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Organic-inorganic planar heterojunction solar cell prepared through solutions and preparing method of solutions

A solution processing, solar cell technology, applied in organic semiconductor devices, sustainable manufacturing/processing, circuits, etc., can solve the problem of high cost of organic materials, improve film formation, overcome high material costs, and increase open circuit voltage and energy. The effect of conversion efficiency

Active Publication Date: 2014-07-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of high-temperature processing of inorganic materials and the high cost of organic materials in the prior art, the primary purpose of the present invention is to provide a solution-processed organic-inorganic planar heterojunction solar cell

Method used

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  • Organic-inorganic planar heterojunction solar cell prepared through solutions and preparing method of solutions
  • Organic-inorganic planar heterojunction solar cell prepared through solutions and preparing method of solutions
  • Organic-inorganic planar heterojunction solar cell prepared through solutions and preparing method of solutions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: the preparation of photoactive layer material

[0054] CH of the compound A 3 NH 3 I. CH 3 NH 3 Br, CH 3 NH 3 Cl, CH 3 CH 2 NH 3 I. CH 3 CH 2 NH 3 Br, CH 3 CH 2 NH 3 Cl, CH 3 CH 2 CH 2 NH 3 I. CH 3 CH 2 CH 2 NH 3 Br, CH 3 CH 2 CH 2 NH 3 Cl, CH(NH 2 ) 2 I, CH(NH 2 ) 2 Br, CH(NH 2 ) 2 Cl, CH 3 CH(NH 2 ) 2 I. CH 3 CH(NH 2 ) 2 Br, CH 3 CH(NH 2 ) 2 Cl. The synthesis of is prepared according to the method in the literature (J.Am.Chem.Soc.2012,134,17396-17399).

[0055] CH 3 NH 3 PB 3 The synthesis of CH 3 NH 3 I and PbI 2 It is co-dissolved in γ-butyrolactone or other organic solvents and reacted, as follows:

[0056] Take CH 3 NH 3 I (32mg) and PbI 2 (93 mg) was blended and dissolved in 1 mL of γ-butyrolactone, heated to 60° C., and stirred for 12 hours to obtain the photoactive layer material.

[0057] The preparation of photoactive layer materials containing polymer additives is as follows:

[0058] Add CH ...

Embodiment 2

[0061] Embodiment 2: the preparation of organic-inorganic heterojunction solar cell:

[0062] Pre-cut the ITO conductive glass with a square resistance of 20 ohms / cm2 into 15mm×15mm square pieces. Use acetone, special detergent for micron-sized semiconductors, deionized water, and isopropanol to clean ultrasonically in sequence, and then place it in a constant temperature oven for later use after purging with nitrogen. Before use, the ITO glass slides were bombarded with plasma in an oxygen plasma etcher for 10 min. PEDOT:PSS aqueous dispersion (about 1%) was purchased from Bayer, and the buffer layer was spin-coated at a high speed using a homogenizer (KW-4A), and the thickness was determined by the solution concentration and rotating speed. 500 type) measured monitoring. After film formation, remove solvent residue and vertical film in a constant temperature vacuum oven. The film thickness of PEDOT:PSS on the ITO substrate is preferably about 40 nanometers. The cathode i...

Embodiment 3

[0069] Example 3: Photovoltaic performance of organic-inorganic heterojunction solar cells with different photoactive layer materials

[0070] CH 3NH 3 PB 3 , CH 3 NH 3 PB x Cl 3-x and CH 3 NH 3 PB x Br 3-x (x is less than 3, greater than 0) is to measure the photovoltaic performance of the organic-inorganic heterojunction solar cell prepared from the photoactive layer material, and the results are shown in Table 2.

[0071] Table 2 Battery device performance indicators of different photoactive layer materials

[0072]

Voc(V)

Jsc(mA / cm2)

FF(%)

PCE(%)

CH 3 NH 3 PB 3

0.71

7.47

44.6

2.37

CH 3 NH 3 PB x Cl 3-x

0.94

10.19

64.9

6.21

CH 3 NH 3 PB x Br 3-x

1.01

2.55

42.4

1.09

[0073] It can be seen from Table 2 that by changing the composition of the active layer material and increasing the content of bromine element or chlorine element therein, the ...

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Abstract

The invention belongs to the technical field of photoelectric devices, and discloses an organic-inorganic planar heterojunction solar cell prepared through solutions and a preparing method of the solutions. The solar cell comprises a substrate, an anode, an anode interface layer, a photoactivity layer, a cathode interface layer and a cathode which are all sequentially stacked, wherein the material of the photoactivity layer is an inorganic material which is soluble in a solvent and is of a perovskite structure, and performance of the material can be improved by adding polymer additives. The invention provides a planar heterojunction solar cell device with the photoactivity layer made of the perovskite organic-inorganic hybrid material capable of being prepared through the solutions, and according to the planar heterojunction solar cell device, the anode interface layer and the cathode interface layer are prepared through organic material solutions. According to the method, the problem that energy consumption is high in the cell device machining process is effectively solved, large-scale production is achieved, and high efficiency is achieved; the defects that in the prior art, the inorganic material needs to be machined at high temperature and the cost of the materials in the organic solar cell is high are overcome. The novel material and the new method can be applied to solar cells.

Description

technical field [0001] The invention belongs to the technical field of photoelectric devices, and in particular relates to a solution-processed organic-inorganic planar heterojunction solar cell and a solution-processed preparation method thereof. Background technique [0002] With the increasing global demand for energy, the depletion of traditional energy sources such as oil and coal, and the need to protect the earth's ecological environment, more and more scientists around the world are focusing their research on inexhaustible hydrogen, solar energy, etc. Inexhaustible renewable clean energy. [0003] Mature solar cells based on inorganic materials such as inorganic silicon, gallium arsenide, and indium phosphide have dominated the market. However, due to their high requirements for material purity, problems such as high energy consumption and pollution will occur during processing. And its price is very expensive, so its large-scale application is limited in today's pu...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/48
CPCH10K71/12H10K85/60H10K30/10H10K2102/00Y02E10/549Y02P70/50H10K85/50
Inventor 叶轩立黄飞胡志诚薛启帆孙辰曹镛
Owner SOUTH CHINA UNIV OF TECH
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