摘要:
A Cu interconnect member is passivated by diffusing Sn, Ta or Cr atoms into its upper surface to form an intermetallic layer. Embodiments include depositing Cu by electroplating or electroless plating to fill a damascene opening in a dielectric layer, CMP, depositing a sacrificial layer of Sn, Ta or Cr on the planarized surface, heating to diffuse Sn, Ta or Cr into the upper surface of the deposited Cu to form a passivating intermetallic alloy layer, and removing any remaining sacrificial layer by CMP or etching.
摘要:
A method for manufacturing an integrated circuit using damascene processes is provided in which conductive material surfaces subject to chemical-mechanical polishing are passivated after polishing with a dry, low energy, ion implantation passivating process to prevent oxidation and to eliminate a high dielectric constant protective layer. In particular, copper conductive material is subject to nitrogen implantation at or below 100 KeV to produce a protective copper nitride.
摘要:
A method for forming a single damascene and/or dual damascene, contact and interconnect structure, comprising: performing front end processing, depositing copper including a copper barrier, annealing the copper in at least 90% N2 with less than 10% H2, performing planarization, performing in-situ low-H NH3 plasma treatment and low Si—H SiN etch stop layer deposition, and performing remaining back end processing.
摘要:
Data retention in flash memory devices, such as mirrorbit devices, is improved by reducing the generation and/or diffusion of hydrogen ions during back end processing, such as annealing inlaid Cu. Embodiments include annealing inlaid Cu in an N2 atmosphere containing low H2 or no H2, and at temperatures less than 200° C., e.g., 100° C. to 150° C.
摘要翻译:通过减少后端处理中的氢离子的产生和/或扩散(例如退火的Cu)来改善闪存器件(例如镜像位装置)中的数据保留。 实施方案包括在含有低H 2 N 2或无H 2 N的N 2 O 2气氛中以及在低于200℃的温度下退火嵌入的Cu, 例如,100℃至150℃
摘要:
Gap filling between features which are closely spaced is significantly improved by initially depositing a thin conformal layer followed by depositing a layer of gap filling dielectric material. Embodiments include depositing a thin conformal layer of silicon nitride or silicon oxide, as by atomic layer deposition or pulsed layer deposition, into the gap between adjacent gate electrode structures such that it flows into undercut regions of dielectric spacers on side surfaces of the gate electrode structures, and then depositing a layer of BPSG or P-HDP oxide on the thin conformal layer into the gap. Embodiments further include depositing the layers at a temperature less than 430° C., as by depositing a P-HDP oxide after depositing the conformal liner when the gate electrode structures include a layer of nickel silicide.
摘要:
A memory device having a metal nanocrystal charge storage structure and a method for its manufacture. The memory device may be manufactured by forming a first oxide layer on the semiconductor substrate, then disposing a porous dielectric layer on the oxide layer and disposing a second oxide layer on the porous dielectric layer. A layer of electrically conductive material is formed on the second layer of dielectric material. An etch mask is formed on the electrically conductive material. The electrically conductive material and the underlying dielectric layers are anisotropically etched to form a dielectric structure on which a gate electrode is disposed. A metal layer is formed on the dielectric structure and the gate electrode and treated so that portions of the metal layer diffuse into the porous dielectric layer. Then the metal layer is removed.
摘要:
An exemplary embodiment is related to a method of using an adhesion precursor in an integrated circuit fabrication process. The method includes providing a gas of material over a dielectric material and providing a copper layer over an adhesion precursor layer. The adhesion precursor layer is formed by the gas, and the dielectric material includes an aperture.
摘要:
In forming an opening or space in a substrate, a layer of photoresist is provided on the substrate, and the photoresist is patterned to provide photoresist bodies having respective adjacent sidewalls. A polymer layer is provided on the resulting structure through a low temperature conformal CVD process. The polymer layer is anisotropically etched to form spacers on the respective adjacent sidewalls of the photoresist bodies. The substrate is then etched using the spacers as a mask.
摘要:
A method and system for insulating a lower layer of a semiconductor device from an upper layer of the semiconductor device is disclosed. The method and system include providing an interlayer dielectric on the lower layer. The interlayer dielectric is capable of gap filling while using only species of relatively low mobility. The method and system also include planarizing a surface of the interlayer dielectric.
摘要:
A method of forming a metal or metal nitride layer interface between a copper layer and a silicon nitride layer can include providing a metal organic gas or metal/metal nitride precursor over a copper layer, forming a metal or metal nitride layer from reactions between the metal organic gas or metal/metal nitride precursor and the copper layer, and depositing a silicon nitride layer over the metal or metal nitride layer and copper layer. The metal or metal nitride layer can provide a better interface adhesion between the silicon nitride layer and the copper layer. The metal layer can improve the interface between the copper layer and the silicon nitride layer, improving electromigration reliability and, thus, integrated circuit device performance.