Trap distribution for charge carriers in poly(paraphenylene vinylene) (PPV) and its substituted derivative DPOP-PPV
- 15 July 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 52 (4) , 2587-2598
- https://doi.org/10.1103/physrevb.52.2587
Abstract
In this paper, we present measurements of the charge-carrier transport in the conjugated polymer poly(paraphenylenevinylene) (PPV) and its substituted derivative poly(1,4-phenylene-1,2-diphen- oxyphenyl vinylene) (DPOP-PPV) by using the time-of-flight technique. A method for evaluating the experiments, based on Fourier transform techniques, is presented to calculate the density of localized states from the measured photocurrent within a multiple trapping model. The transport properties of DPOP-PPV can be described by a conventional hopping mechanism, where nearly every monomer acts as a trap. At room temperature, the effective mobility for holes in DPOP-PPV is in the range of /V s, whereas for PPV, a value of less than /V s can be estimated.
This publication has 36 references indexed in Scilit:
- Light-emitting diodes from partially conjugated poly(p-phenylene vinylene)Journal of Applied Physics, 1993
- Chemical control of colour and electroluminescent device efficiency in copolymeric poly(arylenevylenes)Synthetic Metals, 1993
- Electrical and optical characterization of poly(phenylene-vinylene) light emitting diodesSynthetic Metals, 1993
- The vibrational properties and defect structures in vinylene-linked low-band-gap conducting polymersSynthetic Metals, 1991
- Transport, magnetic, and optical properties of electrochemically doped poly(1,4-dimethoxy phenylene vinylene)Physical Review B, 1989
- Defects in the electronic structure of poly (p-phenylene vinylene): Electronic spectra, electrochemical behavior, and molecular orbital calculationsThe Journal of Chemical Physics, 1987
- Ultraviolet and visible spectroscopy of poly(paraphenylene vinylene)The Journal of Chemical Physics, 1987
- Transition from dispersive to nondispersive transport: Photoconduction of polyvinylcarbarzolePhysical Review B, 1987
- Structure investigation of poly(p‐phenylene vinylene)Journal of Polymer Science Part B: Polymer Physics, 1986
- Hopping transport in disordered aromatic solids: a re-interpretation of mobility measurements on PKV and TNFJournal of Physics C: Solid State Physics, 1979