Ultrahigh responsivity UV/IR photodetectors based on pure CuO nanowires

Ate, Abdelrahim; Zhu, Huichao; Quan, Xiaotong; Cai, Haiyuan; Wang, Xiaojiao; Tang, Zhiyuan

doi:10.1063/1.4866737

Cited by 10 publications

(2 citation statements)

References 20 publications

(20 reference statements)

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“…Figure 6(c) shows that the overall current amplitude for this system of multiple nanowires is ∼2 orders of magnitude larger than that of the single nanowire. However, the I-V response is more asymmetric because the response of each Au/CuO NW/Au component is not identical as many previous studies reported [43,84,89]. Changes in dark current and photo-current after ns laser irradiation are, however, consistent with that occurring in the single Au/CuO NW/Au system.…”

Section: Resultscontrasting

confidence: 50%

“…Whether laser irradiation can modify the type and the concentration of such defects in p-type semiconductors and how this process may be useful for tailoring the p-type conductivity and photo-conductivity remained unknown. As one of the representative metal-oxide semiconductors with medium bandgap energy, CuO and its one-dimensional nanomaterials, have been widely studied due to low production cost and good suitability for applications in high-performance nano-devices [42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

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Laser modification of Au–CuO–Au structures for improved electrical and electro-optical properties

et al. 2022

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CuO nanomaterials are one of the metal-oxides that received extensive investigations in recent years due to their versatility for applications in high-performance nano-devices. Tailoring the device performance through the engineering of properties in the CuO nanomaterials thus attracted lots of effort. In this paper, we show that nanosecond (ns) laser irradiation is effective in improving the electrical and opto-electrical properties in the copper oxide nanowires (CuO NWs). We find that ns laser irradiation can achieve joining between CuO NWs and interdigital gold electrodes. Meanwhile, the concentration and type of interband defects in CuO can be controlled by ns laser irradiation as well. An increase in the concentration of defect centers, together with a reduction in the potential energy barrier at the Au/CuO interfaces due to laser irradiation increases electrical conductivity and enhances photo-conductivity. We demonstrate that the enhanced electrical and photo-conductivity achieved through ns laser irradiation can be beneficial for applications such as resistive switching and photo-detection.

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Section: Resultscontrasting

confidence: 50%