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Organic solar cell based on AZO/Ca cathode and manufacturing method thereof

A solar cell and organic technology, applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve the problems of lack of device structure and preparation technology, rare research and reports, etc., to improve short-circuit current density and fill factor, easy Large-area film formation and cost reduction effect

Inactive Publication Date: 2014-05-14
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few reports on the use of AZO cathodes in inversion-structure organic solar cells. There are few related studies and reports on whether there is light saturation in devices based on AZO cathodes, and how to overcome them. Device structure and fabrication technology are relatively missing

Method used

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  • Organic solar cell based on AZO/Ca cathode and manufacturing method thereof
  • Organic solar cell based on AZO/Ca cathode and manufacturing method thereof

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Effect test

Embodiment 1

[0037] The realization steps of the present invention are as follows:

[0038] Step 1, cleaning the substrate substrate.

[0039] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 minutes in sequence. After cleaning, it was blown dry with a nitrogen gun, and then placed in a nitrogen atmosphere glove box. The thickness of glass is about 2mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0040] Step 2, depositing a Ca electron transport layer.

[0041] Thermally evaporate the Ca-modified layer with a background vacuum of 4×10 -4 Pa, current 27A, evaporation rate 0.05nm / s, thickness 5nm;

[0042] Step 3, depositing the photoactive layer of P3HT:PCBM.

[0043]First, P3HT and PCBM were dissolved in 1-2 chlorobenzene respectively to obtain a solution with a concentration of 20 mg / mL. After stirring at room temperature for 4 hours, they were mixed at a volume ratio of 1:0....

Embodiment 2

[0054] The realization steps of the present invention are as follows:

[0055] Step 1, cleaning the substrate substrate.

[0056] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 minutes in sequence. After cleaning, it was blown dry with a nitrogen gun, and then placed in a nitrogen atmosphere glove box. The thickness of glass is about 2mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0057] Step 2, depositing a Ca electron transport layer.

[0058] Thermally evaporate the Ca-modified layer with a background vacuum of 4×10 -4 Pa, current 27A, evaporation rate 0.05nm / s, thickness 1nm;

[0059] Step 3, depositing the photoactive layer of P3HT:PCBM.

[0060] First, P3HT and PCBM were dissolved in 1-2 chlorobenzene respectively to obtain a solution with a concentration of 20 mg / mL. After stirring at room temperature for 4 hours, they were mixed at a volume ratio of 1:0...

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Abstract

The invention discloses an organic solar cell based on an AZO / Ca cathode and a manufacturing method of the organic solar cell. The organic solar cell comprises a substrate made of glass or quartz, the cathode made of AZO and used for collecting electrons, an electron transmission layer made of ultrathin metal Ca and used for decorating an interface, blocking a hole and transmitting the electrons, an organic active layer made of a mixed material of P3HT and PCBM and serving as a photovoltaic conversion active layer, a hole transmission layer made of MoO3 or WO3 and used for blocking the electrons and transmitting the hole and an anode made of metal Ag and used for collecting the hole, wherein light enters a device from one side of the substrate. The ultrathin (such as 1nm) Ca is used for decorating an AZO work function, the interfacial characteristic is improved, energy loss is reduced, the energy conversion efficiency of the organic solar cell of a reversed structure is improved, and the light saturation phenomenon which is not beneficial for stable work of the reversed organic solar battery is effectively limited.

Description

technical field [0001] The invention relates to an organic solar cell and a preparation method thereof, in particular to an organic solar cell with an inverted structure using ultra-thin Ca-modified AZO as a cathode and a preparation method thereof. Background technique [0002] At present, under the background of energy crisis and global warming, renewable energy has attracted extensive attention from all over the world. Different from traditional energy sources such as coal, oil, and natural gas, solar energy is a green, clean, and renewable energy source that is inexhaustible and has the potential to become an important part of future energy supply. As an effective photoelectric conversion device, the research and application of solar cells have received more and more attention. Different from expensive silicon-based solar cells, organic solar cells use organic semiconductor materials as the photoactive layer, which has the characteristics of low cost, high light absorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/60H10K30/82H10K30/30Y02E10/549
Inventor 陈大正张春福王之哲郝跃陆小力唐诗孙丽党睿
Owner XIDIAN UNIV
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