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Preparation method of tin-based perovskite solar cell with optimized components and cell

A solar cell and perovskite technology, applied in circuits, electrical components, electrical solid devices, etc., can solve problems such as limiting efficiency, hindering charge extraction, and fast crystallization process, achieving performance and stability improvements, and improving humidity stability , the effect of reducing defect density

Pending Publication Date: 2022-07-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the highest power conversion efficiency (PCE) of TPSCs is in the range of 13.14%, which is still far behind that of LPSCs, and Sn 2+ Easily oxidized to Sn 4+ Considered as an unfavorable phenomenon, it is a bottleneck affecting the long-term stability of TPSCs
Sn perovskite thin films are rich in defects due to fast crystallization process and p-type doping
In addition, the formation energy of tin-based perovskite films is low, and Sn vacancies (V sn ) These defects are prone to ion migration under the action of external forces such as light and electric field, resulting in obvious hysteresis and affecting the long-term stability of PCE
Meanwhile, the one-component ASnX 3 Perovskite faces the problem of energy level mismatch
For example, with PC 61 BM compared to FASnI 3 The low conduction band minimum (CBM) of the
In addition, the open circuit voltage loss (V loss ) largely limits the realization of efficiency
The stability of LPSCs devices is also an outstanding issue

Method used

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  • Preparation method of tin-based perovskite solar cell with optimized components and cell
  • Preparation method of tin-based perovskite solar cell with optimized components and cell
  • Preparation method of tin-based perovskite solar cell with optimized components and cell

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Embodiment 1

[0064] This embodiment provides a method for preparing a tin-based perovskite solar cell with optimized components. A phenethylamine halide salt is introduced into the intrinsic light-absorbing layer of the perovskite as a component dopant to prepare a tin-based perovskite solar cell.

[0065] The molecular structure of phenethylamine halide salt is:

[0066]

[0067] Where: X - is the halogen anion chloride (Cl - ), bromide ion (Br - ), iodide ions (I - ) in any combination.

[0068] Phenethylamine halide salt and phenethylamine halide salt derivative are at least one of phenethylamine hydrochloride, phenethylamine hydroiodide and phenethylamine hydrobromide;

[0069] Phenethylamine halide salts and divalent tin ions Sn in tin-based perovskites 2+ 10~20mol% of tin-based perovskite material is FA x MA 1-x SnI 3-x Br 1-x / FASnI 3 , 0≤x≤1.

[0070] The glass substrate is indium tin oxide ITO glass.

[0071] The hole transport material is PEDOT:PSS or NiO x .

[...

Embodiment 2

[0097] This embodiment provides a method for preparing a tin-based perovskite solar cell with optimized components. A phenethylamine halide salt is introduced into the intrinsic light-absorbing layer of the perovskite as a component dopant to prepare a tin-based perovskite solar cell.

[0098] The molecular structure of phenethylamine halide salt is:

[0099]

[0100] Where: X - is the halogen anion chloride (Cl - ), bromide ion (Br - ), iodide ions (I - ) in any combination.

[0101] Phenethylamine halide salt and phenethylamine halide salt derivative are at least one of phenethylamine hydrochloride, phenethylamine hydroiodide and phenethylamine hydrobromide;

[0102] Phenethylamine halide salts and divalent tin ions Sn in tin-based perovskites 2+ 10~20mol% of tin-based perovskite material is FA x MA 1-x SnI 3-x Br 1-x / FASnI 3 , 0≤x≤1.

[0103] The glass substrate is indium tin oxide ITO glass.

[0104] The hole transport material is PEDOT:PSS or NiO x .

[...

Embodiment 3

[0128] The difference between this embodiment and Embodiment 2 is that the dopant is at least one of 4-trifluoromethylphenethylamine iodide, 4-trifluoromethylphenethylamine bromide, and 4-trifluoromethylphenethylamine chloride , the dopant is introduced into the intrinsic light absorption layer of the perovskite, and the tin-based perovskite solar cell is prepared.

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Abstract

The invention discloses a tin-based perovskite solar cell with optimized components and a preparation method thereof. The tin-based perovskite solar cell structurally comprises an indium tin oxide (ITO) conductive glass layer, an electron transport layer, a perovskite light absorption layer, a hole transport layer and a silver electrode layer in sequence, the material of the electron transport layer is PC61BM. Phenylethylamine halide salt is introduced into the perovskite precursor solution, thin film crystallization is improved, non-radiative recombination is inhibited, and the charge extraction capacity is improved. The phenylethylamine halide salt and the phenylethylamine halide salt derivative remarkably improve the photoelectric property of the tin-based perovskite solar cell, so that the photoelectric conversion efficiency of the tin-based perovskite cell can reach 10.51%, the stability of the prepared tin-based perovskite cell is remarkably improved, and further development of the tin-based perovskite cell is promoted.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a preparation method and application of a component-optimized tin-based perovskite solar cell. Background technique [0002] For so many years, humanity has been searching for an energy source that is not only environmentally sustainable but also commercially viable. The current global electricity demand is about 16TW, and it is expected that by 2050, the electricity demand will exceed 30TW. Therefore, rigorous research is underway to obtain an efficient power generation system, as conventional fossil fuel-burning technologies will not be able to meet the growing electricity demand. Renewable energy sources such as tidal, hydrothermal, geothermal, wind, and solar energy will be the saviors of the energy crisis. Among various energy sources, solar energy is considered to be the most promising and efficient due to its abundant availability. The uniqueness of solar energy can ...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/46H01L51/42
CPCH10K71/15H10K71/12H10K85/649H10K30/20
Inventor 郝锋何良刚汪舒蓉朱玮珂曹志远
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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