van der Waals integration of mixed-dimensional CeO2@Bi heterostructure for high-performance self-powered photodetector with fast response speed

Liu，Xinlin1; Liu，Cailing1; Fu，Yushuang1; Xu，Yiguo2; Khan，Karim3; Tareen，Ayesha Khan3; Zhang，Ye1

2022-10-15

10.1039/d2nr04428e

Nanoscale   影响因子和分区

2040-3364

2040-3372

Heterostructures have been extensively investigated for optoelectronic devices owing to their fantastic physicochemical properties. Herein, a mixed-dimensional van der Waals heterostructure (vdWH) CeO@Bi, 1D ceria (CeO) loaded with 0D bismuth quantum dots (Bi QDs), is synthesized through a facile hydrothermal bottom-up method. It is found that the fabricated CeO@Bi-based photoelectrochemical (PEC)-type photodetector (PD) shows self-powered photodetection capability with a fast photoresponse speed of 0.02 s. Besides, a photocurrent of 2.00 μA cm and a photoresponsivity of 888.89 μA W under 365 nm illumination are obtained. Furthermore, good long-term cycle stability is also observed after 1 month in a harsh environment, indicating the great potential for practical applications. These results are further supported by density functional theory (DFT) calculations. We believe that the presented work is expected to provide a new pathway for the future utilization of vdWHs for high-performance optoelectronics.

SCI

英语

通讯

National Natural Science Foundation of China["61905157","12004256"] ; University of South China[201RGC009]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000874867500001

ROYAL SOC CHEMISTRY

2-s2.0-85141514555

Scopus

1.School of Chemistry and Chemical Engineering,University of South China,Hengyang,421001,China
2.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
3.School of Mechanical Engineering,Dongguan University of Technology,Dongguan,523808,China

Liu，Xinlin,Liu，Cailing,Fu，Yushuang,et al. van der Waals integration of mixed-dimensional CeO2@Bi heterostructure for high-performance self-powered photodetector with fast response speed[J]. Nanoscale,2022,58(16).

Liu，Xinlin.,Liu，Cailing.,Fu，Yushuang.,Xu，Yiguo.,Khan，Karim.,...&Zhang，Ye.(2022).van der Waals integration of mixed-dimensional CeO2@Bi heterostructure for high-performance self-powered photodetector with fast response speed.Nanoscale,58(16).

Liu，Xinlin,et al."van der Waals integration of mixed-dimensional CeO2@Bi heterostructure for high-performance self-powered photodetector with fast response speed".Nanoscale 58.16(2022).