摘要:
Non-volatile resistive-switching memories formed using anodization are described. A method for forming a resistive-switching memory element using anodization includes forming a metal containing layer, anodizing the metal containing layer at least partially to form a resistive switching metal oxide, and forming a first electrode over the resistive switching metal oxide. In some examples, an unanodized portion of the metal containing layer may be a second electrode of the memory element.
摘要:
Non-volatile resistive-switching memories formed using anodization are described. A method for forming a resistive-switching memory element using anodization includes forming a metal containing layer, anodizing the metal containing layer at least partially to form a resistive switching metal oxide, and forming a first electrode over the resistive switching metal oxide. In some examples, an unanodized portion of the metal containing layer may be a second electrode of the memory element.
摘要:
Non-volatile resistive-switching memories formed using anodization are described. A method for forming a resistive-switching memory element using anodization includes forming a metal containing layer, anodizing the metal containing layer at least partially to form a resistive switching metal oxide, and forming a first electrode over the resistive switching metal oxide. In some examples, an unanodized portion of the metal containing layer may be a second electrode of the memory element.
摘要:
Non-volatile resistive-switching memories formed using anodization are described. A method for forming a resistive-switching memory element using anodization includes forming a metal containing layer, anodizing the metal containing layer at least partially to form a resistive switching metal oxide, and forming a first electrode over the resistive switching metal oxide. In some examples, an unanodized portion of the metal containing layer may be a second electrode of the memory element.
摘要:
Resistive-switching memory elements having improved switching characteristics are described, including a memory element having a first electrode and a second electrode, a switching layer between the first electrode and the second electrode, the switching layer comprising a first metal oxide having a first bandgap greater than 4 electron volts (eV), the switching layer having a first thickness, and a coupling layer between the switching layer and the second electrode, the coupling layer comprising a second metal oxide having a second bandgap greater the first bandgap, the coupling layer having a second thickness that is less than 25 percent of the first thickness.
摘要:
This disclosure provides a method of fabricating a semiconductor device layer and associated memory cell structures. By performing a surface treatment process (such as ion bombardment) of a semiconductor device layer to create defects having a deliberate depth profile, one may create multistable memory cells having more consistent electrical parameters. For example, in a resistive-switching memory cell, one may obtain a tighter distribution of set and reset voltages and lower forming voltage, leading to improved device yield and reliability. In at least one embodiment, the depth profile is selected to modulate the type of defects and their influence on electrical properties of a bombarded metal oxide layer and to enhance uniform defect distribution.
摘要:
This disclosure provides a method of fabricating a semiconductor device layer and an associated memory cell. Empirical data may be used to generate a hysteresis curve associated with deposition for a metal-insulator-metal structure, with curve measurements reflecting variance of an electrical property as a function of cathode voltage used during a sputtering process. By generating at least one voltage level to be used during the sputtering process, where the voltage reflects a suitable value for the electrical property from among the values obtainable in mixed-mode deposition, a semiconductor device layer may be produced with improved characteristics and durability. A multistable memory cell or array of such cells manufactured according to this process can, for a set of given materials, be fabricated to have minimal leakage or “off” current characteristics (Ileak or Ioff, respectively) or a maximum ratio of “on” current to “off” current (Ion/Ioff).
摘要:
A resistive switching memory element including a doped silicon electrode is described, including a first electrode comprising doped silicon having a first work function, a second electrode having a second work function that is different from the first work function by between 0.1 and 1.0 electron volts (eV), a metal oxide layer between the first electrode and the second electrode, the metal oxide layer switches using bulk-mediated switching and has a bandgap of greater than 4 eV, and the memory element switches from a low resistance state to a high resistance state and vice versa.
摘要:
Non-volatile resistive-switching memories are described, including a memory element having a first electrode, a second electrode, a metal oxide between the first electrode and the second electrode. The metal oxide switches using bulk-mediated switching, has a bandgap greater than 4 electron volts (eV), has a set voltage for a set operation of at least one volt per one hundred angstroms of a thickness of the metal oxide, and has a leakage current density less than 40 amps per square centimeter (A/cm2) measured at 0.5 volts (V) per twenty angstroms of the thickness of the metal oxide.
摘要:
A resistance-change memory device using stress engineering is described, including a first layer including a first conductive electrode, a second layer above the first layer including a resistive-switching element, a third layer above the second layer including a second conductive electrode, where a first stress is created in the switching element at a first interface between the first layer and the second layer upon heating the memory element, and where a second stress is created in the switching element at a second interface between the second layer and the third layer upon the heating. A stress gradient equal to a difference between the first stress and the second stress has an absolute value greater than 50 MPa, and a reset voltage of the memory element has a polarity relative to a common electrical potential that has a sign opposite the stress gradient when applied to the first conductive electrode.