Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low photoelectric conversion efficiency and insufficient stability of solar cells, so as to improve hole transport capacity and photoelectric conversion efficiency , the effect of improving the conductivity

Active Publication Date: 2017-12-15
VALIANT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low photoelectric conversion efficiency and insufficient stability of the above-mentioned solar cells, the present invention provides a perovskite solar cell with high photoelectric conversion efficiency, good stability and small hysteresis effect, and its preparation process is simple

Method used

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

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Embodiment 1

[0039] A perovskite solar cell, such as figure 1 shown, comprising sequentially conductive glass substrate 1, NiO x Hole transport layer 2, perovskite absorption layer 3, electron transport layer 4, buffer layer 5, metal electrode layer 6, conductive glass substrate is selected as FTO conductive glass, and its specific preparation steps are as follows:

[0040] A. Treatment of FTO conductive glass substrate 1: The square resistance of FTO in FTO conductive glass is 14Ω, and the transmittance is 90%. After the substrate is cleaned, put the conductive side up into the UV ozone machine, and set the processing time For 5 minutes, turn on the ultraviolet lamp, carry out ultraviolet and ozone treatment to it, and take it out for later use after completion;

[0041] B. NiO xPreparation of the hole transport layer 2: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving magnesium nitrate and nickel nitrate in deionized water to prepare 0.1m...

Embodiment 2

[0047] A perovskite solar cell, such as figure 1 As shown, including sequentially 1, conductive glass substrate, 2, NiO x Hole transport layer, 3, perovskite absorption layer, 4, electron transport layer, 5, buffer layer, 6, metal electrode layer, conductive glass substrate is selected as FTO conductive glass and its specific preparation steps are as follows:

[0048] A. Treatment of FTO conductive glass substrate: The square resistance of FTO in the FTO conductive glass substrate is 14Ω, and the transmittance is 90%. After the substrate is cleaned, put the conductive surface upward into the ultraviolet ozone machine, set The treatment time is 5 minutes, turn on the ultraviolet lamp, carry out ultraviolet and ozone treatment on it, and take it out for later use after completion;

[0049] B. NiO x Preparation of the hole transport layer: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving magnesium nitrate and nickel nitrate in dei...

Embodiment 3

[0055] A perovskite solar cell, as shown in the figure, including sequentially 1, a conductive glass substrate, 2, NiO x Hole transport layer, 3, perovskite absorption layer, 4, electron transport layer, 5, buffer layer, 6, metal electrode layer, conductive glass substrate is selected as its specific preparation steps of ITO conductive glass as follows:

[0056] A. Treatment of ITO conductive glass substrate: The square resistance of ITO in the ITO conductive glass substrate is 8Ω, and the transmittance is 86%. The time is 5min, turn on the ultraviolet lamp, carry out ultraviolet ozone treatment to it, take out after completion and set aside; B, NiO x Preparation of the hole transport layer: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving copper nitrate and nickel nitrate in deionized water to prepare 0.1mol / L copper nitrate and nickel nitrate solution , and mixed with yttrium nitrate solution, adding sodium hydroxide solution,...

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Abstract

The present invention belongs to the photovoltaic material field and relates to a perovskite solar cell and a preparation method thereof. The perovskite solar cell sequentially comprises a conductive glass substrate, a NiOx hole transporting layer, a perovskite absorption layer, an electron transport layer, a buffer layer and a metal electrode layer which are sequentially stacked from top to bottom, wherein each layer of the perovskite solar cell is made by means of a low-temperature solution method, and the NiOx hole transport layer is co-doped with Y3<+> and Mg<2+>/Cu<2+>. The preparation process of the perovskite solar cell of the present invention is simple; and the obtained perovskite solar cell has stable performance, small hysteresis effect and is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the field of photovoltaic materials, in particular to a perovskite solar cell and a preparation method. Background technique [0002] In recent years, organic-inorganic hybrid perovskite solar cells have developed rapidly, and their photoelectric conversion efficiency has reached about 22%. Perovskite solar cells are rich in raw materials, simple in process, and low in cost. They can be fabricated into flexible cells. It has received extensive attention from academia and industry. [0003] The hole transport layer material affects the light absorption efficiency, interfacial recombination rate and hole transport ability of perovskite solar cells, and directly affects the power generation efficiency, stability and hysteresis effect of perovskite solar cells. NiOx-type hole transport materials are favored in trans-perovskite solar cells, but the traditional high-temperature pyrolysis preparation method not only increases the equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/15H10K30/10Y02E10/549
Inventor 罗伟庞茂印任辉彩胡臻玉张江峰王永磊曹原胡葆华
Owner VALIANT CO LTD
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