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- W2891359488 abstract "Abstract An original self‐powered UV photodetector integrating ZnO/CuCrO 2 core–shell nanowire heterostructures is fabricated using low‐cost and scalable chemical deposition techniques operating at moderate temperatures. A 35 nm thick delafossite phase CuCrO 2 shell is formed with high uniformity by aerosol‐assisted chemical vapor deposition over an array of vertically aligned ZnO nanowires grown by chemical bath deposition. The CuCrO 2 shell consists of columnar grains at the top of ZnO nanowires as well as nanograins with some preferential orientations on their vertical sidewalls. The ZnO/CuCrO 2 core–shell nanowire heterostructures exhibit significant diode behavior, with a rectification ratio approaching 1.2 × 10 4 at 1 V and ‐1 V, as well as a high optical absorptance above 85% in the UV part of the electromagnetic spectrum. A high UV responsivity at zero bias under low‐power illumination of up to 3.43 mA W −1 under a 365 nm UV lamp, and up to 5.87 mA W −1 at 395 nm from spectrally resolved measurements, alongside a high selectivity with a UV‐to‐visible (395–550 nm) rejection ratio of 106 is measured. The short rise and decay times of 32 and 35 µs, respectively, both measured at zero bias, further establish these devices as promising candidates for cost‐efficient, all‐oxide self‐powered UV photodetectors." @default.
- W2891359488 created "2018-09-27" @default.
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- W2891359488 date "2018-09-11" @default.
- W2891359488 modified "2023-10-18" @default.
- W2891359488 title "ZnO/CuCrO<sub>2</sub> Core-Shell Nanowire Heterostructures for Self-Powered UV Photodetectors with Fast Response" @default.
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- W2891359488 doi "https://doi.org/10.1002/adfm.201803142" @default.
- W2891359488 hasPublicationYear "2018" @default.
- W2891359488 type Work @default.