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Multi-element oxide and preparation method and application thereof

An oxide and hydroxide technology, applied in the field of solar cell materials, can solve the problems of difficult industrial production of large-area optoelectronic devices, inability to apply flexible solar cells, complex processes, etc., achieve good industrial application prospects, improve photoelectric conversion efficiency, The effect of simple process flow

Pending Publication Date: 2021-06-22
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process disclosed in the above-mentioned patents requires high-temperature treatment with the help of an external heat source, and high-temperature synthesis of a semiconductor hole transport layer or an electron transport layer is not only complicated in process, consumes energy, and high in cost, but also is limited by heating equipment and difficult to industrialize. Large-area optoelectronic devices, especially not applicable to the production of large-area flexible solar cells

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  • Multi-element oxide and preparation method and application thereof
  • Multi-element oxide and preparation method and application thereof
  • Multi-element oxide and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0072] This embodiment provides a multi-component oxide and a preparation method thereof, the preparation method comprising the following steps:

[0073] Accurately weigh 4.86g of Ni(OH) 2 Solid powder is placed in the beaker of 50mL, slowly adds 28wt% ammoniacal liquor and constantly stirs, until solid matter dissolves completely, obtains transparent Ni(NH 3 ) 4 2+ complex ion solution; the Ni(NH 3 ) 4 2+ The complex ion solution was transferred to a 100mL volumetric flask, and the volume was adjusted to 100mL to obtain the Ni(NH 3 ) 4 2+ A solution with a complex ion concentration of 0.05mol / L; use a pipette to measure 0.1mL of the above solution, drop it on the ITO glass substrate, and rotate at a speed of 2000r / min for 35s; then, in an air atmosphere, Two beams of ultraviolet light with wavelengths of 185nm and 254nm were irradiated for 20min to obtain NiO with a thickness of 10nm x film.

[0074] Adopt X-ray diffractometer to prepare NiO to present embodiment x...

Embodiment 2

[0077] This embodiment provides a multi-component oxide and a preparation method thereof, the preparation method comprising the following steps:

[0078]Accurately weigh 14.58g of Ni(OH) 2 Solid powder is placed in the beaker of 50mL, slowly adds 28wt% ammoniacal liquor and constantly stirs, until solid matter dissolves completely, obtains transparent Ni(NH 3 ) 4 2+ complex ion solution; the Ni(NH 3 ) 4 2+ The complex ion solution was transferred to a 100mL volumetric flask, and the volume was adjusted to 100mL to obtain the Ni(NH 3 ) 4 2+ A solution with a complex ion concentration of 0.15mol / L; use a pipette to measure 0.1mL of the above solution, drop it on the FTO glass substrate, and rotate at a speed of 2000r / min for 30s; then, under an ozone atmosphere, Two beams of ultraviolet light with wavelengths of 185nm and 254nm were irradiated for 60min to obtain NiO with a thickness of 38nm x film.

Embodiment 3

[0080] This embodiment provides a multi-component oxide and a preparation method thereof, the preparation method comprising the following steps:

[0081] Take by weighing 10.693g nickel nitrate Ni (NO 3 ) 2 , 16.8786g copper nitrate Cu(NO 3 ) 2 and 16.4421 g of lithium nitrate LiNO 3 , were placed in 50mL beakers, dissolved with deionized water, and then transferred to 100mL volumetric flasks, and the volume was set to 100mL to obtain 0.09mol / L Ni 2+ solution, 0.09mol / / L of Cu 2+ solution and 0.09mol / / L of Li + solution; use a pipette to measure 4.0mL of Ni 2+ solution, 0.5 mL of Cu 2+ solution and 0.5mL of Li + solution into a 50mL beaker to obtain 5.0mL containing Ni 2+ 、Cu 2+ and Li + A mixed solution of ions; use a pipette to measure 0.1mL of the above solution, drop it on the ITO glass substrate, and rotate at a speed of 2000r / min for 30s; then, in an ozone atmosphere, use two beams with wavelengths of 185nm and 254nm ultraviolet light irradiation for 60min to...

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Abstract

The invention provides a multi-element oxide and a preparation method and application thereof, and the preparation method comprises the following steps: irradiating a metal compound raw material in an oxidizing atmosphere by adopting high-energy light to obtain the multi-element oxide; the metal compound raw material comprises a compound containing metal M; the metal M comprises any one of Ni, Co or Zn; according to the preparation method, high-temperature treatment is not needed, the multi-element oxide serving as a hole transport layer material or an electron transport layer material can be obtained at the room temperature, operation is easy, environment friendliness is achieved, energy consumption and raw material cost are low, economic benefits are good, industrial large-scale production is facilitated, and good industrial application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, and in particular relates to a multi-component oxide and its preparation method and application. Background technique [0002] In recent years, all-inorganic perovskite solar cells have attracted extensive attention in the field of photovoltaics. Among them, the use of inorganic nickel oxide (NiO) thin films as hole transport layers in the battery structure has become an important research direction for perovskite batteries. NiO is a transition metal oxide with a typical 3d electronic structure, and its crystal structure is NaCl cubic structure. At room temperature, fully stoichiometric NiO is an insulator and is usually difficult to obtain; non-stoichiometric NiO x Due to the existence of intrinsic acceptor defects, the characteristics of p-type conductors are presented. At present, studies have found that Li doping can increase the hole concentration of NiO material and enhance i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G53/00H01L51/42B82Y30/00B82Y40/00
CPCC01G53/04C01G53/006B82Y30/00B82Y40/00C01P2004/20C01P2004/64C01P2002/72C01P2006/40H10K30/15Y02E10/549Y02P70/50
Inventor 程春廉卿
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA