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A perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof

A technology of hole transport layer and perovskite battery, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of reducing the photogenerated current of the device, affecting the performance of the battery, and increasing the probability of electron-hole recombination

Active Publication Date: 2019-01-15
SHAANXI NORMAL UNIV
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Problems solved by technology

[0003] In the prior art, on the one hand, photogenerated carriers will inevitably recombine on the surface and inside due to the properties of the transport layer material during the transport process, resulting in voltage or current loss
On the other hand, there will inevitably be defects in the preparation process of each functional layer material. Carrier capture and recombination centers are easily formed in the interior and interface defects of these films, which increases the recombination probability of electron holes during the transport process and reduces the performance of the device. The photogenerated current; these all affect the performance of the battery

Method used

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  • A perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof
  • A perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof
  • A perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof

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Embodiment 1

[0059] Step 1. Prepare a dispersion of nickel oxychloride nanoparticles

[0060] (1) Ni(NO 3 ) 2 ·6H 2 O, CON 2 H 4 And NH 4 After Cl is mixed according to the molar ratio of 1:3:1, it is fully dissolved in ultrapure water and stirred evenly at 30°C to obtain the precursor solution; the precursor solution is heated in an electric heating constant temperature blast drying box at 100°C The reaction was carried out for 2h to obtain the precursor precipitate; the precursor precipitate was centrifuged at 5000rmp / s for 5min and then dried in a vacuum drying oven at a drying temperature of 45℃ and a drying time of 6h to obtain a dried product; after grinding the dried product, The dried product is calcined in a muffle furnace at 270°C for 2 hours to obtain a calcined product. The calcined product is ground to obtain nickel oxychloride-containing nanoparticles; the nickel oxychloride-containing nanoparticles are dispersed in a volume ratio of 1: In the mixed solution of isopropanol and u...

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Abstract

The invention discloses a perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof. As that perovskite battery take the nickel oxide nanoparticles contain chlorine as a hole transport layer, ammonium chloride is used as a chlorine source in the preparation method, so that the size of the nickel oxide nanoparticles contain chlorine ofthe prepared hole transport layer is controlled below 10nm; As that chloride ion is adsorb on the surface of the nickel oxide, the nickel oxide and the chlorine atom become one body. When the perovskite battery is used, on the one hand, the chloride ion can reduce the defect state of the nickel oxide film and improve the extraction rate of the hole; On the other hand, the chloride ions on the surface of nickel oxide can passivate the interface between the hole transport layer and perovskite layer, which can reduce the recombination of electron holes, so that the charge can be transferred efficiently and the current density of the battery can be increased.

Description

【Technical Field】 [0001] The invention belongs to the field of perovskite batteries, in particular to a perovskite battery containing nickel oxychloride nanoparticles as a hole transport layer and a preparation method thereof. 【Background technique】 [0002] In recent years, solar cells based on organic-inorganic hybrid perovskite materials have shown great attraction and broad development prospects in the photovoltaic field. The specific working principle of the perovskite solar cell is: the electron-hole pair generated by the perovskite absorption of light is separated at the interface, and the positive and negative poles are collected through the hole transport layer and the electron transport layer, and then the path is connected to form a current. Do external work. Therefore, finding an efficient carrier transport medium and solving the problem of recombination of electrons and holes in the transport process has become an effective way to improve the performance of perovski...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K71/125H10K30/00H10K30/10Y02E10/549
Inventor 刘治科袁世豪刘丹文曾银刘生忠
Owner SHAANXI NORMAL UNIV
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