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A lithium, silver co-doped nickel oxide thin film and its application in perovskite solar cells

A solar cell, perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of insufficient electrical conductivity

Active Publication Date: 2020-09-22
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since pure NiO x The conductivity itself is not high enough, therefore, increasing the NiO x The conductivity is of great significance to improve its performance and battery conversion efficiency

Method used

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  • A lithium, silver co-doped nickel oxide thin film and its application in perovskite solar cells
  • A lithium, silver co-doped nickel oxide thin film and its application in perovskite solar cells
  • A lithium, silver co-doped nickel oxide thin film and its application in perovskite solar cells

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Experimental program
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Embodiment 1

[0027] Lithium and silver co-doped NiO x Synthesis of Nanoparticles.

[0028] (1) Weigh Ni(NO 3 ) 2 ·6H 2 O, LiNO 3 and AgNO 3 Add in deionized water and stir to dissolve, then weigh a certain amount of NaOH and dissolve it in water to prepare a NaOH solution with a concentration of 10mol / L.

[0029] (2) Slowly add NaOH solution dropwise to Ni(NO 3 ) 2 ·6H 2 O, LiNO 3 and AgNO 3 In the solution, until the pH reaches 10, stop the dropwise addition. A green suspension was obtained and stirred for 5 minutes.

[0030] (3) Suction filter the obtained suspension to obtain a precipitate, and then disperse the precipitate into deionized water. This step is repeated three times.

[0031] (4) Put the cleaned precipitate into a crucible, and dry it in vacuum at 80°C for 6 hours to obtain a green solid, then put the crucible into a muffle furnace and calcinate at 270°C for 2 hours to obtain black lithium and silver co-doped NiO x The nanoparticle powder is reserved for later ...

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Abstract

The invention provides a preparation method and application of lithium and silver co-doped nickel oxide nanoparticles for perovskite solar cells. By weighing a certain amount of Ni(NO 3 ) 2 ·6H 2 O, LiNO 3 and AgNO 3 Add in deionized water and stir to dissolve, the molar ratio range is 0.989~0.98:0.001~0.005:0.01~0.015, then add NaOH solution dropwise until the pH reaches 9.8~10, after washing and drying, calcining at 270°C to obtain lithium, Silver co-doped nickel oxide nanoparticles. The nanoparticles are prepared in solution and used as a hole transport layer in perovskite solar cells. The invention can effectively improve the photoelectric conversion efficiency of the perovskite battery.

Description

technical field [0001] The invention relates to a lithium and silver co-doped nickel oxide thin film and its application in perovskite solar cells, belonging to the technical field of new material solar cells. Background technique [0002] Organic-inorganic hybrid perovskite materials have the advantages of superior charge transport properties, long carrier diffusion distance, full-spectrum absorption, and high absorption coefficient, which allow this material to effectively absorb sunlight and generate photogenerated light efficiently. carriers while reducing the energy loss in the photoelectric conversion process. Solar cells based on organic-inorganic hybrid perovskite materials have attracted extensive attention due to their rapid improvement in efficiency. Since 2009, its efficiency has increased from 3.8% to over 22%, making it the most active area of ​​research in new solar cells. [0003] Nickel oxide (NiO x ) has been extensively studied as a hole-transporting la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/10H10K2102/00Y02E10/549
Inventor 李璠夏雪峰王晓峰江奕华邹敏华彭家奕
Owner NANCHANG UNIV