Implantation and annealing effects in molecular organic films

Pakhomov, Georgy L.; Pakhomov, L. G.; Shashkin, V. I.; Tura, J.M.; Ribó, Josep M.; Ottaviano, L.

doi:10.1016/s0168-583x(02)00778-4

Cited by 9 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 2, based on the minimum Gaussian peaks to yield the best fit after the background subtraction. [32] In Figure 3a, peaks #2 (284.5 eV) and #3 (286.0 eV) of the pristine HY-PPV are associated with hydrocarbon atoms (C-C and C-H) and carbon atoms attached to the oxygen (C-O) of HY-PPV molecules, discussed in the above paragraph, respectively. The #4 (287.9 eV) peak is tentatively attributed to C --O bonds and the #5 (288.5 eV) peak is assigned to the carbon atoms in a highly oxidative environment, such as those in carboxylate ester groups.…”

Section: Introductionmentioning

confidence: 91%

Organic‐Oxide Cathode Buffer Layer in Fabricating High‐Performance Polymer Light‐Emitting Diodes

Lee

Huang

Pakhomov

et al. 2008

Adv Funct Materials

View full text Add to dashboard Cite

Spin‐casting or thermal evaporation in vacuum of a salt‐free, neutral, organic‐oxide ultra‐thin film as a buffer layer with an aluminum (Al) cathode has become an alternative approach for fabricating high‐performance organic and polymer light‐emitting diodes (O/PLEDs). [Guo et al., Appl. Phys. Lett. 2006, 88, 113501 and Appl. Phys. Lett. 2006, 89, 053507] The electroluminescence efficiency of phenyl‐substituted poly(para‐phenylene vinylene) copolymer‐based PLEDs is 0.16 cd A−1 when Al is used as the device cathode, but is approximately two orders of magnitude higher, 14.53 cd A−1, when an organic oxide/Al composite cathode is used. The polymer/metal junction in PLEDs with and without depositing an ultra‐thin organic oxide interlayer is studied by X‐ray photoelectron spectroscopy. Experimental results indicate that the deposition of an Al electrode causes the oxidation at the surface of the light‐emissive polymer layer. Introducing an organic‐oxide cathode buffer layer suppresses the oxidation and the diffusion of the Al atoms into the functional polymer layer. The formation of a carbide‐like (negative carbon) thin layer, which accompanies interfacial interactions, is critical to the injection of electrons through the Al cathode. The balanced charge injection is responsible for the substantially improved device performance. This process is specific to the organic oxide/Al interface, as revealed by a comparison with similar device configurations that have Ag as the electrode, in which no significant interaction in the interface is observed.

show abstract

Section: Introductionmentioning

confidence: 91%

Organic‐Oxide Cathode Buffer Layer in Fabricating High‐Performance Polymer Light‐Emitting Diodes

Lee

Huang

Pakhomov

et al. 2008

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…It is an unexpected impurity even for the material of technical grade. Other techniques (X-ray photoelectron spectroscopy [8]) did not reveal this element in remarkable amounts. Additionally, by comparing between the samples (Fig.…”

Section: The Sims Analysis Of the Surfacementioning

confidence: 81%

“…1d, after such a treatment the grain diameter becomes larger, but the vertical contrast is almost unaffected (Table 1). One can notice a slight faceting of the grains, which is typical for annealed PcM films [8,12].…”

Section: The Film Topologymentioning

confidence: 84%

See 1 more Smart Citation

Plasma irradiation effects in phthalocyanine films

Pakhomov

Дроздов

Vostokov

2004

Applied Surface Science

View full text Add to dashboard Cite

show abstract

“…4. The deconvolutions of spectra are based on the minimum Gaussian peaks to make the best fit after the background subtraction [31]. For P-PPV film without any solvent treatment in Fig.…”

Section: Resultsmentioning

confidence: 99%