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Title: Dual-step photocarrier injection by mixture layer of ZnO QDs and MoS2 NPs on hybrid PdAu NPs

Journal Article · · Materials Research Bulletin

Hybrid UV-photodetector (PD) design consisted of various compatible nano-material systems are drawing significant research interests due to their improved device tunability and functionality. A hybrid ZnO–MoS2/HNP UV-PD design is demonstrated by the mixture layer of zinc oxide (ZnO) quantum dot (QD) and molybdenum di-sulfate (MoS2) nanoparticles (NPs) on the plasmonic hybrid PdAu NP template. The proposed design exhibits an excellent photocurrent of 1.45×10-3 A under the 54.9 mW/mm2 at ± 10 V due to a dual step enhancement of photo-carrier injection. It then leads to the significantly improved performance factors of photo-responsivity 1430 mA/mm2 and detectivity 4.50 × 1010 jones at 0.34 mW/mm2. The rise time (Tr) and fall time (Tf) of 3.37 and 0.35 s are obtained for the ZnO–MoS2/HNP PD. Finally, the demonstrated performance factors indicate that the hybrid ZnO–MoS2/HNP UV-PD platform is one of the best UV-PDs as summarized in Table 1.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; National Research Foundation of Korea (NRF)
Grant/Contract Number:
89233218CNA000001; NRF-2019R1A2C4069438; NRF-2018R1A6A1A03025242
OSTI ID:
1995150
Report Number(s):
LA-UR-22-25124
Journal Information:
Materials Research Bulletin, Vol. 151; ISSN 0025-5408
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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