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Nanofiber, organic solar cell using same, and a method for preparing organic solar cell

A solar cell, nanofiber technology, applied in nanotechnology, nanotechnology, fiber processing, etc., can solve the problems of complex operation, low polymer, industrial application limitations, etc.

Active Publication Date: 2018-09-07
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past ten years, organic solar cells have developed rapidly, and their highest efficiency PCE (that is, energy conversion efficiency) has exceeded 13%, only when the effective device area of ​​the battery does not exceed 0.05cm 2 It can be realized under certain conditions, and the thickness of the active layer of the battery is extremely strict (within 100nm), which has caused many restrictions on industrial applications.
[0003] Existing methods for preparing nanofibers, such as template method, solution self-assembly method, nanoimprint etching method, etc., have the problems of limited yield, complicated operation, and poor controllability. Electrospinning can prepare polymer nanofibers and adjust the fiber diameter, but the preparation method is complicated and cannot be applied to polymers with lower molecular weight.

Method used

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  • Nanofiber, organic solar cell using same, and a method for preparing organic solar cell
  • Nanofiber, organic solar cell using same, and a method for preparing organic solar cell
  • Nanofiber, organic solar cell using same, and a method for preparing organic solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment 1: A method for coaxial electrospinning to prepare nanofibers, assisting filamentation of target materials that are difficult to filamentize, comprising the following steps:

[0064] (1) configure the spinning inner tube precursor;

[0065] (2) configure the spinning outer tube precursor;

[0066] (3) Add the electrospinning precursor solution configured in steps (1) and (2) into figure 1 In the electrospinning device shown, adjust the receiving distance, set the liquid inlet speed of the constant-current pump, turn on the high-voltage power supply to explore to the critical value, and start electrospinning to obtain high-molecular polymer nanofibers with a core-shell structure;

[0067] (4) Place the nanofibers prepared in step (3) in a centrifuge tube, pour a quantitative cleaning solution, and perform repeated ultrasonic and centrifugal operations to completely remove the shell material, and the dried core layer fiber is the present invention. Target mat...

Embodiment 2

[0086] The amount of basic materials used in this example and the preparation method are the same as in Example 1, the difference is that the voltage of the high-voltage power supply in step 2) is adjusted to 1kV-100kV, and the following sets of data are used respectively: 1kV, 3kV, 6kV, 9kV , 12kV, 15kV, 18kV, 21kV, 24kV, 27kV, 30kV, 50kV and 100kV, but adjusting the high-voltage power supply voltage in the method of the present invention is not limited to the listed values, and other unlisted values ​​within the range of 1kV to 100kV are also applicable.

Embodiment 3

[0088] The amount of basic materials used in this example and the preparation method are the same as in Example 1, except that the adjustment receiving distance in step 2) is 1cm to 100cm, and the following sets of data are used respectively: 1cm, 5cm, 7cm, 10cm, 13cm, 15cm, 17cm, 20cm, 23cm, 25cm, 27cm, 30cm, 50cm and 100cm, but the adjustment of the receiving distance in the method of the present invention is not limited to the listed values, and other unlisted values ​​within the range of 1cm to 100cm are also applicable.

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Abstract

The invention discloses a nanofiber, an organic solar cell and a method for preparing an organic solar cell by using the nanofiber. A target material, which is less likely to be made into fibers, is made into fibers by using a novel coaxial electrospinning technology, thereby obtaining a nanofiber suspension of the target material. Then, the obtained target material nanofiber is processed and thenadded to the active layer of the organic solar cell. Therefore, negative influences on device performance due to the thickness increase of the active layer is eliminated by the characteristics of high crystallinity, large specific surface area and good structural continuity of the nanofiber, thereby significantly improving multiple optoelectronic performance parameters of the device and providinga possibility for breaking the battery efficiency bottleneck.

Description

technical field [0001] The invention belongs to the technical field of photoelectric functional materials, and in particular relates to a nanofiber of a polymer photoelectric material, an organic solar cell using the nanofiber and a method for applying the nanofiber in the organic solar cell. Background technique [0002] In the past ten years, organic solar cells have developed rapidly, and their highest efficiency PCE (that is, energy conversion efficiency) has exceeded 13%, only when the effective device area of ​​the battery does not exceed 0.05cm 2 It can be realized under certain conditions, and the thickness of the active layer of the battery is extremely strict (within 100nm), which has caused many restrictions on industrial applications. [0003] Existing methods for preparing nanofibers, such as template method, solution self-assembly method, nanoimprint etching method, etc., have the problems of limited yield, complicated operation, and poor controllability. Elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42B82Y30/00B82Y40/00D01D5/34D01D10/00D01D11/00D01D13/00
CPCD01D5/34D01D10/00D01D11/00D01D13/00B82Y30/00B82Y40/00H10K71/12H10K30/30Y02E10/549
Inventor 陈志宽黄何俊宁南慧荣陈飞
Owner NANJING UNIV OF TECH
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