Chelated perovskite material, film, device, and preparation method and application thereof

A perovskite material and perovskite technology, applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., to achieve the effect of improving quality and stability, convenient source, and diverse application methods

Pending Publication Date: 2020-07-10
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still necessary to solve the stability of the perovskite material itself, as well as the optimization and design of the device structure

Method used

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  • Chelated perovskite material, film, device, and preparation method and application thereof
  • Chelated perovskite material, film, device, and preparation method and application thereof
  • Chelated perovskite material, film, device, and preparation method and application thereof

Examples

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Embodiment 1

[0039] Step 1. Preparation of metal chelate of diethyldithiocarbamate

[0040] At room temperature, 10 mmol of lead nitrate Pb(NO 3 ) 2 and 20mmol of sodium diethyldithiocarbamate trihydrate Na(DDTC) 3H 2 O were dissolved in 40 ml of water. Under vigorous stirring, Na(DDTC) 3H 2 The O aqueous solution gradually dropped on the Pb(NO 3 ) 2 in aqueous solution. Continue to stir for half an hour, then suction filtration to obtain a pale yellow precipitate, which is washed several times with deionized water and ethanol. The precipitated product obtained by suction filtration was vacuum-dried at 60°C overnight to finally obtain the desired lead dimethyldithiocarbamate metal chelate lead salt Pb(DDTC) 2 product.

[0041] Except for sodium dimethyldithiocarbamate, other corresponding metal chelates of dimethyldithiocarbamate all adopt the same synthesis method above. For example, copper diethyldithiocarbamate, zinc diethyldithiocarbamate, cobalt diethyldithiocarbamate, nickel...

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Abstract

The invention relates to a chelated perovskite material, a film, a device, and a preparation method and application thereof. The catalyst is prepared by adding a chelating agent into a perovskite solution, wherein the chelating agent comprises a complexing agent or chelating agent capable of generating coordination with metal ions by coordination atoms, or a chelate or complex formed by coordination reaction of the complexing agent or chelating agent and the corresponding metal ions; according to the material, body defects and surface defects of the perovskite thin film are effectively passivated, and non-radiative recombination of carriers is reduced, so that the efficiency and long-term operation stability of the perovskite solar cell are effectively improved.

Description

technical field [0001] The invention relates to a method for using a chelating agent to chelate a perovskite material, so as to improve the stability of a perovskite thin film, and to improve the photoelectric efficiency and light stability of a perovskite battery. In particular, a chelated perovskite material, thin film, device and preparation method and application thereof are provided. Background technique [0002] At present, the energy crisis and environmental problems are one of the important problems that need to be solved urgently in the world. As the most accessible renewable energy, solar energy, compared with other energy sources, is inexhaustible, inexhaustible, safe and environmentally friendly, and is the most important part of new energy. Solar cells directly convert light energy into electrical energy through photoelectric or photochemical effects, which play an important role in improving energy crisis and resource scarcity. Among them, perovskite solar ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K85/30H10K30/30Y02E10/549
Inventor 杨化桂何敬敬杨双侯宇
Owner EAST CHINA UNIV OF SCI & TECH
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