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Solar cell and preparation method thereof

A solar cell and electrode technology, which is applied in the field of solar energy, can solve problems such as poor performance and poor contact, and achieve the effects of improving surface roughness, weakening wettability, and improving efficiency

Pending Publication Date: 2019-11-08
上海黎元新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the above technical problems, the object of the present invention is to provide a solar cell, which can solve the problem of poor performance of the reverse perovskite solar cell due to poor contact between the inorganic hole transport material and the perovskite question

Method used

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  • Solar cell and preparation method thereof
  • Solar cell and preparation method thereof
  • Solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] see figure 1 , this example uses low-temperature nickel oxide as the inorganic hole transport material, PCDTBT as the polymer modification material, and MAPbI 3 It is a perovskite absorbing layer material, PCBM and BCP are used as electron transport materials, and silver is used as a counter electrode.

Embodiment approach

[0044] In this example, the surface defects of nickel oxide are passivated by polymer modification materials, the hole extraction ability is improved, and the crystallinity of perovskite is improved by improving wettability, thus significantly improving the short-circuit current and fill factor of the device. Concrete implementation scheme is as follows:

[0045] (1) Preparation of inorganic hole transport layer 2:

[0046]The low-temperature nickel oxide layer was prepared by the spin coating method, and the 20mg / mL low-temperature nickel oxide spin-coating solution was ultrasonically charged for 10 minutes, and filtered with a 0.45um water filter head for later use. During spin coating, spread the spin coating solution on the surface of the clean conductive glass-transparent electrode 1, spin coating at 3000rpm and 2500rpm / s for 30s, and place it on a heating table for 20 minutes at 120°C after spinning.

[0047] (2) Preparation of Polymer Modification Layer 3:

[0048] Pr...

Embodiment 2

[0070] see figure 1 structure, this example uses CuSCN as the inorganic hole transport material, uses P3HT as the polymer modification material, and uses MAPbI 3 It is a perovskite absorbing layer material, PCBM and BCP are used as electron transport materials, and silver is used as a counter electrode.

[0071] In this example, the surface defects of CuSCN are passivated by polymer modification materials, the hole extraction ability is improved, and the crystallinity of perovskite is improved by improving wettability, so the short-circuit current and fill factor of the device are significantly improved. Concrete implementation scheme is as follows:

[0072] (1) Preparation of inorganic hole transport layer 2:

[0073] The CuSCN inorganic hole-transporting layer is prepared by electrochemical deposition, and the preparation includes 12mM copper sulfate, 12mM ethylenediaminetetraacetic acid and 12mM potassium thiocyanate aqueous solution, at the relative Ag / AgCl (3M KCl) elec...

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Abstract

The invention provides a solar cell and a preparation method thereof. The solar cell comprises an electrode, an inorganic hole transport layer, a perovskite layer, an electron transport layer and a counter electrode, wherein a polymer modification layer is disposed between the inorganic hole transport layer and the perovskite layer; and the thickness of the polymer modification layer is 1 nm to 50nm. The invention also provides a method of preparing the above solar cell. The solar cell of the present invention has high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to a solar cell and a preparation method thereof, in particular to a perovskite solar cell and a preparation method thereof, belonging to the technical field of solar energy. Background technique [0002] In just a few years, the energy conversion efficiency of perovskite solar cells has increased from the initial 3.8% to 23.7%, making it comparable to silicon solar cells, copper indium gallium selenide solar cells, and cadmium telluride solar cells. Typical structures of perovskite solar cells include formal structure (transparent electrode / electron transport layer / perovskite layer / hole transport layer) and trans structure (transparent electrode / hole transport layer / perovskite layer / electron transport layer). [0003] At present, many of the highest efficiencies certified internationally are based on devices with formal structures. In contrast, the performance of trans-perovskite solar cells is poor. But on the other hand, trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/10H10K85/111H10K30/10H10K30/80Y02E10/549
Inventor 茹鹏斌毕恩兵陈汉
Owner 上海黎元新能源科技有限公司
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