The contraction of PEDOT films formed on a macromolecular liquid-like surface

Liangqi Ouyang; Mohammad J. Jafari; Wanzhu Cai; Luis Ever Aguirre; Chuanfei Wang; Thomas Ederth; Olle Inganäs

doi:10.1039/c7tc04661h

The contraction of PEDOT films formed on a macromolecular liquid-like surface

Journal of Materials Chemistry C ◽

10.1039/c7tc04661h ◽

2018 ◽

Vol 6 (3) ◽

pp. 654-660 ◽

Cited By ~ 8

Author(s):

Liangqi Ouyang ◽

Mohammad J. Jafari ◽

Wanzhu Cai ◽

Luis Ever Aguirre ◽

Chuanfei Wang ◽

...

Keyword(s):

Polymer Chain ◽

Vapour Phase ◽

Quinoid Structure

Vapour phase polymerized PEDOT on the oxidizer layer adopts a neutral benzenoid structure. After solvent rinsing, the polymer chain is deprotonated and rearranged, giving rise to doped quinoid structure and partly contributing to the contraction of the film.

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Characterization of GaAs/AlGaAs quantum wells and quantum wires by chemical lattice imaging

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100171419 ◽

1994 ◽

Vol 52 ◽

pp. 736-737

Author(s):

A. Carlsson ◽

J.-O. Malm ◽

A. Gustafsson

Keyword(s):

Quantum Well ◽

Quantum Wells ◽

Quantum Wires ◽

Vapour Phase ◽

Quantitative Information ◽

Lattice Imaging ◽

Vapour Phase Epitaxy ◽

Metalorganic Vapour Phase Epitaxy ◽

High Resolution Images

In this study a quantum well/quantum wire (QW/QWR) structure grown on a grating of V-grooves has been characterized by a technique related to chemical lattice imaging. This technique makes it possible to extract quantitative information from high resolution images.The QW/QWR structure was grown on a GaAs substrate patterned with a grating of V-grooves. The growth rate was approximately three monolayers per second without growth interruption at the interfaces. On this substrate a barrier of nominally Al0.35 Ga0.65 As was deposited to a thickness of approximately 300 nm using metalorganic vapour phase epitaxy . On top of the Al0.35Ga0.65As barrier a 3.5 nm GaAs quantum well was deposited and to conclude the structure an additional approximate 300 nm Al0.35Ga0.65 As was deposited. The GaAs QW deposited in this manner turns out to be significantly thicker at the bottom of the grooves giving a QWR running along the grooves. During the growth of the barriers an approximately 30 nm wide Ga-rich region is formed at the bottom of the grooves giving a Ga-rich stripe extending from the bottom of each groove to the surface.

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