TY - JOUR
T1 - Study of the exciton relaxation and recombination processes of a heteromolecular interface fabricated by a molecular superlattice growth technique
AU - Hiroshiba, Nobuya
AU - Morimoto, Kenta
AU - Hayakawa, Ryoma
AU - Chikyow, Toyohiro
AU - Wakayama, Yutaka
AU - Matsuishi, Kiyoto
N1 - Funding Information:
One of the author N.H. acknowledges the financial support by Japan Society for the Promotion of Science (JSPS) Research Fellowships for Young Scientists and Grant-in-Aid for JSPS Fellows (22-1624).
PY - 2011/8/25
Y1 - 2011/8/25
N2 - The temperature dependences of the photoluminescence (PL) spectra of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8)/ Quaterrylene (QT) heteromolecular thin film and neat-PTCDI-C8 thin film were investigated to elucidate the effects of a heteromolecular interface on exciton relaxation and recombination processes. The PL spectra were deconvoluted into six components related to Frenkel, two charge-transfer (CT), and excimer exciton states. With the heteromolecular thin film, we found the behavior of the CT excitons to be intriguingly different in terms of luminous efficiency and temperature dependence from that of the Frenkel exciton. In this Letter, we provide detailed analyses of the exciton relaxation and recombination processes at a heteromolecular interface.
AB - The temperature dependences of the photoluminescence (PL) spectra of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8)/ Quaterrylene (QT) heteromolecular thin film and neat-PTCDI-C8 thin film were investigated to elucidate the effects of a heteromolecular interface on exciton relaxation and recombination processes. The PL spectra were deconvoluted into six components related to Frenkel, two charge-transfer (CT), and excimer exciton states. With the heteromolecular thin film, we found the behavior of the CT excitons to be intriguingly different in terms of luminous efficiency and temperature dependence from that of the Frenkel exciton. In this Letter, we provide detailed analyses of the exciton relaxation and recombination processes at a heteromolecular interface.
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U2 - 10.1016/j.cplett.2011.07.016
DO - 10.1016/j.cplett.2011.07.016
M3 - Article
AN - SCOPUS:80051799939
VL - 512
SP - 227
EP - 230
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -