Gu, Minseon Lee, Keun Wook Park, Beomjin Joo, Beom Soo Chang, Young Jun Park, Dong-Wook Han, Moonsup 2024-01-19T08:32:33Z 2024-01-19T08:32:33Z 2023-08-24 2023-10 1862-6254 https://pubs.kist.re.kr/handle/201004/113231 Hybrid 2D/0D structures with various 2D materials and 0D quantum dots (QDs) have been studied to overcome the limitations of 2D materials. In this work, a hybrid structure with MoS2 and silicon quantum dots (Si QDs) as a photodetector is developed. The I-V transfer characteristics show a threshold voltage shift after decorating Si QDs on MoS2, which results from an n-type doping effect to the MoS2 channel from the Si QDs. The field-effect mobility of the MoS2/Si QDs device is increased by & AP;5.8 times compared with that of the bare MoS2 device. It is understood that the mobility enhancement is attributed to the surface defect passivation of MoS2 at the interface with Si QDs. It is observed that the photoresponsivity of the MoS2/Si QDs structure is improved by & AP;7.7 times compared with that of the bare MoS2 device under 500 nm illumination. Additionally, it is observed that the photoluminescence (PL) intensity of MoS2 is increased about 4.5 times after decoration of Si QDs. The band alignment as type I at the interface between the Si QDs and MoS2 is interpreted. The mobility enhancement and the photoexcited charge transfer (CT) between the MoS2 and the Si QDs due to the illumination lead to enhancing the photoresponsivity of the MoS2/Si QDs hybrid structure. English Wiley - VCH Verlag GmbH & CO. KGaA Photoresponsivity Enhancement of Monolayer MoS2 by Silicon Quantum Dots Article 10.1002/pssr.202300220 1 physica status solidi (RRL) - Rapid Research Letters, v.17, no.10 physica status solidi (RRL) - Rapid Research Letters 17 10 N scie scopus 001044948600001 2-s2.0-85167464355 Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Materials Science Physics Article MOLYBDENUM-DISULFIDE PHOTODETECTORS PHOTOLUMINESCENCE LUMINESCENCE BAND photodetectors photoresponsivity silicon quantum dots MoS2