Methods to improve the morphology of organic solar cells

A solar cell and organic technology, applied in the field of materials, can solve problems such as complex processing methods, harsh requirements, and pending development, and achieve the effects of wide application prospects, stable shape, and simple structure

Active Publication Date: 2022-03-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the one hand, most of the processing methods for controlling the morphology of the active layer of organic solar cells are more suitable for the experimental preparation of small-area battery devices; on the other hand, some processing methods are more complicated and require more stringent conditions.
Therefore, devices and methods suitable for controlling the morphology of the active layer of organic solar cells are still to be developed.

Method used

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  • Methods to improve the morphology of organic solar cells
  • Methods to improve the morphology of organic solar cells
  • Methods to improve the morphology of organic solar cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] With a strong main chain rigid material (P226) as the polymer donor and PC 71 BM prepares organic solar cells with novel structures for fullerene derivative acceptors.

[0086] The device preparation process is as follows

[0087] 1. Cut the ITO / glass substrate or flexible ITO / PET substrate to an appropriate size and clean it. The cleaning process is to add an appropriate amount of surfactant in clean water and ultrasonically clean for 10-15 minutes, repeat once; after rinsing with clean water, ultrasonically clean with deionized water for 10-15 minutes, repeat once; analyze pure acetone ultrasonically for 10-15 minutes , repeat 1 time; analyze pure isopropanol ultrasonic cleaning for 10 to 15 minutes, repeat 1 time; then set aside.

[0088] 2. The substrate is dried with high-purity nitrogen gas or dried in an oven before use.

[0089] 3. Treat the ITO conductive substrate with an ultraviolet ozone cleaner (UVO) for 15 minutes.

[0090] 4. Prepare poly(3,4-ethylene...

Embodiment 2

[0097] Using PTB7-Th as polymer donor and PC 71 BM was used as the acceptor to prepare organic solar cells, except that the ratio of PTB7-Th and PC71BM was changed to 1:1.5, and the device preparation method was the same as in Example 1.

Embodiment 3

[0099] Organic solar cells were prepared using PTB7-Th as a polymer donor and non-fullerene acceptor ITIC, except that the ratio of PTB7-Th and ITIC was changed to 1:1, and the device preparation method was the same as in Example 1.

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Abstract

The present invention is a method for improving the morphology of the organic solar cell, and proposes a device for regulating the morphology of the active layer of the organic solar cell, including: a rotor, the rotor includes a coaxially connected first columnar part and a second columnar part, used for applying shear force to the organic solar cell active layer material solution; and a columnar container, wherein a first accommodation chamber is formed in the columnar container for containing the organic solar cell active layer material solution and the rotor. The device of the present invention applies a directional shear force to the active layer material solution, so that the donor / acceptor material forms a good orderly blending state before coating and forming a film, and no other methods are required during the coating process. Form a stable and evenly distributed active layer thin film, so as to improve the efficiency of the battery. Moreover, the device has a simple structure and is easy to operate, and can be used not only for small-area devices prepared in a laboratory, but also for mass production of large-area batteries, and has broad application prospects.

Description

technical field [0001] The present invention relates to the field of materials. In particular, the present invention relates to methods for improving the morphology of organic solar cells. More specifically, the present invention relates to a device for regulating the morphology of an active layer of an organic solar cell, a method for regulating the morphology of an active layer of an organic solar cell using the device, a method for preparing an organic solar cell, and an organic solar cell. Background technique [0002] Organic solar cells were first prepared in the 1950s, followed by decades of silence, until the re-development in the 1980s, and the rapid explosion stage in the new century (2005-present). Meanwhile, as the core part of organic solar cells, the preparation of photovoltaic active layer thin films has also gradually transitioned from early distillation to the current mainstream solution method. On the other hand, as a new generation of solar cells, a huge...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/00Y02E10/549Y02P70/50
Inventor侯剑辉张赟
OwnerINST OF CHEM CHINESE ACAD OF SCI