Abstract:
A method for forming a thin film structure and a method for forming a gate electrode using the same are provided to reduce a process failure of a patterning process by preventing the particle from remaining on the surface of the thin film structure due to an organic material. A first thin film(102) is formed on a substrate(100). A part of the first thin film is doped with the impurity. A thermal process using the oxygen gas is performed in the first thin film doped with the impurity. The organic material remaining the first thin film is removed. An oxide film(106) is formed on the first thin film. A second thin film on the oxide film is made of the nitride.
Abstract:
A method of fabricating an image device having a capacitor and an image device fabricated thereby are provided to suppress the generation of noise of the image device. A manufacturing method of the imaging device comprises the following steps: the step for preparing the substrate having the pixel region (A) and peripheral circuit region (B,C); the step for forming the bottom electrode(115b) containing the silicon atom on the top of the substrate of the peripheral circuit region; the step for forming the capacitor dielectric film(121) including the first dielectric layer(120a) and the second dielectric layer(120b); the step for forming the upper electrode on the capacitor dielectric film. One of the first and second dielectric layers is the dielectric layer grown from the material layer formed in the lower part and has the dielectric constant greater than that of the other one.
Abstract:
A method for forming a contact hole is provided to suppress generation of a seam or void in a material layer filled in a contact hole by forming a buffer layer on the inner surface of a preliminary contact hole formed in an interlayer dielectric made of a nitride material and an oxide material. An interlayer dielectric in which a first material and a second material different from the first material are stacked is formed on a substrate(100). The interlayer dielectric is partially etched to form an interlayer dielectric pattern(112) having a preliminary contact hole exposing the surface of the substrate. A protection spacer(118) is formed on the lateral surface of the interlayer dielectric pattern so that the lateral surface of the interlayer dielectric pattern exposed by the preliminary contact hole is not etched by a subsequent cleaning process. A native oxide layer formed on the surface of the exposed substrate is cleaned to form a contact hole having a smaller width than that of the preliminary contact hole. The first material is an oxide material, and the second material is a nitride material. The protection spacer is made of a nitride material.
Abstract:
다양한 식각 용액에 대하여 매우 우수한 내성을 갖는 식각 저지 구조물 및 이를 포함하는 반도체 장치가 개시된다. 하부 구조물을 포함하는 기판 상에 하프늄 산화물 또는 알루미늄 산화물을 포함하는 금속 산화물층을 형성한 후, 금속 산화물층을 약 200∼900℃의 온도에서 열처리하여 식각 저지 구조물을 형성한다. 적어도 산화막 및 질화막을 식각하는 식각 용액에 대하여 극히 우수한 내성을 갖는 금속 산화물층을 포함하는 식각 저지 구조물을 적용하여, 반도체 장치의 여러 가지 구조를 형성하기 위한 다양한 식각 공정 동안 식각 저지 구조물 아래에 위치하는 하부 구조물을 식각 손상 없이 안정적으로 보호할 수 있다.
Abstract:
A semiconductor capacitor and its manufacturing method are provided to decrease equivalent oxide thickness and to improve leakage current characteristics by forming a SIM(Semiconductor-Insulator-Metal) structure. A lower electrode(12) is formed on a semiconductor substrate(10). A dielectric(14) is formed on the lower electrode. An upper electrode(16) is formed on the dielectric and has a multi layered structure of a poly crystalline four group semiconductor material. The four group semiconductor material includes silicon, germanium, and mixture thereof. The multi layered structure of the four group semiconductor material includes lower silicon and upper silicon-germanium mixture, lower germanium and upper silicon-germanium mixture, lower silicon-germanium mixture and upper silicon, or lower silicon-germanium mixture and upper germanium.
