摘要:
A mold stack including alternating insulation layers and sacrificial layers is formed on a substrate. Vertical channel regions extending through the insulation layers and sacrificial layers of the mold stack are formed. Gate electrodes are formed between adjacent ones of the insulation layers and surrounding the vertical channel regions. The gate electrodes have a greater thickness at a first location near sidewalls of the insulation layers than at a second location further away from the sidewalls of the insulation layers.
摘要:
Example embodiments of the present invention relate to methods of treating and removing a photoresist pattern and a method of manufacturing a semiconductor device using the same. Other example embodiments of the present invention relate to a method of treating a photoresist pattern and a method of removing a photoresist pattern formed using a photoresist composition suitable for argon fluoride (ArF). In a method of removing a photoresist pattern, an ozone vapor including a water vapor and an ozone gas may be provided onto the photoresist pattern to remove a hydrophobic group from a photoresist resin included in the photoresist pattern. A cleaning solution may be provided to make the photoresist pattern water-soluble. A cleaning process may be performed on the photoresist pattern to remove the photoresist pattern. The photoresist pattern may be effectively removed without an increased processing time and/or damage to a substrate.
摘要:
Disclosed are a method of wet etching and a method of fabricating a semiconductor device. The wet etching method includes providing a wafer in a process bath and an etchant is accommodated, supplying the process bath with a primary etchant to control a concentration of a specific material in the etchant, supplying the process bath with a first additive to increase the concentration of the specific material in the etchant, and supplying the process bath with a second additive to suppress a defect caused by an increase in the concentration of the specific material in the etchant. The etchant includes at least one, of the primary etchant, the first additive, and the second additive. The first additive and the second additive are separately supplied to the process bath.
摘要:
Three dimensional semiconductor memory devices and methods of fabricating the same are provided. According to the method, sacrificial layers and insulating layers are alternately and repeatedly stacked on a substrate, and a cutting region penetrating an uppermost sacrificial layer of the sacrificial layers is formed. The cutting region is filled with a non sacrificial layer. The insulating layers and the sacrificial layers are patterned to form a mold pattern. The mold pattern includes insulating patterns, sacrificial patterns, and the non sacrificial layer in the cutting region. The sacrificial patterns may be replaced with electrodes. The related semiconductor memory device is also provided.
摘要:
According to an example embodiment, a non-volatile memory device includes a semiconductor layer pattern on a substrate, a plurality of gate patterns and a plurality of interlayer insulating layer patterns that are alternately stacked along a side wall of the semiconductor layer pattern, and a storage structure between the plurality of gate patterns and the semiconductor layer pattern. The semiconductor layer pattern extends in a vertical direction from the substrate. The gate patterns are recessed in a direction from a side wall of the interlayer insulating layer patterns opposing the side wall of the semiconductor layer pattern. A recessed surface of the gate patterns may be formed to be vertical to a surface of the substrate.
摘要:
A mold stack including alternating insulation layers and sacrificial layers is formed on a substrate. Vertical channel regions extending through the insulation layers and sacrificial layers of the mold stack are formed. Gate electrodes are formed between adjacent ones of the insulation layers and surrounding the vertical channel regions. The gate electrodes have a greater thickness at a first location near sidewalls of the insulation layers than at a second location further away from the sidewalls of the insulation layers.
摘要:
According to an example embodiment, a non-volatile memory device includes a semiconductor layer pattern on a substrate, a plurality of gate patterns and a plurality of interlayer insulating layer patterns that are alternately stacked along a side wall of the semiconductor layer pattern, and a storage structure between the plurality of gate patterns and the semiconductor layer pattern. The semiconductor layer pattern extends in a vertical direction from the substrate. The gate patterns are recessed in a direction from a side wall of the interlayer insulating layer patterns opposing the side wall of the semiconductor layer pattern. A recessed surface of the gate patterns may be formed to be vertical to a surface of the substrate.
摘要:
In a method of removing a photoresist pattern from a substrate without deteriorating a lower electrode or increasing processing time, ozone gas may be provided onto a substrate on which a photoresist pattern may be formed. An oxidation-decomposition process may be carried out using the ozone gas, to thereby decompose the photoresist pattern on the substrate. The decomposed photoresist pattern may be dissolved into water and removed from the substrate in a rinsing process. Accordingly, a photoresist pattern in an opening having a relatively high aspect ratio may be sufficiently removed from a substrate without deteriorating the lower electrode or increasing processing time.
摘要:
Three dimensional semiconductor memory devices and methods of fabricating the same are provided. According to the method, sacrificial layers and insulating layers are alternately and repeatedly stacked on a substrate, and a cutting region penetrating an uppermost sacrificial layer of the sacrificial layers is formed. The cutting region is filled with a non sacrificial layer. The insulating layers and the sacrificial layers are patterned to form a mold pattern. The mold pattern includes insulating patterns, sacrificial patterns, and the non sacrificial layer in the cutting region. The sacrificial patterns may be replaced with electrodes. The related semiconductor memory device is also provided.
摘要:
Etching compositions are provided. The etching composition includes a phosphoric acid, ammonium ions and a silicon compound. The silicon compound includes a silicon atom, an atomic group having an amino group combined with the silicon atom, and at least two oxygen atoms combined with the silicon atom. Methods utilizing the etching compositions are also provided.