Low leakage p-NiO∕i-ZnO∕n-ITO heterostructure ultraviolet sensor

Abstract

Enhancement of near-band-edge photoluminescence of ZnO thin films in sandwich configuration at room temperature

Influence of substrate temperature on electrical and optical properties of p-type semitransparent conductive nickel oxide thin films deposited by radio frequency sputtering

“…As shown in Fig. 7(a), the p-n heterojunction exhibits a steadily rectifying behavior with a threshold voltage of 1.5 V, which can be comparable with literature reports [2,19]. The rectification ratio of the forward to reverse bias current is about 127 at a bias voltage of AE1 V, as shown in Fig.…”

Self-rectifying resistive switching device based on n-ZnO/p-NiO junction

“…The hysteretic current-voltage (I-V) characteristics with self-rectifying effect are both found in the two cases. It confirms that the self-rectifying effect should be ascribed to the interface of n-ZnO/p-NiO, which is in agreement with the presence of p-n junction at the interface between n-ZnO and p-NiO in previous reports [19][20][21][22][23][24]. In the Au/ZnO/NiO/ ITO junction, it is difficult to distinguish high resistance state (HRS) and low resistance state (LRS) at positive bias.…”

“…For example, the conductive filaments of ZnO and NiO are considered to be related to oxygen vacancies or metal ions [15][16][17][18]. Actually, n-ZnO/ p-NiO junction has attracted much attention for the applications in the fields of light-emitted diode, ultraviolet detector, photocatalyst, photovoltaic cell, and piezoelectric nanogenerator over the past 20 years [19][20][21][22][23][24]. Both ZnO and NiO have been individually studied in resistive switching devices.…”

Ni O ∕ Zn O light emitting diodes by solution-based growth

“…In this work, we used low temperature, low cost solution-based growth methods for both p-type NiO film and n-type ZnO nanorods. Although NiO is a transparent p-type semiconductor and NiO / ZnO heterojunctions for photodetector applications exhibited clear rectifying properties, 8,9 no LEDs with p-NiO / n-ZnO heterojunctions have been reported. Also, while NiO can also be fabricated by a simple electrochemical deposition on a conductive substrate, 10 this method is rarely used for fabrication of devices.…”