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Autor:
Emil List, Wilhelm Graupner, Joseph Shinar, C.-H. Kim, B. L. Uhlhorn, Günther Leising, J. Partee
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 361:1-6
Recent studies of frequency resolved DF due to T-T annihilation to singlet excitons (1S*) in π-conjugated polymers are reviewed, and the significance of this process is compared to that of other long-lived processses affecting the PL, in particular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6101db257a9e7f4642aed42ff65ebcf5
https://doi.org/10.1080/10587250108025709
https://doi.org/10.1080/10587250108025709
Publikováno v:
Synthetic Metals. 116:185-188
The excitation energy migration (EEM) in methyl-substituted ladder-type poly(para-phenylene) (m-LPPP) doped with small amounts of the red emitter poly(perylene-co-diethynylbenzene) (PPDB) was studied by photoluminescence (PL) detected magnetic resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53f51ca8768dab54d040f3798809b01c
https://doi.org/10.1016/s0379-6779(00)00483-5
https://doi.org/10.1016/s0379-6779(00)00483-5
Autor:
Ryan C. Smith, Christoph Gadermaier, J. Partee, Douglas L. Gin, Günther Leising, Peter Markart, Joseph Shinar, W. Graupner, Emil List
Publikováno v:
Synthetic Metals. :523-526
We have used continuous wave photoinduced absorption (PIA) to probe the (spin-1/2) polaron and (spin-1) triplet excitations in bulk poly(para-phenylene vinylene) (PPV) films and isolated PPV chains incorporated into a self-assembled matrix ordered at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5e739d5c45c3644898866f22a08de35
https://doi.org/10.1016/s0379-6779(99)00411-7
https://doi.org/10.1016/s0379-6779(99)00411-7
Autor:
J. Partee, Günther Leising, Egbert Zojer, U. Scherf, Klaus Müllen, Joseph Shinar, Klaus Petritsch, Wilhelm Graupner, Emil List
Publikováno v:
Physical Review B. 61:10807-10814
The photophysics of methyl-bridged poly(para-phenylene)-type ladder polymer (m-LPPP) and oligomer films and solutions is described and discussed. The spin sensitive properties, such as the formation and properties of polaron pairs and triplet exciton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7d7abcc4ef2135862ce403c3b76718b
https://doi.org/10.1103/physrevb.61.10807
https://doi.org/10.1103/physrevb.61.10807
Autor:
Douglas L. Gin, Günther Leising, Ryan C. Smith, J. Partee, Emil List, Wilhelm Graupner, Joseph Shinar, Peter Markart
Publikováno v:
Optical Materials. 12:369-372
We used the spectroscopic technique of photoluminescence detected magnetic resonance (PLDMR) to monitor the dynamics of singlet excitons as well as polarons of isolated poly(p-phenylenevinylene) (PPV) chains incorporated into a self-assembled matrix,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::367cbf279fb23812611db9786c160cfe
https://doi.org/10.1016/s0925-3467(99)00067-1
https://doi.org/10.1016/s0925-3467(99)00067-1
Publikováno v:
Physical Review Letters. 82:3673-3676
The delayed fluorescence of poly(p -phenylene vinylene) (PPV) and poly(p -phenylene ethynylene) (PPE) derivative solids and frozen solutions at 20thinspthinspK is described. It provides strong evidence for triplet-triplet annihilation to singlets exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daf44015a901abfced0c7909f991d5cf
https://doi.org/10.1103/physrevlett.82.3673
https://doi.org/10.1103/physrevlett.82.3673
Publikováno v:
Chemical Physics. 227:57-64
The optical properties of ordered and disordered α-sexithiophene (α-6T) thin films are investigated by a variety of spectroscopies. The dominant low-lying even and odd parity excitons are identified by absorption and electroabsorption spectroscopie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67fabb3fdbf796442271a51a104abd83
https://doi.org/10.1016/s0301-0104(97)00303-0
https://doi.org/10.1016/s0301-0104(97)00303-0
Autor:
Günther Leising, Wilhelm Graupner, Yves Geerts, U. Rohr, J. Partee, Ullrich Scherf, Emil List, Markus Wohlgenannt, P. Schlichting, Klaus Müllen, Joseph Shinar
Publikováno v:
Optical Materials. 9:494-497
A guest-host-system based on a few hundred ppm of the red emitting poly(perylene-co-diethynylbenzene) (PPDB) in blue emitting ladder-type poly(para-phenylene) (LPPP) can be used to build efficient white light emitting devices. Upon photoexcitation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d23891cbf916fc39d0541215b4e8616
https://doi.org/10.1016/s0925-3467(97)00136-5
https://doi.org/10.1016/s0925-3467(97)00136-5
Publikováno v:
Physical Review B. 55:R1930-R1933
Results of surface photovoltage spectroscopy on free-standing porous silicon films fabricated from boron-doped Si wafers of various resistivities are presented. We find that all the films have bandtails, which are about 0.3 eV wide, and their optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c8885c69cc3f7b8d70573add54e1513
https://doi.org/10.1103/physrevb.55.r1930
https://doi.org/10.1103/physrevb.55.r1930