Photocarrier transport and trapping processes in doped polyethylene terephthalate films

Journal Article · Mon Apr 01 00:00:00 EST 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.335441· OSTI ID:6063678

Kurtz, S R; Arnold, C Jr

The radiation-induced conductivity of polyethylene terephthalate film is modified by doping this polymer with electron acceptor molecules. Detailed results of x-ray induced thermally stimulated current and photoconductivity experiments are reported for one dopant, 2, 4, 7-trinitro-9-fluorenone. At dopant concentrations< or approx. =10/sup 19/ molecules/cm/sup 3/, this impurity acts as a deep trap for photocarriers, radically decreasing the radiation-induced conductivity of the doped film. The kinetics of photocarrier trapping in a host material exhibiting dispersive transport is discussed. At dopant concentrations > or approx. =10/sup 20/ molecules/cm/sup 3/, the radiation-induced conductivity increases due to the onset of photocarrier transport among the electron acceptor molecules. Utilizing the physical processes discussed in this work, it is possible to develop dielectric materials displaying selected levels of radiation-induced conductivity.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• OSTI ID: 6063678
• Journal Information: J. Appl. Phys.; (United States), Vol. 57:7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
POLYESTERS
CHARGED-PARTICLE TRANSPORT
PHOTOCONDUCTIVITY
CHARGE CARRIERS
CRYSTAL DOPING
DIELECTRIC MATERIALS
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
KINETICS
POLYMERS
TRAPPING
X RADIATION
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ESTERS
IONIZING RADIATIONS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
RADIATION TRANSPORT
RADIATIONS
360404* - Materials- Polymers &amp; Plastics- Physical Properties- (-1987)