title: Synthesis and characterization of Ag8(Ge1-x,Snx )(S6-y ,Sey) colloidal nanocrystals.
abstract: A facile colloidal approach to synthesize Ag8 (Ge1-x ,Snx )(S6-y ,Sey ) nanocrystals (NCs) in a highly controlled way across the entire compositional ranges (0≤x≤1, 0≤y≤6) has been developed. The NCs exhibit a uniform size distribution, highly crystalline structure, over 1 g scalable synthesis, and tunable band gaps in the range of 0.88-1.45 eV by varying their chemical compositions. The Ag8 GeS6 NCs with a band gap of approximately 1.45 eV were employed as a model light harvester to assess their applicability in solar cells by a full solution-processing device, yielding an efficiency of 0.28 % under AM1.5 illumination, demonstrating their application potential in solar energy utilization.
authors.affiliation: State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023 (China).
authors.forename: Bin
authors.initials: B
authors.lastname: Zhou
authors.forename: Yedi
authors.initials: Y
authors.lastname: Xing
authors.forename: Shu
authors.initials: S
authors.lastname: Miao
authors.forename: Mingrun
authors.initials: M
authors.lastname: Li
authors.forename: Wen-Hua
authors.initials: WH
authors.lastname: Zhang
authors.forename: Can
authors.initials: C
authors.lastname: Li
mesh_terms: D003102:Colloids / Q000737:chemistry*; D005857:Germanium / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012666:Semiconductors; D012993:Solar Energy
chemical_list: D003102:Colloids; D005857:Germanium
keywords: colloidal synthesis; nanoparticles; semiconductors; silver; solar cells