Kookmin University

Jaegab Lee

Jang-Sik Lee

Jinhan Cho

Chi Young Lee

Daekyun Jeong

Byeong Hyeok Sohn

The present invention herein relates to a method of forming a through-hole in a silicon substrate. The present invention herein also relates to a method of forming an electrical connection element which penetrates through the silicon substrate, and to a semiconductor device manufactured thereby. More particularly, the present invention herein relates to a method of forming in a silicon substrate a through-hole capable of reducing roughness in a side wall of the through-hole and exhibiting low permittivity, by alternatingly laminating cationic and anionic polymer on the through-hole that has a dent on the side wall to form a porous elastic layer, and also relates to a method of forming an electrical connection that penetrates through the silicon substrate, and to a semiconductor device manufactured thereby.

Method of forming through-hole in silicon substrate, method of forming electrical connection element penetrating silicon substrate and semiconductor device manufactured thereby

Provided is a floating gate having multiple charge storage layers, a non-volatile memory device using the same, and a method of fabricating the floating gate and the non-volatile memory device, in which the multiple charge storage layers using metallic/semiconducting nano-particles is formed to thereby enhance a charge storage capacity of the memory device. The floating gate includes a polymer electrolytic film which is deposited on a tunneling oxide film, and is formed of at least one stage in which at least one thin film is deposited on each stage, and at least one metal nano-particle layer which is self-assembled on the upper surface of each stage of the polymer electrolytic film and on which a number of nano-particles for trapping charges are formed. The floating gate is made by self-assembling the nano-particles on the polymer electrolytic film, and thus can be fabricated without undergoing a heat treatment process at high temperature.

Floating gate having multiple charge storing layers, method of fabricating the floating gate, non-volatile memory device using the same, and fabricating method thereof

Provided is a method of forming a floating gate, a non-volatile memory device using the same, and a method of fabricating the non-volatile memory device, in which nano-crystals of nano-size whose density and size can be easily adjusted, are synthesized using micelles so as to be used as the floating gate of the non-volatile memory device. The floating gate is fabricated by forming a tunnel oxide film on the semiconductor substrate, coating a gate formation solution on the tunnel oxide film in which the gate formation solution includes micelle templates into which precursors capable of synthesizing metallic salts in nano-structures formed by a self-assembly method are introduced, and arranging the metallic salts on the tunnel oxide film by removing the micelle templates, to thereby form the floating gate.

Method of forming floating gate, non-volatile memory device using the same, and fabricating method thereof

Provided is a floating gate having multiple charge storing layers, a non-volatile memory device using the same, and a method of fabricating the floating gate and the non-volatile memory device, in which the multiple charge storing layers using metal nano-crystals of nano size is formed to thereby enhance a charge storage capacity of the memory device. The floating gate includes a polymer electrolytic film which is deposited on a tunneling oxide film, and is formed of at least one stage in which at least one thin film is deposited on each stage, and at least one metal nano-crystal film which is self-assembled on the upper surface of each stage of the polymer electrolytic film and on which a number of metal nano-crystals for trapping charges are deposited. The floating gate is made by self-assembling the metal nano-crystals on the polymer electrolytic film, and thus can be fabricated without undergoing a heat treatment process at high temperature.

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Seoul, South Korea

Jaegab Lee