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Ultrafast Solid-State Electron Transfer in Donor-Acceptor Conducting Polymers.

DE2001768861

Publication Date	2000
Personal Author	McBranch, D. W.; Klimov, V. I.; Kraabel, B. A.; Maniloff, E. S.; Xu, S.
Page Count	22
Abstract	The objective of this project was to systematically study the nature of photoexcitations and the physics of electron transfer in donor-acceptor conducting polymer materials. Specifically we were interested in gaining a better understanding of the various steps involved in the charge transfer: the excitation events, the charge transfer itself, and the stabilization mechanism. Our studies provide an explanation for experimental observations that charge transfer is linear in pump intensity in donor-acceptor blends and is a quadratic process in films of pristine polymers. We demonstrated that charge transfer in polymeric systems can be used for generation of transient gratings applicable, for example, in ultrafast image processing, optical switching, and beam steering.
Keywords	Polymers Electron transfer Surface chemistry Image processing Optical switching Beam steering Electric conductivity Solid state physics Protons Spin spin interactions
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46D - Solid State Physics 46C - Optics & Lasers
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Oak Ridge, TN. Office of Scientific and Technical
Supplemental Notes	Sponsored by Department of Energy, Oak Ridge, TN. Office of Scientific and Technical Information.
Document Type	Technical Report
NTIS Issue Number	200120
Contract Number	DE-W-7405-ENG-36

Ultrafast Solid-State Electron Transfer in Donor-Acceptor Conducting Polymers.

Ultrafast Solid-State Electron Transfer in Donor-Acceptor Conducting Polymers.
DE2001768861

Publication Date	2000
Personal Author	McBranch, D. W.; Klimov, V. I.; Kraabel, B. A.; Maniloff, E. S.; Xu, S.
Page Count	22
Abstract	The objective of this project was to systematically study the nature of photoexcitations and the physics of electron transfer in donor-acceptor conducting polymer materials. Specifically we were interested in gaining a better understanding of the various steps involved in the charge transfer: the excitation events, the charge transfer itself, and the stabilization mechanism. Our studies provide an explanation for experimental observations that charge transfer is linear in pump intensity in donor-acceptor blends and is a quadratic process in films of pristine polymers. We demonstrated that charge transfer in polymeric systems can be used for generation of transient gratings applicable, for example, in ultrafast image processing, optical switching, and beam steering.
Keywords	Polymers Electron transfer Surface chemistry Image processing Optical switching Beam steering Electric conductivity Solid state physics Protons Spin spin interactions
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46D - Solid State Physics 46C - Optics & Lasers
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Oak Ridge, TN. Office of Scientific and Technical
Supplemental Notes	Sponsored by Department of Energy, Oak Ridge, TN. Office of Scientific and Technical Information.
Document Type	Technical Report
NTIS Issue Number	200120
Contract Number	DE-W-7405-ENG-36