Hybrid nanostructured materials based in II-VI semiconductors

a technology of nanostructured materials and semiconductors, applied in the field of organic-organic-organic hybrid composites, can solve the problems of restricting use and several limitations in the ability to change optical properties, and achieve significant quantum confinement effects and advantages for device making

Inactive Publication Date: 2010-07-13
RUTGERS THE STATE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]This need is met by the present invention. Applicants have discovered a new type of quantum confined nanostructures that are not only capable of modifying optical, electronic and other properties of a semiconductor on the same large scale as colloidal dots, but also

Problems solved by technology

The great challenge, however, is to generate uniformly sized dots and to organize them into periodic arrays in order to obtain sharp line width, and control over intensity and other o

Method used

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  • Hybrid nanostructured materials based in II-VI semiconductors
  • Hybrid nanostructured materials based in II-VI semiconductors
  • Hybrid nanostructured materials based in II-VI semiconductors

Examples

Experimental program
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Effect test

example 1

Preparation of [α-ZnTe(Ethylenediamine)1 / 2] I

[0042]To a 23 mL acid digestion bomb was charged 0.272 g ZnCl2 (2 mmol), 0.128 g Te (1 mmol) and 6 mL ethylene-diamine. The mixture was allowed to react at 200° C. for a period of three days. A solid product was collected, washed with 30 and 80% ethanol, and then dried in anhydrous ethyl ether giving brownish column-like crystals of the title compound in 90.0% yield.

example 2

Preparation of [β-ZnTe(Ethylenediamine)1 / 2] II

[0043]A reaction mixture of 0.595 g Zn(NO3)2.6H2O (2 mmol), 0.128 g Te (1 mmol), and ethylenediamine (6 mL, 90 mmol) was heated in a 23 mL acid digestion bomb at 190° C. for three days. A solid product was collected, washed with 30 and 80% ethanol, and dried in anhydrous ethyl ether, affording brownish platelike crystals of the title compound (92.4% yield).

example 3

Preparation of [ZnTe(1,3-Propanediamine)1 / 2] III

[0044]The title compound was prepared as in Example 2 with the exception that 1,3-propanediamine (5 mL, 60 mmol) was used in place of ethylenediamine and the reaction temperature was 200° C. The title compound was obtained in 91.3% yield.

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PUM

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Abstract

Hybrid crystalline organic-inorganic quantum confined systems are disclosed, which contain alternating layers of a bifunctional organic ligand and a II-VI semiconducting chalcogenide, wherein the semiconducting chalcogenide layers contain chalcogenides have the formula MQ, in which M is independently selected from II-VI semiconductor cationic species and Q is independently selected from S, Se and Te; and the bifunctional organic ligands of each organic ligand layer are bonded by a first functional group to an element M of an adjacent II-VI semiconducting chalcogenide layer and by a second functional group to an element M from the adjacent opposing II-VI semiconducting chalcogenide layer, so that the adjacent opposing II-VI semiconducting chalcogenide layers are linked by the bifunctional organic ligands of the organic ligand layers. Optical absorption experiments show that these systems produce a significant blue shift in their optical absorption edges, 1.2-1.5 eV, compared to a shift of 1.0 electron volt by the best grown II-VI or II-V semiconducting quantum colloidal dots. In addition, the II-VI confined layers in these systems possess a perfectly periodic arrangement.

Description

[0001]This application claims the benefit of Provisional application Ser. No. 60 / 282,967, filed Apr. 11, 2001.GOVERNMENT SUPPORT [0002]The development of this invention was supported in part by National Science Foundation Grant DMR-0094872. The Government has certain rights in the invention.<?insert-end id="INS-S-00002" ?>BACKGROUND OF THE INVENTION[0003]The present invention relates to organic-inorganic hybrid composites which have unique and useful electronic and optical properties. More specifically, the invention relates to II-VI semiconducting chalcogenides with modified structures and properties based upon the incorporation of organic components via coordination or covalent bonds.[0004]Group II-VI semiconducting chalcogenide compounds such as CdTe and ZnSe are of great interest currently for use in semiconductor devices because of their relatively wide band gaps. Semiconductor nanostructures with uniform arrangement, such as periodic arrays of quantum dots, are necessary...

Claims

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Application Information

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IPC IPC(8): H01L31/00C07F13/00H01L51/30
CPCC07F13/005H10K85/00
Inventor LI, JINGHUANG, XIAOYING
Owner RUTGERS THE STATE UNIV
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