Samsung Electronics Co., Ltd.

Jung Eun Lim

Eun Joo Jang

Shin Ae Jun

Hyo Sook Jang

Hye Ran Choi

Eun Hwa Lee

Yong Nam Ham

Young Nam Ham

Disclosed herein is a multilayer nanocrystal structure comprising a nanocrystal alloy core comprising two or more nanocrystals and including an alloy interlayer formed at an interface between the two or more nanocrystals, and one or more layers of nanocrystal shells formed sequentially on the surface of the nanocrystal alloy core, wherein the nanocrystal shells each have different band gaps. The multilayer nanocrystal structure can be applied to various electronic devices owing to its advantages of high luminescence efficiency, superior optical stability, and superior chemical stability.

Multilayer nanocrystal structure and method for producing the same

Disclosed herein is a method for the preparation of metal phosphide nanocrystals using a phosphite compound as a phosphorous precursor. More specifically, disclosed herein is a method for preparing metal phosphide nanocrystals by reacting a metal precursor with a phosphite compound in a solvent. A method is also provided for passivating a metal phosphide layer on the surface of a nanocrystal core by reacting a metal precursor with a phosphite compound in a solvent. The metal phosphide nanocrystals have uniform particle sizes and various shapes.

Method for preparing metal phosphide nanocrystal from phosphite compound and method for passivating nanocrystal core with the same

A light emitting diode device includes a light emitting diode chip and a nanocrystal-metal oxide monolith having a nanocrystal-metal oxide composite disposed on a light emitting surface of the light emitting diode chip.

Light emitting diode device using nanocrystal-metal oxide composite and method for fabricating the same

A nanocrystal light-emitting diode with improved structural stability is disclosed. Specifically, the nanocrystal light-emitting diode comprises an excitation source, a nanocrystal-containing light conversion layer and an air layer formed therebetween to be exposed to the outside.

Nanocrystal light-emitting diode

Disclosed herein is a nanocrystal-metal oxide complex. The nanocrystal of the nanocrystal-metal oxide complex is substituted with two or more different types of surfactants which are miscible with a metal oxide precursor and enable maintenance of luminescent and electrical properties of the nanocrystal. The nanocrystal-metal oxide complex exhibits superior optical and chemical stability and secures high luminescent efficiency of the nanocrystal. Accordingly, when the nanocrystal-metal oxide complex is used as a luminescent material of an electroluminescent device, it can improve luminescent efficiency and reliability of products. Further disclosed herein is a method for preparing the nanocrystal-metal oxide complex.

Nanocrystal-metal oxide complex comprising at least two different surfactants and method for preparing the same

Disclosed herein are a nanocrystal, a method for preparing the nanocrystal, and an electronic device comprising the nanocrystal. The nanocrystal comprises a semiconductor nanocrystal core, a non-semiconductor buffer layer surrounding the semiconductor nanocrystal core, and a shell surrounding the buffer layer.

Core-shell nanocrystal comprising a non-semiconductor buffer layer, method for preparing the same and electronic device comprising the same

Disclosed herein are a composite light-emitting material, which includes two or more light-emitting materials selected from an inorganic phosphor, a semiconductor nanocrystal and an organic dye in which the surfaces of the two or more light-emitting materials are coated; and a light-emitting device comprising the same, so as to improve the luminous efficiency and lifetime.

Composite light-emitting material and light-emitting device comprising the same

Nanocrystal-metal oxide-polymer composites and their methods of preparation are described. The composites comprises a number of nanocrystals within a metal oxide matrix, and an oligomer or polymer covalently bonded to organic reactive groups of the metal oxide matrix. The composites can be applied to a variety of electronic devices. The electronic devices constructed from the composites do not decrease in performance rapidly due to degradation and exhibit improved stability.

Nanocrystal-metal oxide-polymer composites and preparation method thereof

Disclosed herein is a light emitting device with improved life characteristics. The light emitting device comprises a circuit board having a recess, a reflection plane and an excitation source disposed in the recess, an overmolding overlying the reflection plane and the excitation source, a surface-inducing film formed on the overmolding, and a light conversion layer overlying the surface-inducing film. Also disclosed herein is a method for fabricating the light emitting device.

Growing community of inventors

Yongin-si, South Korea

Jung Eun Lim