Ghosh, R. et al.R. et al.GhoshYANG-FANG CHEN2021-07-282021-07-28202016136810https://www.scopus.com/inward/record.url?eid=2-s2.0-85092743138&partnerID=40&md5=763b1a0afff4cb9bd6f22623d63b70eahttps://scholars.lib.ntu.edu.tw/handle/123456789/574963Nanoscrolls are a class of nanostructures where atomic layers of 2D materials are stacked consecutively in a coaxial manner to form a 1D spiral topography. Self-assembly of chemical vapor deposition grown 2D WS2 monolayer into quasi-1D van der Waals scroll structure instigates a plethora of unique physiochemical properties significantly different from its 2D counterparts. The physical properties of such nanoscrolls can be greatly manipulated upon hybridizing them with high-quantum-yield colloidal quantum dots, forming 0D/2D structures. The efficient dissociation of excitons at the heterojunctions of QD/2D hybridized nanoscrolls exhibits a 3000-fold increased photosensitivity compared to the pristine 2D-material-based nanoscroll. The synergistic effects of confined geometry and efficient QD scatterers produce a nanocavity with multiple feedback loops, resulting in coherent lasing action with an unprecedentedly low lasing threshold. Predominant localization of the excitons along the circumference of this helical scroll results in a 12-fold brighter emission for the parallel-polarized transition compared to the perpendicular one, as confirmed by finite-difference time-domain simulation. The versatility of hybridized nanoscrolls and their unique properties opens up a powerful route for not-yet-realized devices toward practical applications. © 2020 Wiley-VCH GmbHpolarized optical properties; QD–2D hybrid nanoscrolls; ultrahigh sensitivity photodetectors; ultralow threshold lasersChemical vapor deposition; Excitons; Finite difference time domain method; Heterojunctions; Monolayers; Semiconductor quantum dots; Time domain analysis; Topography; Tungsten compounds; Van der Waals forces; Colloidal quantum dots; Confined geometries; Efficient dissociation; Finite difference time domain simulations; Physio-chemical properties; Polarized transition; Synergistic effect; Ultra-low threshold; Hybrid materialsjournal article10.1002/smll.202003944330794622-s2.0-85092743138WOS:000581097900001