Abstract:
PURPOSE: A method for improving electrical and optical properties of zinc oxide layer by using hydrogen peroxide is provided to improve quantum efficiency of solar battery by using an oxidation zinc thin film as a transparent conductive film of a solar battery. CONSTITUTION: A method for improving electrical and optical properties of zinc oxide layer by using hydrogen peroxide is as follows. An oxidation zinc thin film is dipped in the mixture of ultra-pure water and hydrogen peroxide and maintained. The oxidation zinc thin film is deposited on the top of a substrate and dipped in the mixture of ultra-pure water and hydrogen peroxide. Resistivity, transmittance and optical bandgap energy are improved. The oxidation zinc thin film is deposited on the top of the substrate as thickness of 900~1100nm. The oxidation zinc thin film is an aluminum doped oxidation zinc thin film. The oxidation zinc thin film, dipped in the mixture of the ultra-pure water and hydrogen peroxide, maintains in solution for 20~40 minutes.
Abstract:
PURPOSE: A nano crystal silicon layer structure using plasma deposition technology, a nonvolatile memory device including the same, and forming methods thereof are provided to reduce manufacturing processes of the nonvolatile memory device by directly depositing the nano crystal silicon layer on the glass substrate. CONSTITUTION: A gate electrode(55) is formed on a substrate(51). A multilayer insulation layer(63) is formed on a gate electrode. A first nano crystal silicon layer(65) is formed on the multilayer insulation layer using plasma deposition technology using gas containing hydrogen and silicon on the multilayer insulation layer. A metal electrode layer is formed on the first nano crystal silicon layer. A source electrode(69) and a drain electrode(71) are formed by patterning a metal electrode layer.
Abstract:
PURPOSE: A charge storage device and a method for manufacturing the same are provided to reduce the manufacturing cost of a memory device by forming a charge storage layer and a blocking insulation layer using an identical mixing gas. CONSTITUTION: A tunneling insulation layer(13) is formed on a substrate(11). A charge storage layer(15) is formed on the tunneling insulation layer and includes a first band gap energy. A blocking insulation layer(17) including a second band gap energy is formed on the charge storage layer. A control gate(19) is formed on the blocking insulation layer. The composition ratio of a mixing gas for the charge storage layer is different from the composition ratio for the blocking insulation layer.
Abstract:
제한된 네트워크 트래픽을 사용한 디스커버리 알고리즘 및 동적인 네트워크 환경에 적응하는 애드-혹 상에서 서비스 디스커버리 시스템 및 그 방법에 관한 것으로, 유비쿼터스 서비스 제공하는 애플리케이션 계층, 캐시 관리자(Cache Manager) 및 정책 관리자(Policy Manager)를 구비한 서비스 관리 계층 및 시스템간의 통신 및 서비스 전달을 실행하는 네트워크 통신 계층을 포함하며, 상기 캐시 관리자는 주변 노드들이 제공하는 서비스 정보를 저장하고 관리하기 위한 모듈이고, 정책 관리자는 유저의 선호도, 디바이스의 컴퓨팅 능력, 네트워크의 상태에 따라 서비스 광고에 대한 주기 결정, 서비스 캐시 갱신 정책, 네트워크를 통해 들어온 패킷에 대한 처리를 실행하는 모듈인 구성을 마련한다. 상기와 같은 애드-혹 상에서 우선순위 기반 적응적 디스커버리 시스템 및 그 방법을 이용하는 것에 의해, 애드-혹 네트워크의 높은 패킷 손실에 대항하여 빠르고 신뢰성 있는 서비스를 제공할 수 있다. 애드-혹, 네트워크, 서비스, 디스커버리, QoS, 캐시 관리
Abstract:
An adaptive discovery system based on a priority on an ad-hoc network and an adaptive discovery method are provided to dynamically regulate a caching strategy, a service period, and a network packet processing process by applying the priority on a network service based on popularity of the network service. An LSD(Lightweight Service Discovery) engine includes an application layer(100), a service management layer(200), and a network communication layer(300). The application layer provides an application for providing a ubiquitous service. At the service management layer, the LSD includes two main modules having a cache manager and a policy manager. The network communication layer includes a UDP(User Datagram Protocol)-based multicast module, a TCP(Transfer Control Protocol)-based unicast module, an HTTP(Hypertext Transfer Protocol) module, and an SOAP(Simple Object Access Protocol) module. A service discovery process is performed by using an XML(eXtensible Markup Language) structure.