Optical dephasing in pentacene-doped PMMA under high pressure

Berg, Otto; Chronister, Eric L.
March 1997
Journal of Chemical Physics;3/15/1997, Vol. 106 Issue 11, p4401
Academic Journal
Explores the pressure- and temperature-dependent photon echo results for pentacene doped polymethyl methacrylate. Unique pressure effect observed in which the optical dephasing rate increases as the pressure is increased from ambient pressure to four kbar; Negative correlation between the optical dephasing rate and the spectral hole burning efficiency.


Related Articles

  • Optical dephasing in organic amorphous systems. A photon echo and hole-burning study of pentacene in polymethylmethacrylate. Molenkamp, Laurens W.; Wiersma, Douwe A. // Journal of Chemical Physics;7/1/1985, Vol. 83 Issue 1, p1 

    Picosecond photon echo experiments on pentacene in polymethylmethacrylate (PMMA) show that the homogeneous width exhibits a T1.3 temperature dependence. This behavior is ascribed to coupling of the pentacene transition to randomly distributed low-frequency excitations in the amorphous host. A...

  • Characteristics of a pentacene thin film transistor with periodic groove patterned poly(methylmethacrylate) dielectrics. Qijun Sun; Ju-Hyung Kim; Jung-Hwan Park; Soonmin Seo // Applied Physics Letters;3/8/2010, Vol. 96 Issue 10, p103301 

    Soft contact lamination enabled to assess the effects of angle variation of the periodic groove patterns on the same pentacene thin film transistors with a 140 nm periodic groove patterned dielectric layer. An angle was formed when the source-drain current and the groove direction of the...

  • Low temperature optical dephasing in polymethylmethacrylate: A photon echo study below 1 K. Zilker, S. J.; Haarer, D. // Journal of Chemical Physics;12/15/1996, Vol. 105 Issue 23, p10648 

    The first photon echo experiments on polymethylmethacrylate (PMMA) down to temperatures below 1 K are reported. A linear temperature dependence of the linewidth of the chromophore zinc-meso-tetraphenylporphine (ZnTPP) is obtained below 1 K. Based on this result a flat distribution of two-level...

  • Temperature dependence of optical dephasing in an organic polymer glass (PMMA) from 300 K to 30 K. Nagasawa, Yutaka; Passino, Sean A. // Journal of Chemical Physics;3/22/1997, Vol. 106 Issue 12, p4840 

    Studies the temperature dependence of the optical dephasing mechanism in an organic polymer glass, polymethylmethacrylate. Measurement of transient grating and three pulse photon echo; Recording of the three pulse photon echo peak shift as a function of the temperature; Time constants revealed...

  • Three-dimensional micro-channels in polymers: one-step fabrication. Yamasaki, K.; Juodkazis, S.; Matsuo, S.; Misawa, H. // Applied Physics A: Materials Science & Processing;2003, Vol. 77 Issue 3/4, p371 

    We report on the femtosecond laser fabrication of micro-channels of sub-micrometer cross section recorded in polymethylmethacrylate (PMMA) films in a single processing step. Both axial lengths of an elliptical cross section smaller than 0.4 μm were achieved for a fabrication irradiance close...

  • Three-dimensional reversible laser micromachining with subnanojoule femtosecond pulses based on two-photon photochromism. Konorov, S.O.; Fedotov, A.B.; Zheltikov, A.M. // Applied Physics B: Lasers & Optics;2003, Vol. 76 Issue 6, p707 

    Three-dimensional reversible laser micromachining of polymer materials based on two-photon photochromism is demonstrated. Unamplified 60-fs, 0.5-nJ pulses of 790-nm Ti:sapphire laser radiation are used to induce a refractive-index change in a polymethyl methacrylate (PMMA) sample doped with...

  • Pentacene-based metal-insulator-semiconductor memory structures utilizing single walled carbon nanotubes as a nanofloating gate. Sleiman, A.; Rosamond, M. C.; Alba Martin, M.; Ayesh, A.; Al Ghaferi, A.; Gallant, A. J.; Mabrook, M. F.; Zeze, D. A. // Applied Physics Letters;1/9/2012, Vol. 100 Issue 2, p023302 

    A pentacene-based organic metal-insulator-semiconductor memory device, utilizing single walled carbon nanotubes (SWCNTs) for charge storage is reported. SWCNTs were embedded, between SU8 and polymethylmethacrylate to achieve an efficient encapsulation. The devices exhibit capacitance-voltage...

  • Nonvolatile floating gate organic memory device based on pentacene/CdSe quantum dot heterojuction. Shin, Ik-Soo; Kim, Jung-Min; Jeun, Jun-Ho; Yoo, Seok-Hyun; Ge, Ziyi; Hong, Jong-In; Ho Bang, Jin; Kim, Yong-Sang // Applied Physics Letters;4/30/2012, Vol. 100 Issue 18, p183307 

    An organic floating-gate memory device using CdSe quantum dots (QDs) as a charge-trapping element was fabricated. CdSe QDs were localized beneath a pentacene without any tunneling insulator, and the QD layer played a role as hole-trapping sites. The band bending formed at the junction between...

  • Oxygen plasma treatment and postaging of pentacene field-effect transistors for improved mobility. Shin, Kwonwoo; Yang, Sang Yoon; Yang, Chanwoo; Jeon, Hayoung; Park, Chan Eon // Applied Physics Letters;7/9/2007, Vol. 91 Issue 2, p023508 

    The authors fabricated pentacene transistors with high mobilities by controlling the morphology of pentacene film through adjustments to the surface energy of the gate dielectrics with oxygen plasma treatment, and then by improving the interfacial properties through postaging. The increased...


Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics