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Effect of Ca interlayer thickness on electron injection of lithium quinolate/Ca/Al cathodes

Cited 2 time in Web of Science Cited 3 time in Scopus
Authors
Kim, Sung Hyun; Yoon, Ji Hwan; Jang, Jyongsik; Lee, Jun Yeob
Issue Date
2008-05-15
Publisher
Elsevier
Citation
Applied Surface Science 254 (2008) 7061-7063
Keywords
CathodePower efficiencyEnergy barrierUltraviolet photoelectron spectroscopy
Abstract
Electron injection behavior of lithium quinolate (Liq)/Ca/Al cathode was investigated by using X-ray
photoelectron spectroscopy and ultraviolet photoelectron spectroscopy (UPS). Interfacial energy barrier
lowering of Liq/Ca/Al cathode was dependent on Ca thickness and maximum energy level shift was
observed at a Ca thickness of 1 nm. Maximum current density could be obtained in Liq/Ca/Al device at a
Ca thickness of 1 nm and it was well correlated with energy level shift from UPS measurement. Power
efficiency of Liq/Al device could be improved by more than 70% by inserting Ca layer between Liq and Al.
ISSN
0169-4332
Language
English
URI
https://hdl.handle.net/10371/49116
DOI
https://doi.org/10.1016/j.apsusc.2008.05.169
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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