Method for preparing single crystals through electrical stimulation induction
An electrical stimulation, single crystal technology, applied in the field of electrical stimulation induced single crystal preparation, can solve the problem of high requirements for preparation conditions and achieve the effect of easy preparation
Active Publication Date: 2020-05-19
SHENZHEN UNIV
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[0007] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a method for preparing single crystals induced by electrical stimulation, aiming to solve the technical problem that the existing single crystal growth methods have high requirements for preparation conditions
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[0035] The present invention provides a method for preparing single crystal induced by electrical stimulation. In order to make the purpose, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] A method for preparing a single crystal induced by electrical stimulation, comprising the steps of:
[0037] S10, dissolving the organic semiconductor material in a polar solvent to obtain a sample solution;
[0038] S20. Adding the sample solution dropwise on a conductive substrate rich in atomic-level repeating lattice surfaces, applying a bias voltage and electrical stimulation to the sample solution using a scanning tunneling microscope to prepare a single crystal.
[0039] Based on the fact that the existing single crystal preparat...
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The invention discloses a method for preparing single crystals through electrical stimulation induction. The method comprises the following steps: dissolving an organic semiconductor material in a polar solvent to obtain a sample solution, then dropwise adding the sample solution to a conductive substrate rich in atomic-scale repeated lattice surfaces, and applying bias voltage and electrical stimulation to the sample solution by adopting a scanning tunnel microscope to prepare single crystals. A high-temperature and high-pressure environment is not needed; the two-dimensional single crystalsare prepared only by electrical stimulation under the conditions of room temperature and atmospheric pressure. Through bias voltage and current stimulation applied by a scanning tunnel microscope, thesingle crystals can be easily prepared on a solid-liquid interface, and furthermore, the problem that the single crystals are controlled to be arranged in a required surface morphological conformation by utilizing the property that the prepared single crystals stably exist on the solid-liquid interface only under the current stimulation can be solved.
Description
technical field [0001] The invention relates to the technical field of single crystal preparation, in particular to a method for preparing single crystal induced by electrical stimulation. Background technique [0002] There is only one kind of crystal with repeating period on the space axis, which is called single crystal, and the crystal composed of multiple directions is called polycrystal. Among them, due to the excellent electron transfer characteristics of single crystal, the preparation of single crystal has always been a material hot spots in science. [0003] The methodological development of single crystal preparation relies on the mastery of crystal growth steps. The crystal growth process is mainly divided into two stages: nucleation and crystal growth. Among them, the nucleation stage: the substance is in a molten state or the substance is in a disordered state in the solution The state is that if the environmental conditions are gradually changed (cooling or s...
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Login to View More IPC IPC(8): C30B30/02C30B7/00C30B29/54
CPCC30B7/00C30B29/54C30B30/02
Inventor 李昇隆曾兴明乐雅陈誉
Owner SHENZHEN UNIV