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Thermal Ligand Desorption in CdSe Quantum Dots by Correlated XPS and STM
Author(s) -
Iacono Fabiola,
de la Cueva Leonor,
Gallego José María,
Juarez Beatriz H.,
Otero Roberto
Publication year - 2016
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201600027
Subject(s) - x ray photoelectron spectroscopy , desorption , scanning tunneling microscope , annealing (glass) , thermal desorption , thermal desorption spectroscopy , semiconductor , nanocrystal , quantum dot , particle (ecology) , materials science , chemistry , analytical chemistry (journal) , chemical engineering , nanotechnology , adsorption , optoelectronics , organic chemistry , metallurgy , oceanography , geology , engineering
Scanning tunneling microscopy performed after annealing treatments of CdSe colloidal semiconductor nanocrystals capped with long alkylphosphonate ligands and short chloride ligands allows observing intra‐ as well as inter‐particle ripening processes. High‐resolution X‐ray photoelectron spectroscopy allows correlating the intra‐particle ripening process to the desorption process of chloride species.