TY - GEN
T1 - Effect of intermolecular interactions on charge and exciplex formation in high-performance organic semiconductors
AU - Shepherd, Whitney E.B.
AU - Platt, Andrew D.
AU - Banton, Garrett
AU - Hofer, David
AU - Loth, Marsha A.
AU - Anthony, John E.
AU - Ostroverkhova, Oksana
PY - 2011
Y1 - 2011
N2 - We present optical, photoluminescent (PL), and photoconductive properties of functionalized anthradithiophene (ADT) derivatives and their composites. Solution-deposited ADT films exhibit charge carrier mobilities of over 1.5 cm2/(Vs), high PL quantum yields, and high photoconductivity. We show that molecular arrangement and intermolecular interactions significantly contribute to (opto)electronic properties of guest-host thin films of these pi-stacked materials. Specifically, the formation of aggregates plays an important role in establishing efficient conduction pathways in ADT derivatives dispersed in a host matrix. In addition, the extent and nature of aggregation and the resulting changes in PL and photoconductive behavior can be effectively manipulated through different film fabrications techniques. Furthermore, energy transfer and exciplex formation has been shown to occur between two different ADT derivatives, which also alters the photoconductive response of the systems. We explore the dependence of the photoconductive response of such guest-host systems on excitation wavelength.
AB - We present optical, photoluminescent (PL), and photoconductive properties of functionalized anthradithiophene (ADT) derivatives and their composites. Solution-deposited ADT films exhibit charge carrier mobilities of over 1.5 cm2/(Vs), high PL quantum yields, and high photoconductivity. We show that molecular arrangement and intermolecular interactions significantly contribute to (opto)electronic properties of guest-host thin films of these pi-stacked materials. Specifically, the formation of aggregates plays an important role in establishing efficient conduction pathways in ADT derivatives dispersed in a host matrix. In addition, the extent and nature of aggregation and the resulting changes in PL and photoconductive behavior can be effectively manipulated through different film fabrications techniques. Furthermore, energy transfer and exciplex formation has been shown to occur between two different ADT derivatives, which also alters the photoconductive response of the systems. We explore the dependence of the photoconductive response of such guest-host systems on excitation wavelength.
KW - Aggregation
KW - Exciplex
KW - Organic Semiconductors
KW - Photoconductivity
UR - http://www.scopus.com/inward/record.url?scp=79955420351&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955420351&partnerID=8YFLogxK
U2 - 10.1117/12.875375
DO - 10.1117/12.875375
M3 - Conference contribution
AN - SCOPUS:79955420351
SN - 9780819484727
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Organic Photonic Materials and Devices XIII
T2 - Organic Photonic Materials and Devices XIII
Y2 - 24 January 2011 through 26 January 2011
ER -