For 3D vertical NAND flash memory, the charge pump output load is much larger than that of the planar NAND, resulting in the performance degradation of the conventional Dickson charge pump. Therefore, a novel all PMOS...For 3D vertical NAND flash memory, the charge pump output load is much larger than that of the planar NAND, resulting in the performance degradation of the conventional Dickson charge pump. Therefore, a novel all PMOS charge pump with high voltage boosting efficiency, large driving capability and high power efficiency for 3D V-NAND has been proposed. In this circuit, the Pellieoni structure is used to enhance the driving capability, two auxiliary substrate bias PMOS transistors are added to mitigate the body effect, and the degradation of the output voltage and boost efficiency caused by the threshold voltage drop is eliminated by dynamic gate control structure. Simulated results show that the proposed charge pump circuit can achieve the maximum boost efficiency of 86% and power efficiency of 50%. The output voltage of the proposed 9 stages charge pump can exceed 2 V under 2 MHz clock frequency in 2X nm 3D V-NAND technology. Our results provide guidance for the peripheral circuit design of high density 3D V-NAND integration.展开更多
Here,we report a new ortho-phenylene-spaced oligourea receptor,L^(1),functionalized at its termini with photoresponsive azobenzene units.This peripheral design minimizes steric constraints,increasing conformational fr...Here,we report a new ortho-phenylene-spaced oligourea receptor,L^(1),functionalized at its termini with photoresponsive azobenzene units.This peripheral design minimizes steric constraints,increasing conformational freedom and enabling dynamic responsiveness.Complexation of L^(1)with diverse anions(HPO_(4)^(2−),PO_(4)^(3−),SO_(4)^(2−),Cl^(−),Br^(−))affords stable assemblies(EE-1 to EE-7),and demonstrates robust reversible photoresponse.The distinct photo-dynamic responses elicited by different anions offer new insights for the design of advanced supramolecular photo-reversible materials.展开更多
文摘For 3D vertical NAND flash memory, the charge pump output load is much larger than that of the planar NAND, resulting in the performance degradation of the conventional Dickson charge pump. Therefore, a novel all PMOS charge pump with high voltage boosting efficiency, large driving capability and high power efficiency for 3D V-NAND has been proposed. In this circuit, the Pellieoni structure is used to enhance the driving capability, two auxiliary substrate bias PMOS transistors are added to mitigate the body effect, and the degradation of the output voltage and boost efficiency caused by the threshold voltage drop is eliminated by dynamic gate control structure. Simulated results show that the proposed charge pump circuit can achieve the maximum boost efficiency of 86% and power efficiency of 50%. The output voltage of the proposed 9 stages charge pump can exceed 2 V under 2 MHz clock frequency in 2X nm 3D V-NAND technology. Our results provide guidance for the peripheral circuit design of high density 3D V-NAND integration.
基金support of the National Natural Science Foundation of China(22471215,22171226)the Natural Science Basic Research Program of Shaanxi(2025JC-QYCX-009)+2 种基金the Natural Science Foundation of Science and Technology Agency of Shanxi Province(202303021212149)the 1331 Project of Shanxi Province,the Youth Project of Science and Technology Department of Shaanxi Province(2024JC-YBQN-0159 and 2024JC-YBQN-0133)the Funding for Scientific Research of Shangluo University(Grant No.22SKY116).
文摘Here,we report a new ortho-phenylene-spaced oligourea receptor,L^(1),functionalized at its termini with photoresponsive azobenzene units.This peripheral design minimizes steric constraints,increasing conformational freedom and enabling dynamic responsiveness.Complexation of L^(1)with diverse anions(HPO_(4)^(2−),PO_(4)^(3−),SO_(4)^(2−),Cl^(−),Br^(−))affords stable assemblies(EE-1 to EE-7),and demonstrates robust reversible photoresponse.The distinct photo-dynamic responses elicited by different anions offer new insights for the design of advanced supramolecular photo-reversible materials.
