Perovskite solar cell and preparation method thereof

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

Active Publication Date: 2018-01-09
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

[0038] A perovskite solar cell, such as figure 1 shown, in turn comprising conductive glass or flexible 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:

[0039] 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;

[0040] B. NiO x Preparation of the hole transport layer 2: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving lithium nitrate and nickel nitrate in deionized water to prepar...

Embodiment 2

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

[0048] A. The treatment of ITO conductive PI substrate 1: the square resistance of ITO is 8Ω, and the transmittance is 86%. Ultraviolet lamp, carry out ultraviolet ozone treatment to it, after finishing, take out standby;.

[0049] B. NiO x Preparation of the hole transport layer 2: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving lithium nitrate and nickel nitrate in deionized water to prepare 0.1mol / L lithium nitrate and nickel nitrate solution, and mixed with yttrium nitrate solution, adding sodium hydroxide solution, adjusting the pH value to 10 to obtain a s...

Embodiment 3

[0056] A perovskite solar cell, such as figure 1 As shown, including 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 ITO conductive glass, and its specific preparation steps are as follows:

[0057] A. Treatment of ITO conductive glass lining 1: The square resistance of ITO is 8Ω, the transmittance is 86%, and the transmittance is 86%. 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;

[0058] B. NiO x Preparation of the hole transport layer 2: dissolving yttrium oxide in nitric acid to prepare 0.1mol / L yttrium nitrate solution, dissolving lithium nitrate and nickel nitrate in deionized water to prepare 0....

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Abstract

The invention belongs to the field of photovoltaic materials and particularly relates to a perovskite solar cell and a preparation method thereof. The perovskite solar cell sequentially comprises a conductive glass substrate, a NiOx hole transport layer, a perovskite absorption layer, an electron transport layer, a buffer layer and a metal electrode layer which are sequentially stacked from bottomto top; and various layers in the perovskite solar cell all are prepared by adopting a low-temperature solution method, wherein the NiOx hole transport layer is doped with Y<3+>, Ni<+> and Li<+>. Thepreparation process is simple, and the obtained perovskite solar cell is stable in performance, small in hysteresis effect and suitable for industrial 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): H01L51/42H01L51/44H01L51/48H01L51/00
CPCY02E10/549
Inventor 罗伟王永磊庞茂印胡臻玉曹原张江峰田绍振周银波胡葆华
Owner VALIANT CO LTD
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