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A kind of high-efficiency inorganic perovskite solar cell and its preparation method

A technology of solar cells and inorganic calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as thermal instability and decomposition of perovskite materials, and achieve the effects of improving practicality, simplifying processes, and simple processes

Active Publication Date: 2020-03-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the most widely studied organic-inorganic hybrid perovskite materials suffer from significant thermal instability, which leads to the decomposition of perovskite materials.

Method used

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  • A kind of high-efficiency inorganic perovskite solar cell and its preparation method
  • A kind of high-efficiency inorganic perovskite solar cell and its preparation method
  • A kind of high-efficiency inorganic perovskite solar cell and its preparation method

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Embodiment 1

[0041] The battery structure of this implementation example is as figure 1 , including a substrate, an electron transport layer, a perovskite material light absorption layer, a hole transport layer, and an electrode. The thickness of the perovskite material light absorption layer is about 200nm. Wherein the hole transport layer is Spiro-OMeTAD.

[0042] The preparation method on the indium tin oxide (ITO) substrate in the present embodiment comprises the following steps:

[0043] (1) Use acetone, detergent / deionized water, deionized water, and isopropanol to ultrasonically clean the indium tin oxide (ITO) glass substrate for 20 minutes, then dry it with nitrogen gas, and then treat it with UV-ozone for 20 minutes.

[0044] (2) The tin dioxide solution was taken out from the refrigerator, stirred at room temperature for 20 minutes, and filtered through a 0.45ul organic filter head. Place the substrate well, drop the filtered tin dioxide solution, and spin the process to accel...

Embodiment 2

[0053] The battery structure of this embodiment includes five parts: a substrate, an electron transport layer, a perovskite material light absorption layer, a hole transport layer, and an electrode. The thickness of the perovskite material light absorption layer is about 200 nm. Wherein the hole transport layer is NiOx.

[0054] The preparation method on the indium tin oxide (ITO) substrate in the present embodiment comprises the following steps:

[0055] (1) Use acetone, detergent / deionized water, deionized water, and isopropanol to ultrasonically clean the indium tin oxide (ITO) glass substrate for 20 minutes, then dry it with nitrogen gas, and then treat it with UV-ozone for 20 minutes.

[0056] (2) The NiOx solution was stirred at 90°C for 1 h, and filtered through a filter head. Place the substrate well, drop the filtered nickel oxide solution, and the rotation process is accelerated to 3000rpm within 3 seconds, and kept for 30 seconds. The spin-coated wet film was anne...

Embodiment 3

[0063] The battery structure of this embodiment includes five parts: a substrate, an electron transport layer, a perovskite material light absorption layer, a hole transport layer, and electrodes. The light absorbing layer of perovskite material is prepared by scraping method.

[0064] The preparation method on the indium tin oxide (ITO) substrate in the present embodiment comprises the following steps:

[0065] (1) Use acetone, detergent / deionized water, deionized water, and isopropanol to ultrasonically clean the indium tin oxide (ITO) glass substrate for 20 minutes, then dry it with nitrogen gas, and then treat it with UV-ozone for 20 minutes.

[0066] (2) The tin dioxide solution was taken out from the refrigerator, stirred at room temperature for 20 minutes, and filtered through a 0.45ul organic filter head. Place the substrate well, drop the filtered tin dioxide solution, and spin the process to accelerate to 3000rpm within 3 seconds and keep it for 30 seconds. The spi...

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Abstract

The invention discloses a one-step solution method for preparing a high-efficiency planar heterojunction inorganic perovskite solar cell and a preparation method thereof. The perovskite solar cell includes a substrate, an electron transport layer, a perovskite material light absorption layer, and a hole transport layer. And five parts of the electrode. The preparation method of the present invention comprises the following steps: substrate preparation, cleaning and treatment; preparation of tin dioxide electron transport layer by spin coating; preparation of perovskite material precursor solution; spin coating or scrape coating or printing method and Preparation of perovskite material thin films by flash annealing process to obtain high-quality perovskite material light absorption layer; preparation of 2,2',7,7'-tetra[N,N-bis(4-methoxyphenyl)amino] ‑9,9'‑spirobifluorene solution and deposition of 2,2',7,7'‑tetrakis[N,N‑di(4‑methoxyphenyl)amino]‑on perovskite light absorbing layer 9,9'‑spirobifluorene hole transport layer; electrode prepared by evaporation. The product of the invention has the advantages of high thermal stability, simple process, high efficiency, etc., and has important application prospects.

Description

technical field [0001] The invention belongs to the field of optoelectronic devices, and in particular relates to the preparation of high-efficiency inorganic planar heterojunction CsPbI by a one-step solution method 2 Br perovskite solar cell and its preparation method Background technique [0002] Among the existing new energy technologies, photovoltaic power generation is undoubtedly one of the most promising directions. A solar cell is a photoelectric device that converts solar energy into electrical energy. At present, traditional solar cells are mainly made of inorganic materials, such as monocrystalline silicon, gallium arsenide, copper indium gallium selenide, etc. But in terms of cost and efficiency, and the pollution and energy consumption problems in the manufacturing process have affected its further development, so it is particularly important to research and develop new solar cells with high efficiency and low cost. [0003] In recent years, metal halide per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/40H10K30/15H10K2102/00Y02E10/549
Inventor 阳军亮郜雅馨董亚男王春花张楚俊童思超
Owner CENT SOUTH UNIV