Structure, transport and photoconductance of PbS quantum dot monolayers functionalized with a copper phthalocyanine derivativeElectronic supplementary information (ESI) available: Materials and methods. (S1) XPS and FT-IR characterization of ligand exchange. (S2) Size histogram of PbS nanocrystals. (S3) Description of the cell used for self-assembly. (S4) GISAXS Fit. (S5) XRR and density profile. (S6-S10) Description of the confocal microscopy set-up. See DOI: 10.1039/c6cc07878h

We simultaneously surface-functionalize PbS nanocrystals with Cu 4,4′,4′′,4′′′-tetraaminophthalocyanine and assemble this hybrid material into macroscopic monolayers. Electron microscopy and X-ray scattering reveal a granular mesocrystalline structure with strong coherence between the atomic lattice and the superlattice of nanocrystals within each domain. Terahertz spectroscopy and field-effect transistor measurements indicate efficient coupling of holes throughout the hybrid thin film, in conjunction with a pronounced photoresponse. We demonstrate the potential of this material for optoelectronic applications by fabricating a light-effect transistor. We simultaneously surface-functionalize PbS nanocrystals with Cu 4,4′,4′′,4′′′-tetraaminophthalocyanine and assemble this hybrid material into macroscopic monolayers.