title: Functionalized Molybdenum Disulfide Nanosheets for 0D-2D Hybrid Nanostructures: Photoinduced Charge Transfer and Enhanced Photoresponse.
abstract: The high-concentration stable dispersion of free-standing mono- or few-layer transition metal dichalcogenide (TMD) nanosheets (NSs) remains a significant barrier for their application in solution-processed optoelectronic devices. Here, we report oleylamine (OLA)- and dodecanethiol (DDT)-assisted exfoliation of MoS2NSs in nonpolar organic solvent 1,2-dichlorobenzene (DCB), which enables high-concentration stable dispersion of free-standing mono- or few-layer NSs. The functionalized MoS2NSs were further utilized for the fabrication of solution-processed 0D-2D hybrids of CuInS2quantum dots (CIS QDs) and MoS2NSs. The strong photoluminescence (PL) quenching and decreased PL lifetimes of CIS QDs attached to MoS2NSs indicates efficient charge transfer from photoexcited CIS to MoS2NSs. The photocurrent of CIS/MoS2hybrid devices is dramatically enhanced compared to that of pure CIS and pristine MoS2-based devices, confirming that efficient charge separation and transfer occur from CIS QDs to MoS2NSs.
authors.affiliation: Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India.|Department of Chemistry, Indian Institute of Technology Delhi , New Delhi, India 110016.
authors.forename: Razi
authors.initials: R
authors.lastname: Ahmad
authors.affiliation: Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India.
authors.forename: Ritu
authors.identifier: http://orcid.org/0000-0002-5420-7627
authors.initials: R
authors.lastname: Srivastava
authors.affiliation: Department of Chemistry, Indian Institute of Technology Delhi , New Delhi, India 110016.
authors.forename: Sushma
authors.initials: S
authors.lastname: Yadav
authors.affiliation: Sophisticated Analytical Equipment Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India.
authors.forename: Dinesh
authors.initials: D
authors.lastname: Singh
authors.affiliation: Advanced Materials & Devices, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India.
authors.forename: Govind
authors.initials: G
authors.lastname: Gupta
authors.affiliation: Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Chand
authors.affiliation: Department of Chemistry, Indian Institute of Technology Delhi , New Delhi, India 110016.
authors.forename: Sameer
authors.initials: S
authors.lastname: Sapra