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Synthesis and Characterization of Ag 8 (Ge 1− x ,Sn x )(S 6− y ,Se y ) Colloidal Nanocrystals
Author(s) -
Zhou Bin,
Xing Yedi,
Miao Shu,
Li Mingrun,
Zhang WenHua,
Li Can
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201404220
Subject(s) - band gap , characterization (materials science) , materials science , nanocrystal , range (aeronautics) , germanium , crystallography , analytical chemistry (journal) , nanotechnology , optoelectronics , chemistry , silicon , chromatography , composite material
A facile colloidal approach to synthesize Ag 8 (Ge 1− x ,Sn x )(S 6− y ,Se y ) 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 Ag 8 GeS 6 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.