Tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell

A technology of solar cells and methyl ammonium, applied in the field of solar cells, can solve the problems of cumbersome production process, high production cost, and resource consumption, and achieve the effects of promoting flatness, low cost, and increasing current intensity

Active Publication Date: 2017-02-08
TAIYUAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new technique involves making certain types of materials called perovcalcum sulfate (PbS) through various processes such as chemical reaction or heat treatments on nanoparticles like quantum dots. These techniques allow for precise control over particle size distribution during manufacturing while maintaining good quality films. Additionally, this new approach allows for more efficient use of raw material compared to previous methods due to its simplified processing steps. Overall these technical results lead to improved energy utilities and reduced greenhouse gas emissions associated with producing batteries containing pervoskites.

Problems solved by technology

In order to enhance the performance of thin films made from materials called pervosolar metal oxides or tetrahedron quantum dots, researchers have developed various methods such as adding electron donors during deposition processes like evaporation, sputtering, atomic force microscope grinding, thermal vapor phase epitaxy, ion implantation into substrates, and others. However, these techniques are complicated and require expensive equipment. Therefore, there remains room for improvement on improving their properties without sacrificing productivity.

Method used

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  • Tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell
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  • Tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell

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Embodiment Construction

[0017] Such as figure 1 As shown, the tin-doped methylammonium lead iodide perovskite solar cell has a planar heterojunction structure: the structure of the solar cell in this embodiment is: ITO / PEDOT:PSS / CH 3 NH 3 sn x Pb 1-x I 3 / PC 60 BM / Al.

[0018] In the battery structure, the thickness of the ITO anode is 100 nm, and the sheet resistance is 10Ω.

[0019] In the battery structure, the thickness of the hole transport layer PEDOT:PSS is 30 nm, which is formed by solution spin coating and then annealed in air. The spin coating rate is 3000 rpm, the spin coating time is 30 s, the annealing temperature is 120 °C, and the annealing time is 10 minutes,

[0020] In the battery structure, the active layer is CH 3 NH 3 sn 0.25 Pb 0.75 I 3 Perovskite thin films prepared from methylamine iodide (CH 3 NH 3 I), lead iodide (PbI 2 ) and tin iodide (SnI 2 ) was dissolved in a mixed solvent of N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) according to the mola...

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Abstract

The invention relates to the field of a solar cell, and particularly to an organic-inorganic hybrid perovskite solar cell. The invention provides a tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell, wherein an active layer is a tin-doped CH3NH3SnxPb1-xI3 perovskite film. The tin-doped CH3NH3SnxPb1-xI3 perovskite film has a planar heterojunction structure. The invention provides a method for preparing the tin-doped CH3NH3SnxPb1-xI3 perovskite solar cell according to a one-step method in which multiple solvent processing procedures are utilized. A high-quality perovskite film is obtained, and high photoelectric conversion efficiency is realized.

Description

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Claims

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Application Information

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Owner TAIYUAN UNIV OF TECH
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