Uniqueness in Activation Energy and Charge-to-Breakdown of Highly Asymmetrical DRAM<tex>$hbox Al_2 hbox O_3$</tex>Cell Capacitors

Nanocoaxes for optical and electronic devices

“…The breakdown field of the coaxial capacitor was almost independent of the height of the capacitor, yet much lower than the value for trench capacitors. 112 Other similarly structured electrostatic capacitors, such as C-BN-C, 38 CNT-Al 2 O 3 -CNT, 110 and Pt-Al 2 O 3 /TiO x -Pt 113 , have been examined.…”

Dielectric capacitors with three-dimensional nanoscale interdigital electrodes for energy storage

“…Furthermore, the value of the critical electric field is lower than that for the Al 2 O 3 trench capacitors (12.19 MV/cm) (10), which might result from the slightly low-order degree of the nanopores in the HA-AAO. In our capacitor, the lowest leakage current at 15 V was about 2.28 × 10 −8 A/cm 2 , which is comparable to that of the previously reported value (10). However, the leakage current density would increase with the area of the current collector increasing (fig.…”

“…However, their energy storage capability lags behind because only limited surface charges are usable (3,4). Therefore, enhancing the energy density of dielectric capacitors as an alternative approach to the high-performance storage systems has attracted the interest of many scientists (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16). The current strategy is simply to increase the specific surface area of the electrodes of energy storage systems (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), where nanostructured materials with large specific surface areas have offered exciting opportunities for electrical energy storage devices with a high energy density.…”

“…Therefore, enhancing the energy density of dielectric capacitors as an alternative approach to the high-performance storage systems has attracted the interest of many scientists (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16). The current strategy is simply to increase the specific surface area of the electrodes of energy storage systems (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), where nanostructured materials with large specific surface areas have offered exciting opportunities for electrical energy storage devices with a high energy density. For instance, "trench" capacitors containing metal-insulator-metal (MIM) layer stacks have been fabricated inside nanoporous/microporous materials for energy storage (3,4,(9)(10)(11)(12)(13)(14)(15)(16).…”

“…The current strategy is simply to increase the specific surface area of the electrodes of energy storage systems (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), where nanostructured materials with large specific surface areas have offered exciting opportunities for electrical energy storage devices with a high energy density. For instance, "trench" capacitors containing metal-insulator-metal (MIM) layer stacks have been fabricated inside nanoporous/microporous materials for energy storage (3,4,(9)(10)(11)(12)(13)(14)(15)(16). By successive atomic layer deposition (ALD) of TiN, Al 2 O 3 , and TiN layers, nanotubular MIM capacitors were fabricated in nanoporous anodic aluminum oxide (AAO) membranes, with a unit-area capacitance of ~10 mF/cm 2 for a 1-mm-thick AAO membrane (3) and an energy density of 1.5 Wh/kg (4).…”