All oxide semiconductor-based bidirectional vertical p-n-p selectors for 3D stackable crossbar-array electronics.
Three-dimensional (3D) stackable memory devices including nano-scaled crossbar array are central for the realization of high-density non-volatile memory electronics. However, an essential sneak path issue affecting device performance in crossbar array remains a bottleneck and a grand challenge. Therefore, a suitable bidirectional selector as a two-way switch is required to facilitate a major breakthrough in the 3D crossbar array memory devices. Here, we show the excellent selectivity of all oxide p-/n-type semiconductor-based p-n-p open-based bipolar junction transistors as selectors in crossbar memory array. We report that bidirectional nonlinear characteristics of oxide p-n-p junctions can be highly enhanced by manipulating p-/n-type oxide semiconductor characteristics. We also propose an associated Zener tunneling mechanism that explains the unique features of our p-n-p selector. Our experimental findings are further extended to confirm the profound functionality of oxide p-n-p selectors integrated with several bipolar resistive switching memory elements working as storage nodes.
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.
Yoon Cheol
YC
Bae
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.
Ah Rahm
AR
Lee
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.
Gwang Ho
GH
Baek
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.
Je Bock
JB
Chung
Department of Physics, Hanyang University, Seoul, 133-791, Korea.
Tae Yoon
TY
Kim
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.|Department of Electrical and Computer Engineering, Hanyang University, Seoul 133-791, Korea.
Jea Gun
JG
Park
Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul 133-791, Korea.|Department of Physics, Hanyang University, Seoul, 133-791, Korea.
Jin Pyo
JP
Hong