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An organic solar cell that constructs an internal electric field by doping nanoparticles in a charge transport layer and its preparation method

A charge transport layer and solar cell technology, applied in organic semiconductor devices, circuits, photovoltaic power generation, etc., can solve the problems of low device performance and low carrier transfer efficiency, achieve high photoelectric conversion capability, improve mobility, and cost performance high effect

Active Publication Date: 2022-08-02
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] The purpose of the present invention is to solve the problem that the photogenerated excitons produced by the above-mentioned liquid organic solar cells are not easy to generate free electrons and holes, which are easy to recombine and cause energy loss, and the low carrier transport efficiency leads to low device performance. The present invention provides a Organic solar cell and its preparation method for constructing internal electric field by doping nanoparticles in charge transport layer

Method used

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  • An organic solar cell that constructs an internal electric field by doping nanoparticles in a charge transport layer and its preparation method
  • An organic solar cell that constructs an internal electric field by doping nanoparticles in a charge transport layer and its preparation method
  • An organic solar cell that constructs an internal electric field by doping nanoparticles in a charge transport layer and its preparation method

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Effect test

Embodiment 1

[0033] An organic solar cell that builds an internal electric field by doping nanoparticles in the charge transport layer, such as figure 1 As shown, it includes a substrate, the substrate has an electrode layer, the electrode layer is plated with an electron transport layer doped with P-type semiconductor nanoparticles, and the electron transport layer doped with P-type semiconductor nanoparticles is spin-coated from bottom to top An organic functional layer and a hole transport layer doped with N-type semiconductor nanoparticles are provided, and a metal electrode layer is plated on the hole transport layer doped with N-type semiconductor nanoparticles.

[0034] Wherein, the substrate is a glass substrate.

[0035] The electrode layer adopts the ITO transparent conductive electrode on the glass substrate.

[0036] The electron transport layer doped with P-type semiconductor nanoparticles adopts a ZnO film with a thickness of 10 nm doped with 2wt% Cu2O nanoparticles.

[003...

Embodiment 2

[0047] Example 2: Comparative Example

[0048] On the basis of Embodiment 1, the difference between this embodiment and Embodiment 1 is that the electron transport layer and the hole transport layer are not doped, which is not enough to build the internal electric field of the device. Solar cells, and Example 1 constitute a control group.

[0049] The glass substrate is used as the substrate, the ITO electrode is used for the electrode layer, ZnO is used for the electron transport layer, the PBDB-T:ITIC bulk heterojunction is used for the organic functional layer, the MnO3 is used for the hole transport layer, and the silver electrode is used for the electrode layer 6.

[0050] The specific preparation method is as follows:

[0051] 1. Cleaning the substrate: Put the glass substrate with the conductive electrode 2 into detergent, acetone, deionized water, and isopropanol in sequence, ultrasonically clean for 15 minutes each time, and then dry it with an inert gas and oxidize ...

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Abstract

The invention discloses an organic solar cell for constructing an internal electric field by doping nanoparticles in a charge transport layer and a preparation method thereof, belonging to the field of optoelectronic devices, and comprising a substrate, an electrode layer, an electron transport layer and an organic functional layer in order from bottom to top , a hole transport layer and a metal electrode layer, the electron transport layer is doped with P-type semiconductor nanoparticles with a mass fraction of 0.5-3.5%, and the hole transport layer is doped with N with a mass fraction of 0.5-3.5% type semiconductor nanoparticles. The invention constructs an internal electric field by doping nano-particles inside the charge transport layer, improves the transmission and collection efficiency of carriers, has good performance of improving photoelectric conversion efficiency, and the preparation method is simple and efficient, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of optoelectronic devices, and in particular relates to an organic solar cell and a preparation method thereof for constructing an internal electric field by doping nano-particles in a charge transport layer. Background technique [0002] Organic solar cells have a wide range of applications in many aspects such as resource conservation, environmental protection, energy utilization, and household daily use due to their low cost and flexibility. In order to meet the requirements of practical applications, organic solar cells should have high photoelectric conversion efficiency and long service life to achieve high-efficiency energy use. However, due to the complex mechanism of organic solar cells and the difficult separation of generated excitons, organic solar cells are often difficult to separate into free electrons and holes after photogenerated excitons are generated, resulting in low photoelectric conversion effic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/46H01L51/44H01L51/42H01L51/48
CPCH10K71/30H10K71/12H10K71/40H10K30/35H10K30/80H10K2102/00Y02P70/50
Inventor 刘洁尘李娜贾晓伟刘泽宇钟建
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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