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An organic solar cell based on double transport layer interface modification to improve plasmon resonance absorption and its preparation method

A technology of plasmon resonance and solar cells, which is applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve problems such as low light absorption and carrier recombination, achieve enhanced light absorption, increase transmission rate, reduce The effect of unbalanced transmission

Inactive Publication Date: 2018-09-28
JILIN UNIV
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Problems solved by technology

However, for polymer organic solar cells, high carrier recombination and low light absorption are problems that researchers must face

Method used

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  • An organic solar cell based on double transport layer interface modification to improve plasmon resonance absorption and its preparation method
  • An organic solar cell based on double transport layer interface modification to improve plasmon resonance absorption and its preparation method

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Embodiment 1

[0039] 1) Substrate processing

[0040] The ITO conductive glass was ultrasonically cleaned with deionized water, acetone, and isopropanol for 30 minutes, and then dried with nitrogen after cleaning;

[0041] 2) Preparation of electron transport layer

[0042] a, TiO 2 Sol configuration

[0043] Add 10 mL of C to 40 mL of absolute ethanol 16 h 36 o 4 Stir Ti evenly for 60 minutes; add 10mL glacial acetic acid and 20mL absolute ethanol, stir for 30 minutes; add 10mL acetylacetone and 20mL absolute ethanol, stir for 30 minutes; add 10mL deionized water and 20mL absolute ethanol, stir for 24h; 3 days, eventually forming TiO 2 Sol.

[0044] b,TiO 2 Preparation of electron transport layer

[0045] TiO will be produced 2 The sol is spin-coated on the surface of ITO, and the spin-coating speed is 3000rpm; 2 The ITO conductive glass of the sol was fired in a muffle furnace at 450°C for 2 hours; after cooling down to room temperature naturally, TiO can be prepared on the ITO...

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Abstract

An organic solar cell and a preparation method for improving plasmon resonance absorption based on double-transport layer interface modification and its preparation method belong to the technical field of organic solar cells. From bottom to top, it is composed of ITO conductive glass substrate / TiO2 electron transport layer / Au‑TiO2 core-shell structure nanoparticle layer / PTB7 active layer / Ag‑WO3 core-shell structure nanoparticle layer / WO3 hole transport layer / Ag anode , the present invention grows a layer of Au-TiO2 core-shell structure nanoparticles between the electron transport layer TiO2 and the active layer and grows a layer of Ag-WO3 core-shell structure nanoparticles between the hole transport layer WO3 and the active layer. The electron transport layer and the hole transport layer are modified, and the surface plasmon resonance effect of Au nanoparticles on both sides of the active layer is used to enhance the light absorption of the active layer, thereby improving the utilization of sunlight by the device. The method is simple and practical, and the device preparation process is based on the solution method, which is low in cost and easy to operate, and has great reference significance for the development of organic solar cells in the future.

Description

technical field [0001] The invention belongs to the technical field of organic solar cells, and in particular relates to an organic solar cell and a preparation method thereof for improving plasmon resonance absorption based on double-transport layer interface modification. Background technique [0002] Organic solar cells have attracted more and more attention from researchers in recent years due to their advantages of flexibility, bendability, low cost, and large-area printing production, and have achieved high energy conversion efficiency. However, for polymer organic solar cells, high carrier recombination and low light absorption are problems that researchers must face. Researchers around the world try to improve the absorption of the active layer and improve the performance of the device through various methods, such as making stacked batteries, doping the active layer, and modifying the device. In the present invention, the modification of the interface of the double ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42
CPCH10K30/00Y02E10/549Y02P70/50
Inventor 郭文滨李质奇沈亮温善鹏周敬然董玮张歆东阮圣平
Owner JILIN UNIV