Absorption cross-sections of hole polarons in glassy and β-phase polyfluorene

Absorption induced by electrochemically injected holes is studied in poly-9,9-dioctylfluorene (PFO) films. Injected charges form positive polarons which are delocalised over four fluorene units in the glassy phase and about seven fluorene units in its β-phase. Polaron absorption cross-sections at the 640 nm peak are similar to the published values of chemically reduced oligofluorenes in solution. The absorption cross-section of polaron in the β-phase at 470 nm is about eight times smaller than the stimulated emission cross-section derived from published data. This indicates that β-phase-rich PFO is an attractive candidate for a light-emitting layer in double-heterostructure organic laser diodes.

The Hansen-Roach cross sections : a graphical representation /

"October 1988."

Factors affecting traffic operations on seven-lane cross sections. Final report.

Texas Department of Transportation, Austin

Summary of flow loss between selected cross sections on the Rio Grande in and near Albuquerque, New Mexico /

Includes bibliographical references (p. 30).

Nuclear data : a collection of experimental values of half-lives, radiation energies, relative isotopic abundances, nuclear moments and cross sections /

Bibliography: p. 275-309.

Nuclear cross sections and technology : proceedings of a conference, Washington, D.C., March 3-7, 1975 /

Conference sponsored by the Reactor and Shielding Division of the American Nuclear Society and others.

Neutron cross sections

Mode of access: Internet.

Calculated atomic photoeffect cross sections by modified Stobbe theory for atomic number from Z=2 through Z=50, add photon energies between 0.5 keV and 40.0 keV.

Mode of access: Internet.

Cross sections for transuranium element production /

"Reactor technology- - TID-4500."

Neutron cross sections for titanium, potassium, magnesium, nitrogen, aluminum, silicon, sodium, oxygen, and manganese : final report covering the period 20 March, 1961 - 31 January, 1962 /

"For the U.S. Army Chemical Corps Nuclear Defense Laboratory"--Fore.

Analysis of (n, 2n) cross sections for nuclei of mass A>30 /

"Physics; Reactor technology--TID-4500, 36th ed."

Plan showing cross-sections of pond.

Pencil on tracing paper; plan, 4 sections of pond depicted in RIP4;; signed; 90 x 67 cm.; Scale: 1" = 10' [from photographic copy by Lance Burgharrdt]

Nuclear data : a collection of experimental values of half-lives, radiation energies, relative isotopic abundances, nuclear moments, and cross sections.

sup. 1. January to July 1950 -- sup. 2. July 1950 to January 1951 -- sup. 3. January to July 1951.