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Organic-inorganic hybrid perovskite phase-change material with adjustable emitted light, and preparation method

A perovskite phase, inorganic technology, applied in the field of organic-inorganic hybrid perovskite structure materials and their preparation, can solve rare problems and achieve the effect of enhanced fluorescence intensity

Active Publication Date: 2015-09-23
NANKAI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there are few studies on the relationship between luminescent properties and structural phase transitions. Therefore, it is of great research significance and potential application value to study the relationship between structural phase transitions and fluorescent properties of organic-inorganic hybrid perovskite structure materials.

Method used

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  • Organic-inorganic hybrid perovskite phase-change material with adjustable emitted light, and preparation method
  • Organic-inorganic hybrid perovskite phase-change material with adjustable emitted light, and preparation method
  • Organic-inorganic hybrid perovskite phase-change material with adjustable emitted light, and preparation method

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Embodiment 1

[0017] Embodiment 1, with 1.00 millimolar Pb (NO 3 ) 2 ·3H 2 O, 5.00 mmol NaCl, 10 mL of a mixed solvent of formic acid and N,N-dimethylformamide (DMF) (volume ratio 1:2) were placed in a 25 mL stainless steel reaction kettle lined with PTFE , reacted at a reaction temperature of 130-150° C. for 72 hours, and cooled to room temperature by program to obtain colorless and transparent hexagonal flaky crystals, which were washed and vacuum-dried to obtain the target product. Especially when the reaction temperature is 140°C, the effect is the most ideal.

[0018] The product was characterized using the following instruments and methods:

[0019] 1. The high-temperature phase structure test is completed on the Rigaku SCX-mini single crystal diffractometer, and the selected size is 0.20×0.20×0.20mm 3 The crystal was used for single crystal structure analysis, using Mo-Kα rays monochromated by graphite monochromator ( ) as the incident light source, at 293(2)K with to collect...

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Abstract

The invention discloses an organic-inorganic hybrid perovskite phase-change material with adjustable emitted light, and a preparation method. The preparation method comprises the following steps: putting lead nitrate and sodium chloride into a reaction still according to a certain proportion; adding a mixed solvent of formic acid and DMF according to a certain proportion; carrying out a reaction at the temperature of 130 to 150 DEG C; cooling to room temperature through programmed cooling, so as to obtain colorless and transparent hexagonal flat crystals; collecting and washing the hexagonal flat crystals; carrying out vacuum drying to obtain the target product. The phase-change material has the advantages that the phase-change temperature of the phase-change material is about the room temperature; the fluorescence radiation color of the phase-change material can be changed through temperature adjustment, and is very sensitive to temperature when the environment temperature is about the room temperature, so that the organic-inorganic hybrid perovskite phase-change material can be used for qualitative temperature detection.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, and relates to an organic-inorganic hybrid perovskite structure material with a phase transition temperature near room temperature and its preparation. The material can be used for qualitative temperature detection. Background technique [0002] In recent years, organic-inorganic hybrid perovskite structure materials have attracted extensive attention from scientists due to their superior properties in optics, electricity, and magnetism. Organic-inorganic hybrid perovskite structure materials combine the advantages of inorganic components and organic components. Inorganic components can provide a rigid framework for the structure, high electron mobility and thermal stability; organic components can regulate Material structure and properties. At present, the research on the inorganic part of organic-inorganic hybrid perovskite structure materials mainly focuses on the fourth main group, suc...

Claims

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Application Information

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IPC IPC(8): C09K11/06G01K11/12
Inventor 卜显和姜雪赵炯鹏韩松德
Owner NANKAI UNIV
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