A kind of phthalocyanine dye-sensitized cspbbr3 photovoltaic cell and its manufacturing method

A photovoltaic cell, dye sensitization technology, applied in photovoltaic power generation, final product manufacturing, sustainable manufacturing/processing, etc., can solve the limitation of CsPbBr3 cell photocurrent and cell energy conversion efficiency, cell short-circuit current, fill factor and open circuit voltage The reduction of characteristic parameters and the increase of electron-hole recombination probability can achieve the effect of increasing the photoresponse range, good protection, and improving energy conversion efficiency.

Active Publication Date: 2019-12-10
周孝银
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But inorganic perovskite CsPbBr3 photovoltaic cells are not perfect
At present, the main problems of CsPbBr3 battery are: (1) The research on CsPbBr3 battery has just started in the world, especially the defects of the surface flatness of the prepared CsPbBr3 film, there are a large number of holes, the existence of these holes will lead to the electron transport of C60, etc. The direct contact between the layer and the hole transport layer increases the recombination probability of electron holes, reduces the parallel resistance of the battery, and leads to a comprehensive decrease in the characteristic parameters of the battery such as short-circuit current, fill factor and open-circuit voltage, thereby reducing the efficiency of the battery.
(2) The light absorption range of CsPbBr3 is within the range of 300-520 nm, and the absorption in the visible light range and near-infrared region of 520-760 nm is weak or almost non-absorbing, which greatly limits the photocurrent and battery energy conversion of CsPbBr3 cells efficiency
(3) In addition, the CsPbBr3 battery also has the problem that CsPbBr3 is sensitive to water and oxygen, which affects its life

Method used

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  • A kind of phthalocyanine dye-sensitized cspbbr3 photovoltaic cell and its manufacturing method

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Embodiment 1

[0065] A phthalocyanine dye-sensitized CsPbBr3 photovoltaic cell and a manufacturing method thereof, the device structure is Glass / ITO / PEDOT:PSS / CsPbBr3 / SubPc / C60 / Bphen / Al from bottom to top.

[0066] An ITO glass substrate is provided, the ITO thickness is preferably 100-300 nm, the light transmittance is greater than 85%, and the sheet resistance is less than 10 Ω, and the CsPbBr3 photovoltaic cell is made according to the following steps:

[0067] (1) Cleaning of the transparent conductive substrate: The transparent conductive substrate is ultrasonically cleaned with acetone, isopropanol, and deionized water for 20 minutes in sequence, dried with nitrogen and irradiated with a UV lamp for 20 minutes;

[0068] (2) Form a hole transport layer on a transparent conductive substrate: take PEDOT:PSS as a hole transport layer, and deposit it on an ITO transparent conductive substrate by spin coating at a speed of 4000 rpm for 40 s, and then at 120°C Annealing on a heating plate fo...

Embodiment 2

[0086] A phthalocyanine dye-sensitized CsPbBr3 photovoltaic cell and a manufacturing method thereof, the device structure is Glass / ITO / PEDOT:PSS / CsPbBr3 / ClAlPc / PCBM / BCP / Ag from bottom to top.

[0087] Provide any of the above-mentioned ITO glass substrates, the ITO thickness is preferably 100-300 nm, the light transmittance is greater than 85%, and the sheet resistance is less than 10 Ω, and the CsPbBr3 photovoltaic cell is produced according to the following steps:

[0088] (1) Cleaning of transparent conductive substrate: same as embodiment one;

[0089] (2) Form a hole transport layer on a transparent conductive substrate: same as embodiment one;

[0090] (3) Form a CsPbBr3 thin film photosensitive layer on the hole transport layer, and prepare the CsPbBr3 thin film photosensitive layer according to the following steps:

[0091]A, synthetic CsPbBr polycrystal: with embodiment one;

[0092] B, configuration CsPbBr Precursor solution: with embodiment one;

[0093] C. Spin-...

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Abstract

The invention relates to the technical field of inorganic perovskite CsPbBr3 thin film photovoltaic cells, in particular to a phthalocyanine dye-sensitized CsPbBr3 thin film photovoltaic cell and a manufacturing method thereof. The phthalocyanine dye-sensitized CsPbBr3 photovoltaic cell comprises a transparent conductive substrate, a hole transport layer, a CsPbBr3 film photosensitive layer, a dye-sensitized layer, an electron transport layer, an electrode modification layer and a reflective electrode. The invention can improve the energy conversion efficiency and service life of the CsPbBr3 photovoltaic cell.

Description

technical field [0001] The invention relates to the technical field of inorganic perovskite CsPbBr3 photovoltaic cells, in particular to a phthalocyanine dye-sensitized CsPbBr3 photovoltaic cell and a manufacturing method thereof. Background technique [0002] Energy crisis and environmental pollution are two prominent problems facing the development of human society today. The photovoltaic industry with solar cells as the core directly converts solar energy into electrical energy, which is one of the cleanest energy available to human beings and is recognized as "green energy". In recent years, the research upsurge of perovskite solar cells from the field of solar energy has attracted the attention of more and more researchers. This type of perovskite material has excellent photoelectric properties, such as high quantum efficiency and large light absorption coefficient. , long carrier migration distance, etc., coupled with its solution processability. All of them show the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/164H10K85/311H10K30/10Y02E10/549Y02P70/50
Inventor 不公告发明人
Owner 周孝银
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