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A solar cell based on an inorganic heterojunction and its preparation method

A solar cell and bulk heterojunction technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as energy transfer of unfavorable absorbing materials, unsatisfactory interface contact, unfavorable energy transfer, etc., to achieve maximum application value and equipment requirements The effect of low cost and simple preparation method

Inactive Publication Date: 2015-12-23
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the method of depositing quantum dots is simple and can greatly reduce the cost of battery preparation, these technologies also have some shortcomings: for example, (1) quantum dots and TiO 2 -The interfacial contact between NA is not ideal, which is not conducive to the absorption material and TiO 2 - Energy transfer between NAs; (2) Usually, when synthesizing quantum dots, organic surface modifiers are needed to control the size and agglomeration of quantum dots. 2 - Energy transfer between NA

Method used

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  • A solar cell based on an inorganic heterojunction and its preparation method
  • A solar cell based on an inorganic heterojunction and its preparation method
  • A solar cell based on an inorganic heterojunction and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Example 1: TiO 2 Fabrication of Nanorod Arrays.

[0046] (1-1) Preparation of nanorod arrays:

[0047] First use a mixture of concentrated HCl-water and Zn powder with a volume ratio of 1:1 to etch the FTO on the FTO conductive glass (FTO thickness is 400nm, 14Ω / □) to 16×4mm 2 Thin strips; then ultrasonically cleaned with acetone, isopropanol, and ultrapure water, and dried to obtain the treated FTO conductive glass.

[0048] Dissolve 30mL of concentrated hydrochloric acid in 30mL of deionized water, stir evenly, then add 1mL of butyl titanate and stir for 15 minutes to obtain a reaction solution; place the treated FTO conductive glass face down in a 100mL autoclave, and place The pre-prepared reaction solution was added to the autoclave, sealed and reacted in an oven at 180°C for 2.5 hours; after the autoclave was cooled to room temperature, the sample was taken out and rinsed several times with deionized water to obtain TiO 2 The primary product of nanorod arrays; ...

Embodiment 2

[0051] Example 2: Sb 2 S 3 / TiO 2 - Preparation of NA composite membranes.

[0052] (2-1)TiO 2 Preparation of nanorod array: same as Example 1.

[0053] (2-2) Sb 2 S 3 / TiO 2 Preparation of -NA composite membrane:

[0054] 360mL of 0.28M Na 2 S 2 o 3 The solution was cooled in an ice-water bath for 20 minutes to lower the temperature to about 5°C, and then the TiO 2 The nanorod arrays were placed face down on the Na 2 S 2 o 3 solution; to Na at a rate of 2mL / min 2 S 2 o 3 40mL of SbCl with a concentration of 0.29M was added dropwise to the solution 3 acetone solution, keep cooling with ice bath during the dropwise addition of Na 2 S 2 o 3 solution; after the dropwise addition, the reaction was continued for 6 hours under ice-water bath cooling conditions, and the Sb 2 S 3 chemical bath deposition. After deposition, remove the TiO 2 The nanorod array sample was washed several times with deionized water, and then dried with nitrogen to obtain an orange-re...

Embodiment 3

[0058] Example 3: Sb 2 S 3 / TiO 2 - Fabrication of NA bulk heterojunction solar cells.

[0059] (3-1)TiO 2 Preparation of nanorod array: same as Example 1.

[0060] (3-2) Sb 2 S 3 / TiO 2 -Preparation of NA composite film: same as Example 2.

[0061] (3-3)Sb 2 S 3 / TiO 2 - Fabrication of NA bulk heterojunction solar cells.

[0062] Using freshly distilled chlorobenzene as a solvent, prepare a MEH-PPV solution with a concentration of 5 mg / mL and stir it at room temperature for 24 hours. Disperse 150 μL of MEH-PPV solution evenly over Sb 2 S 3 / TiO 2 -NA composite film, spin coating (1000 rpm, 60 sec) to deposit MEH-PPV onto Sb 2 S 3 / TiO 2 - on the NA composite film; after vacuum drying at 40°C for 6 hours, heat treatment at 150°C for 10 minutes under the protection of nitrogen, on Sb 2 S 3 / TiO 2 -A MEH-PPV film with a thickness of about 40nm was formed on the NA composite film as an electron blocking layer. Spin-coat a mixture of PEDOT:PSS and isopropanol ...

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Abstract

The invention discloses a solar battery based on an inorganic bulk heterojunction and a preparation method thereof. The battery comprises a glass substrate, an FTO (fluorine-doped tin oxide) layer which is used as a positive electrode, a heterojunction composite film layer consisting of an Sb2S3 (stibnite) block and a TiO2 (titanium dioxide) nano-bar array, a polymer MEH-PPV electron barrier layer, a PEDOT: PSS hole transferring layer and an Au (gold) film layer as a battery negative electrode. The preparation method of the battery is simple, and the battery has a spectrum response range of 300 nm to 750 nm; and when an optical active layer of the battery stays at an illumination state, conversion efficiency of the battery can reach 5.58 percent.

Description

technical field [0001] The invention relates to the field of solar cells and preparation methods thereof, in particular to a solar cell based on an inorganic heterojunction and a preparation method thereof. Background technique [0002] With the rapid consumption of fossil resources such as coal and petroleum and the resulting environmental pollution and greenhouse effect, the exploration and utilization of renewable energy has become one of the most urgent problems that human beings need to solve in the 21st century. Converting solar energy into electrical energy and realizing photovoltaic power generation is an important way to utilize renewable energy. The most critical part of the photovoltaic power generation system is the device that captures and converts solar energy, that is, the solar cell. Exploring new material systems, improving cell efficiency and stability, and reducing cell cost have become the main challenges facing solar cell research and the development of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/072H01L31/0352H01L31/032H01L31/18
CPCY02E10/50Y02P70/50
Inventor 邱泽亮王命泰刘长文吴璠张慧
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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