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Ternary blend organic solar cells based on one donor polymer and two acceptors

A solar cell and polymer technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of difficult to control the shape, limit the development of ternary OSC, and difficult to control the shape of ternary mixture OSC.

Pending Publication Date: 2019-06-14
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] For these reasons, the morphology of ternary mixture OSCs is extremely difficult to control because there are three components in the mixture, which limits the development of ternary OSCs
Morphology is difficult to control even for binary OSCs
Therefore, for ternary OSCs, the best efficiency reported so far is about 10.3%, which is still lower than the best binary organic solar cells (>11%).

Method used

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  • Ternary blend organic solar cells based on one donor polymer and two acceptors
  • Ternary blend organic solar cells based on one donor polymer and two acceptors
  • Ternary blend organic solar cells based on one donor polymer and two acceptors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0226] Example 1: Selection and Synthesis of Materials

[0227] Preparation of Donor and Acceptor Materials. These materials are selected from:

[0228]

[0229]

[0230]

Embodiment 2

[0231] Example 2: Solar cells are fabricated and tested

[0232] A pre-patterned ITO coated glass with a sheet resistance of -15Ω / square was used as the substrate. Cleaning was performed in each step by continuous sonication for 15 minutes in soapy deionized water, deionized water, acetone, and isopropanol. with UV-O 3 Cleaner (Novascan, PSD series digital UV ozone system) further treated the washed substrates for 30 minutes. A topcoat of ZnO (diethylzinc solution, 15 wt% in toluene, diluted with tetrahydrofuran) was spin-coated on ITO substrates with a spin speed of 5000 rpm for 30 s, and then baked at 150 °C for 20 min in air . An active layer solution was prepared in CB (polymer:SMA weight ratio 1:1.5). The polymer concentration of PTFB-O is 6 mg mL -1 . To completely dissolve the polymer, the active layer solution was stirred on a hot plate at 100°C for at least 1 hour.

[0233] The polymer solution and ITO substrate were preheated on a hot plate at 100 °C before sp...

Embodiment 3

[0236] Example 3: AFM analysis

[0237] AFM measurements were performed by using a scanning probe microscope-Dimension 3100 in tapping mode. All film samples were spin-coated on ITO / ZnO substrates. Figure 6A -F shows an AFM image.

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Abstract

The present invention relates to an organic solar cell. The organic solar cell comprises a photoactive layer that comprises at least one donor polymer and two non-fullerene molecular acceptors. Further, an organic solar cell comprises a photoactive layer that comprises one donor polymer, one fullerene acceptor, and one non-fullerene molecular acceptor. The donor polymer may exhibit temperature dependent aggregation (TDA) properties in solution, wherein the absorption onset of the polymer solution exhibits a red shift of at least 80 nm when the solution is cooled from 100 DEG C to room temperature or the absorption onset of the polymer solution exhibits a red shift of at least 40 nm when the solution is cooled from 100 DEG C to 0 DEG C.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Provisional Patent Application Serial No. 62 / 496,211, filed October 11, 2016, by the present inventors, the entire contents of which are incorporated herein by reference. technical field [0003] The subject matter of the present invention generally relates to a donor-acceptor conjugated polymer, a method for its preparation, and corresponding intermediates. The subject-matter of the present invention also relates to formulations containing such polymers as semiconductors in organic electronic (OE) devices, in particular in organic solar cell (OSC) devices, and OE and OSC devices made from such formulations application. Background technique [0004] In recent years, there has been increasing interest in the use of organic semiconductors including conjugated polymers for a variety of electronic applications. An important field is the field of organic photovoltaics. Organic semico...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/46H01L51/48H10K99/00
CPCC08G61/126C08G2261/1412C08G2261/1426C08G2261/146C08G2261/149C08G2261/3223Y02E10/549C08G2261/3243H10K71/12H10K85/113H10K85/111H10K85/151H10K85/215H10K30/50C01B32/152H10K30/30H10K30/80H10K30/81H10K71/135
Inventor 颜河蒋奎
Owner THE HONG KONG UNIV OF SCI & TECH
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