Abstract:
본 발명은 비휘발성 메모리 장치의 구조 및 그 제조방법에 관한 것이다. 본 발명에서는 플래쉬 메모리 소자의 적층게이트를 형성함에 있어서, 상기 적층게이트 중 플로팅 게이트를 휀스(fence) 형태의 요철형 구조로 형성함을 특징으로 한다. 상기 플로팅 게이트의 표면적이 월등히 증가함에 따라 게이트층간 유전체막(ONO막)과의 접촉 면적 또한 증가하게 되어 플래쉬 메모리 소자의 데이터 프로그램 및 소거 특성이 향상된다. 그리고, 플로팅 게이트를 휀스 형태의 요철형 구조로 형성할 경우, 그 표면적은 월등히 증가시키면서도 플로팅 게이트로서 기능하는 도전막의 증착 두께를 보다 낮출 수 있으므로 STI 형성을 위한 절연막 필링시 갭필 마진을 확보할 수 있게 되며, 플로팅 게이트 형성을 위한 도전막 증착시에도 심(seam) 형태의 디펙이 발생되는 문제점을 최소화할 수 있게 된다. 또한, 플로팅 게이트로서 기능하는 도전막의 증착 두께를 낮춤으로써 플래쉬 메모리 소자의 셀 어레이 영역과 주변회로 영역간의 단차를 낮추어 후속의 공정 진행이 원활해지도록 하여 결과적으로 생산성 또한 향상시킬 수 있게 된다.
Abstract:
A method of forming a dielectric layer having a reduced thickness according to embodiments of the invention includes forming a lower oxide layer on a substrate, and forming a nitride layer on the lower oxide layer. Then, a preliminary oxide layer is formed on the nitride layer. A radical oxidation process using oxygen radicals is performed on the preliminary oxide layer to form an upper oxide layer on the nitride layer. The dielectric layer includes an ONO composite layer consisting of the lower oxide layer, the nitride layer, and the upper oxide layer. Due to the decreased thickness of the dielectric layer, the dielectric layer has an improved capacitance and an increased coupling coefficient.
Abstract:
본 발명은 반도체소자에 사용되는 실리콘 리치 질화막을 형성하는 방법에 관한 것으로, 수직형 저압화학기상증착 장비를 사용하여 사일레인 가스 및 암모니아 가스의 유량비를 1.5:1 내지 2.5:1로 조절함으로써 스트레스가 감소된 실리콘 리치 질화막을 형성할 수 있다. 이에 따라, 본 발명에 따른 실리콘 리치 질화막을 반도체소자의 제조공정, 특히 소자분리 공정의 패드질화막으로 사용하는 경우 반도체기판에 가해지는 스트레스를 완화시킬 수 있다.
Abstract:
PURPOSE: A method for fabricating an insulation layer of a semiconductor device with a multilayered nanolaminate structure and a fabricating method therefor are provided to improve a wet etch characteristic and obtain a low dielectric constant by forming an insulation layer used as a dielectric layer of the semiconductor device such that the insulation layer is made of the multilayered nanolaminate structure in which a SiNx layer and a BN layer are alternatively stacked. CONSTITUTION: A silicon nitride layer(210) is formed on a wafer(100). A boron nitride layer(220) is formed on the silicon nitride layer. The abovementioned processes are alternatively repeated to form a multilayered nanolaminate thin film(200). An atomic layer deposition process is repeatedly performed a predetermined number of times to form the silicon nitride layer and the boron nitride layer.
Abstract:
PURPOSE: A method for forming a thin film is provided to be capable of improving step coverage and uniformity of the thin film by forming an SiBN film using an ALD(Atomic Layer Deposition). CONSTITUTION: The first reactant and the second reactant are adsorbed on a wafer by supplying the first and second reactants into an ALD chamber. The residual first and second reactants are purged by applying the third reactant into the chamber. The fourth reactant is supplied into the chamber. The residual fourth reactant is purged by applying the fifth reactant into the chamber. These processes are repeatedly performed to form a ternary film, such as a SiBN film. The first reactant is BCl3, BBr3, B3H6 or BF3. The second reactant is SiH2Cl2, SiCl4, Si2Cl6, or SiH4.