the present embodiment tested under the same conditions are shown in the following table:

[0046] add ratio

[0047] It can be seen from the table that the efficiency of the device of the present invention is significantly improved compared with that of the original device. Adding 1% 1-bromo-4-pentylbenzene in the mixed solution of the active layer increases the open-circuit voltage to a certain extent, and the short-circuit current increases from 7.62mA / cm 2 increased to 10.94mA / cm 2 , the final conversion efficiency increased by 41.7%. I-V curve such...

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Abstract

The invention belongs to the field of an organic polymer solar battery, and provides a polymer solar battery based on solvent doping, and a preparation method thereof, for improving the performance and efficiency of a polymer solar battery. The polymer solar battery is formed by successively overlapping an anode electrode, a cavity transmission layer, an active layer, an electron transmission layer and a cathode from bottom to top, wherein a solvent additive is added to the mixed material solution of the active layer, and the solvent additive is 1-chlorine-4-amylbenzene or 1-bromine-4-amylbenzene; and the additive amount of the solvent additive is as follows: the proportion of the 1-chlorine-4-amylbenzene to a solvent is 5:95, and the proportion of the 1-bromine-4-amylbenzene to the solvent is 1:99. According to the invention, through adding the solvent additive into the mixed material solution of the active layer, the performance of the polymer solar battery, including short-circuit current density, open-circuit voltages, filling factors and the like, is improved, and the efficiency of the polymer solar battery is effectively enhanced.

Description

technical field [0001] The invention belongs to the field of organic polymer solar cells, and relates to the preparation of organic solar cell devices based on a mixed system of polymers and fullerene derivatives, in particular to a polymer solar cell based on solvent doping; the use of solvent additives It is a low-cost, simple and effective method for improving battery performance. Background technique [0002] Research on organic solar cells has yielded some results in the past 40 years. Especially in the last decade, the rapid increase in the conversion efficiency of organic solar cells has attracted the attention of the scientific field and the photovoltaic industry. Although the efficiency of organic thin-film cells is still a bit far from the level of inorganic solar cells, the cheap production of the devices (for example, using roll-to-roll processes) has attracted us to study them. Based on the ever-increasing demand for energy, solar energy has received great att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/111H10K30/15Y02E10/549Y02P70/50
Inventor 陶斯禄丁旭琳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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