Nonlinear optical crystal 1-ethyl-3-methylimidazol lead tribromide and growing method thereof

A technology of methylimidazolium lead tribromide and nonlinear optics, applied in the field of optical crystal materials and their growth, can solve the problems of large light propagation loss, low thermal stability of organic materials, and difficulty in optical integration

Inactive Publication Date: 2012-02-01
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, inorganic crystals are the first class of nonlinear optical materials studied and used by people. Although the crystal growth technology of these materials has become increasingly mature, there are still obvious shortcomings: such as expensive, easy to damage, and can only be used Single crystal materials work, difficult to achieve optical integration
Although organic materials have nonlinear optical coefficients 1-2 orders of magnitude higher than inorganic crystals, large optical damage thresholds (up to GW / cm 2 ), ultra-fast response time (sub-picosecond to femtosecond) and other advantages, but the problems of low thermal stability, poor repeatability and large light propagation loss of organic materials have not been fully resolved

Method used

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  • Nonlinear optical crystal 1-ethyl-3-methylimidazol lead tribromide and growing method thereof
  • Nonlinear optical crystal 1-ethyl-3-methylimidazol lead tribromide and growing method thereof
  • Nonlinear optical crystal 1-ethyl-3-methylimidazol lead tribromide and growing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Compound (C) was synthesized by aqueous solution method 6 h 11 N 2 )PbBr 3 :

[0025] Raw materials used:

[0026] drug name purity factory mass (mg) Number of moles (m mol) C 6 h 11 N 2 Br ﹥99% Lanhua Institute 2649．68 8 Pb(NO 3 ) 2 AR Sinopharm Chemical Reagent Co., Ltd. 6114.24 32

[0027] Its chemical reaction equation is:

[0028] C 6 h 11 N 2 Br+ 3Pb(NO 3 ) 2 (C 6 h 11 N 2 )PbBr 3

[0029] The above-mentioned raw materials were weighed according to the above-mentioned dosage, dissolved in water respectively, and the 1-ethyl-3-methylimidazolium bromide salt solution was poured into the stirred Pb(NO 3 ) 2 In the solution, heat and stir at 45°C for 40 minutes to make it fully react, and the obtained white powder is (C 6 h 11 N 2 )PbBr 3 compound.

[0030] Utilize MiniflexII type X-ray diffractometer to carry out X-ray diffraction analysis to powder, and in CCDC database (C 6 h 11 N 2 )PbB...

Embodiment 2

[0033] Growth by solution evaporation at room temperature (C 6 h 11 N 2 )PbBr 3 Crystal:

[0034] drug name purity factory mass (mg) Number of moles (m mol) C 6 h 11 N 2 Br ﹥99% Lanhua Institute 2649．68 8 Pb(NO 3 ) 2 AR Sinopharm Chemical Reagent Co., Ltd. 6114.24 32

[0035] After weighing the above-mentioned raw materials according to the above-mentioned dosage, the Pb(NO 3 ) 2 The solution was stirred on a magnetic stirrer, and then the solution dissolved in 1-ethyl-3-methylimidazolium bromide was poured into Pb(NO3 ) 2 In the solution, heat and stir at 45°C for 40 minutes to allow it to fully react, put the stirred solution in a solution at 50°C for 24 hours, filter the white precipitate in the solution at 50°C, and cool the clear liquid naturally to At room temperature, the precipitated crystals were filtered off at room temperature to obtain a saturated solution, which was divided into multiple 25ml small beakers a...

Embodiment 3

[0037] Transmittance test

[0038] Choose a good quality single crystal with a thickness of about 0.4mm, and carry out the transmission spectrum test. Adopt Perkin-Elmer UV-VIS-NIR Spectrometer (Lambda-35) spectrophotometer to measure the crystal transmission spectrum in the ultraviolet-visible (190-1100nm) band, such as image 3 a, use a Perkin-Elmer Lambda-900 UV-VIS-NIR Spectrometer to measure the transmission spectrum of the crystal in the infrared band, such as image 3 b, The measured transmission range of the crystal is: 0.35-2.2 μm.

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Abstract

The invention discloses a novel organic-inorganic hybrid nonlinear optical crystal 1-ethyl-3-methylimidazol lead tribromide and a growing method thereof. The nonlinear optical crystal has a chemical formula of (C6H11N2)PbBr3 and belongs to an orthorhombic crystal system, and the space group is P212121. The 1-ethyl-3-methylimidazol lead tribromide crystal is grown at room temperature by adopting a solution evaporation method, the permeation range is 0.35-2.2 mu m, the powder frequency-doubling performance of the crystal is equivalent to that of 4 times the amount of KDP (potassium dihydrogen phosphate), and the crystal has a phase-matching capability. Besides, the crystal can be used for the nonlinear optical field, and enriches the research content of nonlinear optical materials.

Description

technical field [0001] The present invention relates to an optical crystal material and its growth method, in particular to a novel organic-inorganic hybrid nonlinear optical crystal 1-ethyl-3-methylimidazolium lead tribromide and its crystal growth method. Background technique [0002] The 21st century is an era of highly developed information, and people have higher and higher requirements for information transmission, storage, exchange and processing. Due to its inherent defects, the electronic information transmission method restricts the wide application of electronic information systems in the future society in terms of speed, capacity, space compatibility and information detection accuracy. In order to overcome the bottleneck effect of electronics, it has become an inevitable development trend of information science engineering to use photons instead of electrons for data collection, storage and processing. Optoelectronics and photon technology, which use photons as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/54C30B7/14
Inventor 罗军华陈天亮孙志华金成国洪茂椿
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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