摘要:
A NAND memory array has a plurality of rows of memory cells and a plurality of columns of NAND strings of memory cells. Each NAND string is selectively connected to a bit line through a drain select gate of the respective column. Each of the drain select gates has a first dielectric layer formed on a semiconductor substrate of the memory array and a control gate formed on the first dielectric layer. Each of the memory cells of each of the NAND strings has a second dielectric layer formed on the substrate adjacent the first dielectric layer, a floating gate formed on the second dielectric layer, a third dielectric layer formed on the floating gate, and a control gate formed on the third dielectric layer. The first dielectric layer is thicker than the second dielectric layer.
摘要:
A NAND memory array has a first dielectric layer formed on a first portion of a semiconductor substrate and a second dielectric layer formed on a second portion of the semiconductor substrate and adjoining the first dielectric layer. The first dielectric layer is thicker than the second dielectric layer. A first gate stack is formed on the first dielectric layer to form a drain select gate. A string of second gate stacks is formed on the second dielectric layer to form a NAND string of floating-gate memory cells. A first end of the NAND string is coupled in series with the drain select gate. A third gate stack is formed on the second dielectric layer to form a source select gate. A second end of the NAND string is coupled in series with the source select gate.
摘要:
NAND memory arrays and methods are provided. A plurality of first gate stacks is formed on a first dielectric layer that is formed on a substrate of a NAND memory array. The first dielectric layer and the plurality of first gate stacks formed thereon form a NAND string of memory cells of the memory array. A second gate stack is formed on a second dielectric layer that is formed on the substrate adjacent the first dielectric layer. The second dielectric layer with the second gate stack formed thereon forms a drain select gate adjacent an end of the NAND string. The second dielectric layer is thicker than the first dielectric layer.
摘要:
NAND memory arrays and methods are provided. A plurality of first gate stacks is formed on a first dielectric layer that is formed on a substrate of a NAND memory array. The first dielectric layer and the plurality of first gate stacks formed thereon form a NAND string of memory cells of the memory array. A second gate stack is formed on a second dielectric layer that is formed on the substrate adjacent the first dielectric layer. The second dielectric layer with the second gate stack formed thereon forms a drain select gate adjacent an end of the NAND string. The second dielectric layer is thicker than the first dielectric layer.
摘要:
Layers of epitaxial silicon are used to protect the tunnel dielectric layer of a floating-gate memory cell from excessive oxidation or removal during the formation of shallow trench isolation (STI) regions. Following trench formation, the layers of epitaxial silicon are grown from silicon-containing layers on opposing sides of the tunnel dielectric layer, thereby permitting their thickness to be limited to approximately one-half of the thickness of the tunnel dielectric layer. The epitaxial silicon may be oxidized prior to filling the trench with a dielectric material or a dielectric fill may occur prior to oxidizing at least the epitaxial silicon covering the ends of the tunnel dielectric layer.
摘要:
A method of forming (and an apparatus for forming) a metal containing layer on a substrate, particularly a semiconductor substrate or substrate assembly for use in manufacturing a semiconductor or memory device structure, using one or more precursor compounds that include niobium and/or vanadium and using an atomic layer deposition process including a plurality of deposition cycles.
摘要:
In one aspect, the invention encompasses a method of fabricating an interconnect for a semiconductor component. A semiconductor substrate is provided, and an opening is formed which extends entirely through the substrate. A first material is deposited along sidewalls of the opening at a temperature of less than or equal to about 200° C. The deposition can comprise one or both of atomic layer deposition and chemical vapor deposition, and the first material can comprise a metal nitride. A solder-wetting material is formed over a surface of the first material. The solder-wetting material can comprise, for example, nickel. Subsequently, solder is provided within the opening and over the solder-wetting material.
摘要:
An MIS capacitor with low leakage and high capacitance is disclosed. A layer of hemispherical grained polysilicon (HSG) is formed as a lower electrode. Prior to the dielectric formation, the hemispherical grained polysilicon layer may be optionally subjected to a nitridization or anneal process. A dielectric layer of aluminum oxide (Al2O3), or a composite stack of interleaved layers of aluminum oxide and other metal oxide dielectric materials, is fabricated over the hemispherical grained polysilicon layer and after the optional nitridization or anneal process. The dielectric layer of aluminum oxide (Al2O3) or the aluminum oxide composite stack may be optionally subjected to a post-deposition treatment to further increase the capacitance and decrease the leakage current. A metal nitride upper electrode is formed over the dielectric layer or the composite stack by a deposition technique or by atomic layer deposition.
摘要翻译:公开了具有低泄漏和高电容的MIS电容器。 形成半球状晶粒多晶硅层(HSG)作为下电极。 在电介质形成之前,半球状晶粒多晶硅层可以任选地进行氮化或退火工艺。 在半球形颗粒上制造氧化铝(Al 2 O 3 3)的介电层或氧化铝和其它金属氧化物电介质材料的交错层的复合叠层 多晶硅层和可选的氮化或退火工艺后。 氧化铝(Al 2 O 3 3)的电介质层或氧化铝复合叠层可以任选地进行后沉积处理以进一步增加电容并减小 漏电流。 通过沉积技术或通过原子层沉积在电介质层或复合叠层上形成金属氮化物上电极。
摘要:
The invention includes atomic layer deposition methods of depositing an oxide on a substrate. In one implementation, a substrate is positioned within a deposition chamber. A first species is chemisorbed onto the substrate to form a first species monolayer within the deposition chamber from a gaseous precursor. The chemisorbed first species is contacted with remote plasma oxygen derived at least in part from at least one of O2 and O3 and with remote plasma nitrogen effective to react with the first species to form a monolayer comprising an oxide of a component of the first species monolayer. The chemisorbing and the contacting with remote plasma oxygen and with remote plasma nitrogen are successively repeated effective to form porous oxide on the substrate. Other aspects and implementations are contemplated.
摘要:
This invention includes methods of depositing a silicon dioxide comprising layer in the fabrication of integrated circuitry, and to methods of forming trench isolation in the fabrication of integrated circuitry. In one implementation, a method of depositing a silicon dioxide comprising layer in the fabrication of integrated circuitry includes flowing an aluminum containing organic precursor to a chamber containing a semiconductor substrate effective to deposit an aluminum comprising layer over the substrate. An alkoxysilanol is flowed to the substrate comprising the aluminum comprising layer within the chamber effective to deposit a silicon dioxide comprising layer over the substrate. At least one halogen is provided within the chamber during at least one of the aluminum containing organic precursor flowing and the alkoxysilanol flowing under conditions effective to reduce rate of the deposit of the silicon dioxide comprising layer over the substrate than would otherwise occur under identical conditions but for providing the halogen. Other implementations are contemplated.