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Perovskite solar cell, double-layer metal electrode and preparation method thereof

A technology of solar cells and double-layer metals, applied in circuits, electrical components, electrical solid devices, etc., can solve the problem of low stability of metal electrodes and achieve the effect of improving stability

Active Publication Date: 2019-10-01
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above technical deficiencies, propose a double-layer metal electrode for perovskite solar cells and its preparation method, and solve the technical problem of low stability of metal electrodes in perovskite solar cells in the prior art

Method used

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  • Perovskite solar cell, double-layer metal electrode and preparation method thereof
  • Perovskite solar cell, double-layer metal electrode and preparation method thereof
  • Perovskite solar cell, double-layer metal electrode and preparation method thereof

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Embodiment 1

[0028] Such as figure 2 As shown, it is the interface SEM photo and EDS energy spectrum analysis diagram of the perovskite solar cell based on Bi / Ag and Bi / Mo double-layer metal electrodes, wherein, figure 2 a is a Bi / Ag double-layer metal electrode, that is, the first metal film layer is a 20nm thick Bi metal layer, and the second metal film layer is a 150nm thick Ag metal layer; figure 2 b is a Bi / Mo double-layer metal electrode, that is, the first metal thin film layer is a Bi metal layer with a thickness of 20 nm, and the second metal thin film layer is a Mo metal layer with a thickness of 500 nm.

Embodiment 2

[0030] Five sets of perovskite solar cells were prepared under the same conditions. The inability of the five sets of perovskite solar cells is: the first set of single-layer Ag metal electrodes; the second set of double-layer metal electrodes, and the first layer is Bi Metal layer, the second layer is Ag metal layer, the thickness of Bi metal layer is 10nm; the third group is double-layer metal electrode, and the first layer is Bi metal layer, the second layer is Ag metal layer, and the thickness of Bi metal layer is 80nm ; The fourth group is a double-layer metal electrode, and the first layer is a Bi-Sn alloy metal layer, the second layer is an Ag metal layer, and the thickness of the Bi-Sn alloy metal layer is 10nm; the fifth group is a double-layer metal electrode, and The first layer is a Bi-Cu alloy metal layer, the second layer is an Ag metal layer, and the thickness of the Bi-Cu alloy metal layer is 10nm.

[0031] Select an area of ​​1cm 2 The above five groups of pe...

Embodiment 3

[0033]Taking four groups of halide perovskites (CH 3 NH 3 PB 3 ) film at 35°C and 70% humidity, choose different covering methods, and measure the decomposition products (PbI 2 ), such as image 3 Shown, from bottom to top are the XRD patterns of the first to eighth. Among them, the first one is: the first group of halide perovskite films were placed under the standard metal Ag electrode (which is equivalent to not covering Bi) for two days; the second one was: the second group of halide perovskite films were exposed to Bi The film is covered for two days, which is equivalent to that the first metal film layer is a Bi metal film layer, and the second metal film layer is an Ag metal film layer; Two days, it is equivalent to the first metal film layer is a Bi-Sn alloy film, the second metal film layer is an Ag metal film layer; the fourth is: the fourth group of halide perovskite films covered by Bi-Cu metal film Two days, it is equivalent to that the first metal film layer...

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Abstract

The invention discloses a perovskite solar cell, a double-layer metal electrode for the perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a glass substrate, a transparent conductive electrode, a hole transport layer, a perovskite thin film, electron transport layer and double-layer metal electrode; the double-layer metal electrode includes a first metal thin film layer and a second metal thin film layer, and its preparation method includes: depositing a layer of the first metal thin film layer on one side of the electron transport layer, A second metal thin film layer is deposited on the first metal thin film layer. In the present invention, a layer of chemically inert first metal thin film layer is deposited in low-temperature vacuum on the electron transport layer, and a second metal thin film layer with high conductivity is arranged on the first metal thin film layer, which can reduce photoelectric conversion On the basis of efficiency, it can effectively isolate the penetration of moisture and reduce the chemical corrosion of the second metal thin film layer, which is beneficial to improve the stability of the perovskite solar cell.

Description

technical field [0001] The invention relates to the preparation technology of technical solar cells, in particular to a perovskite solar cell, a double-layer metal electrode for the perovskite solar cell and a preparation method thereof. Background technique [0002] With the increasing shortage of energy, people pay more and more attention to the research of new energy, especially solar cells. Traditional silicon cells are relatively expensive, consume a lot of energy and cause pollution in the manufacturing process, while the new generation of dye-sensitized cells and organic solar cells are too inefficient and have poor stability, so they are still industrialized. There are many problems. [0003] Since the first report in 2009, perovskite solar cells have been favored by researchers for their ultra-low material cost and solution preparation process, and the energy conversion efficiency has increased from the initial 3.8% to 22.1%. With the deepening of research, the ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/60H10K30/10H10K30/81H10K30/50Y02E10/549
Inventor 陈炜陈锐吴邵航
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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