摘要:
A resistive memory device includes a switching device disposed on a lower interconnection, a resistor element disposed on the switching device, and an upper interconnection disposed on the resistor element. The switching device includes a diode electrode, a high-concentration lower anode disposed on the diode electrode, a middle-concentration lower anode disposed on the lower high-concentration anode electrode, a common cathode disposed on the middle-concentration lower anode, a low-concentration upper anode disposed on the common cathode, and an high-concentration upper anode disposed on the low-concentration upper anode. The peak dopant concentration of the middle-concentration lower anode is at least 10 times greater than the peak dopant concentration of the low-concentration upper anode.
摘要:
A nonvolatile memory device, a method of fabricating the nonvolatile memory device and a processing system including the nonvolatile memory device. The nonvolatile memory device may include a plurality of internal electrodes that extend in a direction substantially perpendicular to a face of a substrate, a plurality of first external electrodes that extend substantially in parallel with the face of the substrate, and a plurality of second external electrodes that also extend substantially in parallel with the face of the substrate. Each first external electrode is on a first side of a respective one of the internal electrodes, and each second external electrode is on a second side of a respective one of the internal electrodes. These devices also include a plurality of variable resistors that contact the internal electrodes, the first external electrodes and the second external electrodes.
摘要:
A nonvolatile memory device, a method of fabricating the nonvolatile memory device and a processing system including the nonvolatile memory device. The nonvolatile memory device may include a plurality of internal electrodes that extend in a direction substantially perpendicular to a face of a substrate, a plurality of first external electrodes that extend substantially in parallel with the face of the substrate, and a plurality of second external electrodes that also extend substantially in parallel with the face of the substrate. Each first external electrode is on a first side of a respective one of the internal electrodes, and each second external electrode is on a second side of a respective one of the internal electrodes. These devices also include a plurality of variable resistors that contact the internal electrodes, the first external electrodes and the second external electrodes.
摘要:
A semiconductor memory device includes pillars extending upright on a substrate in a direction perpendicular to the substrate, a stack disposed on the substrate and constituted by a first interlayer insulating layer, a first conductive layer, a second interlayer insulating layer, and a second conductive layer, a variable resistance layer interposed between the pillars and the first conductive layer, and an insulating layer interposed between the first pillars and the second conductive layer.
摘要:
A nonvolatile memory device includes a bottom electrode on a semiconductor substrate, a data storage layer on the bottom electrode, the data storage layer including a transition metal oxide, and a switching layer provided on a top surface and/or a bottom surface of the data storage layer, wherein a bond energy of material included in the switching layer and oxygen is more than a bond energy of a transition metal in the transition metal oxide and oxygen.
摘要:
A method of fabricating a memory device includes defining a cell region on a substrate and defining a dummy region around the cell region, forming bit lines on a top surface of the substrate, the bit lines extending in one direction, forming cell vertical structures on top surfaces of the bit lines corresponding to the cell region, each cell vertical structure including a cell diode and a variable resistive element, forming dummy vertical structures on top surfaces of the bit lines corresponding to the dummy region, each dummy vertical structure including a dummy diode and a variable resistive element, and forming word lines in contact with top surfaces of the cell vertical structures and dummy vertical structures, the word lines intersecting the bit lines at right angles. The cell diode includes a first impurity pattern and a second impurity pattern, the dummy diode includes a first lightly doped impurity pattern and a second impurity pattern, and the variable resistive element includes a first electrode, a variable resistor, and a second electrode.
摘要:
Provided is a method of fabricating a memory device. The method includes defining a cell region and a driving region on a substrate, forming driving transistors on the driving region, forming a first bit line in the cell region, a first unit memory cell disposed on an upper surface of the first bit line, a word line disposed on upper surfaces of the first unit memory cells, and a second unit memory cell disposed on an upper surface of the word line, forming a planarization layer configured to fill between the second unit memory cells, and including second bit line grooves on the upper surfaces of the first bit lines, bit line contact vias in the second bit line grooves, floating electrode grooves on upper surfaces of ends of the word lines, and a first floating contact via and a second floating contact via in each of the floating electrode grooves, simultaneously forming second bit lines in the second bit line grooves, bit line contact electrodes in the bit line contact vias, floating electrodes in the floating electrode grooves, first floating contact electrodes in the first floating contact vias, and second floating contact electrodes in the second floating contact vias.
摘要:
Provided is a method of fabricating a memory device. The method includes defining a cell region and a driving region on a substrate, forming driving transistors on the driving region, forming a first bit line in the cell region, a first unit memory cell disposed on an upper surface of the first bit line, a word line disposed on upper surfaces of the first unit memory cells, and a second unit memory cell disposed on an upper surface of the word line, forming a planarization layer configured to fill between the second unit memory cells, and including second bit line grooves on the upper surfaces of the first bit lines, bit line contact vias in the second bit line grooves, floating electrode grooves on upper surfaces of ends of the word lines, and a first floating contact via and a second floating contact via in each of the floating electrode grooves, simultaneously forming second bit lines in the second bit line grooves, bit line contact electrodes in the bit line contact vias, floating electrodes in the floating electrode grooves, first floating contact electrodes in the first floating contact vias, and second floating contact electrodes in the second floating contact vias.
摘要:
A nonvolatile memory device includes a bottom electrode on a semiconductor substrate, a data storage layer on the bottom electrode, the data storage layer including a transition metal oxide, and a switching layer provided on a top surface and/or a bottom surface of the data storage layer, wherein a bond energy of material included in the switching layer and oxygen is more than a bond energy of a transition metal in the transition metal oxide and oxygen.
摘要:
A method of fabricating a memory device includes defining a cell region on a substrate and defining a dummy region around the cell region, forming bit lines on a top surface of the substrate, the bit lines extending in one direction, forming cell vertical structures on top surfaces of the bit lines corresponding to the cell region, each cell vertical structure including a cell diode and a variable resistive element, forming dummy vertical structures on top surfaces of the bit lines corresponding to the dummy region, each dummy vertical structure including a dummy diode and a variable resistive element, and forming word lines in contact with top surfaces of the cell vertical structures and dummy vertical structures, the word lines intersecting the bit lines at right angles. The cell diode includes a first impurity pattern and a second impurity pattern, the dummy diode includes a first lightly doped impurity pattern and a second impurity pattern, and the variable resistive element includes a first electrode, a variable resistor, and a second electrode.