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Novel photoelectric conversion composite material sol and preparation method thereof

A composite material and photoelectric conversion technology, applied in the direction of photovoltaic power generation, circuits, electrical components, etc., to achieve the effect of wide range of preparation process conditions, good environmental stability, and reduced size effect

Inactive Publication Date: 2017-04-19
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can also be used as inorganic cations of perovskite photoelectric conversion materials or light absorbing materials, and form new photoelectric conversion materials with lead halide, which is expected to improve the environmental stability and photoelectric conversion efficiency of perovskite photoelectric conversion materials at the same time. Relevant research and exploration have not yet been carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 246g (6mol) of acetonitrile, 8.29g (0.08mol) of methanol solution of methylamine with a concentration of 30% by mass percentage and 46.1g (0.1mol) of lead iodide respectively in a stirred 500mL glass reactor, at 60-80 Stir at ℃ for 2 h until completely dissolved, then add 6.95 g (0.02 mol) of hexachlorocyclotriphosphazene, continue stirring for 24 h to obtain N 3 P 3 Cl 5 PB 2 Cl solution; then add 46.1g (0.08mol) of hydroiodic acid with a concentration of 50% by mass, continue to stir and react for 12 h, and cool to room temperature to obtain N 3 P 3 Cl 5 PB 2 Cl and CH 3 NH 3 PB 3 Mix light absorbing solution.

[0042] Add 29.2 g (0.05 mol) of magnesium methoxide solution with a mass percent concentration of 20% to the above reaction solution, and react the magnesium methoxide with water for 4 hours to form a magnesium oxide nanoparticle sol with a particle size of 10 nm. Continue to add absolute ethanol to PbI 2 Saturated and precipitated, the sol was ...

Embodiment 2

[0044] Add 365.5g (5mol) of dimethylformamide, 5.18g (0.05mol) of methanol solution of methylamine with a concentration of 30% by mass and 46.1g (0.1mol) of lead iodide in a stirred 500mL glass reactor. , stirred at 60-80°C for 2h until completely dissolved, then added 17.4g (0.05mol) of hexachlorocyclotriphosphazene, and continued stirring for 24 h to obtain N 3 P 3 Cl 5 PB 2 Cl solution; then add 28.8g (0.05mol) of hydroiodic acid with a concentration of 50% by mass, continue to stir and react for 16 h, and cool to room temperature to obtain N 3 P 3 Cl 5 PB 2 Cl and CH 3 NH 3 PB 3 Mix light absorbing solution.

[0045] Add 29.2 g (0.05 mol) of magnesium methoxide solution with a mass percent concentration of 20% to the above reaction solution, and react the magnesium methoxide with water for 4 hours to form a magnesium oxide nanoparticle sol with a particle size of 10 nm. Continue to add absolute ethanol to PbI 2 Saturated and precipitated, the sol was slightly tu...

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PUM

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Abstract

The invention relates to a novel photoelectric conversion composite material sol and a preparation method thereof; the method comprises the following steps: firstly using cyclophosphazene halide and methylamine to mix so as to prepare a perovskite type photoelectric conversion composite material sol; the novel photoelectric conversion composite material sol comprises lead halide, cyclophosphazene halide, methylamine halogen acids salt, a dehydration catalyst and an organic solvent; the method uses the cyclophosphazene halide to prepare the novel perovskite photoelectric conversion material, and the preparation technology condition scope is wide; the synthesis photoelectric conversion material is better in environment stability, and can expand the luminous absorption wavelength scope for sunlight and improve the photoelectric conversion efficiency by 1.8-2.2%.

Description

technical field [0001] The invention relates to a novel photoelectric conversion composite material sol and a preparation method thereof, especially to prepare a perovskite-type photoelectric conversion composite material sol by mixing cyclophosphazene halide and methylamine, so as to adjust the band gap and Improving photoelectric conversion efficiency belongs to the field of new energy and new materials. [0002] technical background [0003] Solar cells based on organic metal halide perovskite structured light-absorbing materials are called perovskite solar cells. At present, their photoelectric conversion efficiency has exceeded 20%, and it is expected to reach 50% in the future. Perovskite solar cells are usually composed of five parts: transparent conductive glass, dense layer, perovskite light absorbing layer, hole transport layer, and metal back electrode. The thickness of the perovskite light-absorbing layer is generally 200-600nm, and its main function is to absorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46
CPCH10K85/30Y02E10/549
Inventor 李建生刘炳光何涛王少杰朱秋雨白静伊
Owner TIANJIN VOCATIONAL INST