TY - JOUR
T1 - Study of photoluminescence excitation spectra of tris(8-hydroxyquinoline) aluminum(III) (Alq3) in solutions and films
AU - Wang, Zhoulu
AU - Tsuboi, Taiju
AU - Liu, Xiang
AU - Huang, Wei
PY - 2014/7
Y1 - 2014/7
N2 - Absorption, photoluminescence, and photoluminescence excitation (PLE) spectra have been investigated for tris(8-hydroxyquinoline)aluminum(III) (Alq3) in solution at various Alq3 concentrations and in doped and neat films. The redshifted PLE spectra, with respect to the absorption spectra, are obtained, together with a dip located near the absorption band peak. The dip becomes deeper with increasing concentration. It is found that the unusual PLE spectra are caused by the penetration depth effect, not by previously suggested microcrystallites of Alq3.
AB - Absorption, photoluminescence, and photoluminescence excitation (PLE) spectra have been investigated for tris(8-hydroxyquinoline)aluminum(III) (Alq3) in solution at various Alq3 concentrations and in doped and neat films. The redshifted PLE spectra, with respect to the absorption spectra, are obtained, together with a dip located near the absorption band peak. The dip becomes deeper with increasing concentration. It is found that the unusual PLE spectra are caused by the penetration depth effect, not by previously suggested microcrystallites of Alq3.
KW - UV/Vis spectroscopy
KW - fluorescence spectroscopy
KW - organic light-emitting diodes
KW - penetration depth effect
KW - photochemistry
UR - http://www.scopus.com/inward/record.url?scp=84905101871&partnerID=8YFLogxK
U2 - 10.1002/ijch.201400053
DO - 10.1002/ijch.201400053
M3 - 文章
AN - SCOPUS:84905101871
SN - 0021-2148
VL - 54
SP - 927
EP - 930
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
IS - 7
ER -