scholarly journals Direct X-ray photoconversion in flexible organic thin film devices operated below 1 V

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Laura Basiricò ◽  
Andrea Ciavatti ◽  
Tobias Cramer ◽  
Piero Cosseddu ◽  
Annalisa Bonfiglio ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Thin Film ◽  
X Ray ◽  
Thin Film Devices

Anin situatomic force microscope for normal-incidence nanofocus X-ray experiments

2016 ◽  
Vol 23 (5) ◽  
pp. 1110-1117 ◽  
Author(s):  
M. V. Vitorino ◽  
Y. Fuchs ◽  
T. Dane ◽  
M. S. Rodrigues ◽  
M. Rosenthal ◽  
...  
Keyword(s):  
Thin Film ◽  
Atomic Force Microscope ◽  
High Speed ◽  
Normal Incidence ◽  
Organic Thin Film ◽  
X Ray ◽  
Atomic Force ◽  
Synchrotron Beamlines

A compact high-speed X-ray atomic force microscope has been developed forin situuse in normal-incidence X-ray experiments on synchrotron beamlines, allowing for simultaneous characterization of samples in direct space with nanometric lateral resolution while employing nanofocused X-ray beams. In the present work the instrument is used to observe radiation damage effects produced by an intense X-ray nanobeam on a semiconducting organic thin film. The formation of micrometric holes induced by the beam occurring on a timescale of seconds is characterized.

scholarly journals Flow Cell for Operando X-Ray Photon-in-Photon-out Studies on Photo-Electrochemical Thin Film Devices

2020 ◽  
Author(s):  
Philipp Jäker ◽  
Dino Aegerter ◽  
Till Kyburz ◽  
Roman Staedler ◽  
Rea Fonjallaz ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Oxidation ◽  
High Energy ◽  
Operating Conditions ◽  
High Energy Resolution ◽  
X Ray ◽  
Long Term Stability ◽  
Operando Xas ◽  
Artificial Photosynthetic ◽  
Thin Film Devices

Photo-electro-chemical (PEC) water splitting represents a promising technology towards an artificial photosynthetic device but many fundamental electronic processes, which govern long-term stability and energetics are not well understood. X-ray absorption spectroscopy (XAS), particularly its high energy resolution fluorescence-detected (HERFD) mode, emerges as a powerful tool to study photo-excited charge carrier behavior under operating conditions. The established thin film device architecture of PEC cells provides a well-defined measurement geometry, but it puts many constraints on conducting operando XAS experiments. So far, operando cells have not been developed that enable to concurrently measure highly intense X-ray fluorescence and photo-electro-chemical current without experimental artifacts caused by O<sub>2</sub> and H<sub>2</sub> bubbles formation. Moreover, we are missing a standardized thin film exchange procedure. Here, we address and overcome the instrumental limitations for operando HERFD-XAS to investigate photo- and electrochemical thin film devices. Our cell establishes a measurement routine that will provide experimental access to a broader scientific community, particularly due to the ease of sample exchange. Our operando photo-electro-chemical cell is optimized for the HERFD-XAS geometry and we demonstrate its operation by collecting high-resolution Fe K-edge spectra of hematite (α-Fe<sub>2</sub>O<sub>3</sub>) and ferrite thin film (MFe<sub>2</sub>O<sub>4</sub>, M= Zn, Ni) photoelectrodes during water oxidation.<br>

scholarly journals Percolation of Carbon Nanoparticles in Poly(3-Hexylthiophene) Enhancing Carrier Mobility in Organic Thin Film Transistors

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Chang-Hung Lee ◽  
Chun-Hao Hsu ◽  
Iu-Ren Chen ◽  
Wen-Jong Wu ◽  
Chih-Ting Lin
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Carbon Nanoparticles ◽  
Carrier Mobility ◽  
Organic Thin Film Transistors ◽  
Organic Thin Film ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Printing System

To improve the field-effect mobility of all-inkjet-printed organic thin film transistors (OTFTs), a composite material consisted of carbon nanoparticles (CNPs) and poly(3-hexylthiophene) (P3HT) was reported by using homemade inkjet-printing system. These all-inkjet-printed composite OTFTs represented superior characteristics compared to the all-inkjet-printed pristine P3HT OTFTs. To investigate the enhancement mechanism of the blended materials, the percolation model was established and experimentally verified to illustrate the enhancement of the electrical properties with different blending concentrations. In addition, experimental results of OTFT contact resistances showed that both contact resistance and channel resistance were halved. At the same time, X-ray diffraction measurements, Fourier transform infrared spectra, ultraviolet-visible light, and photoluminescence spectra were also accomplished to clarify the material blending effects. Therefore, this study demonstrates the potential and guideline of carbon-based nanocomposite materials in all-inkjet-printed organic electronics.

Analysis of octadecyltrichlorosilane treatment of organic thin-film transistors using soft x-ray fluorescence spectroscopy

2005 ◽  
Vol 86 (23) ◽  
pp. 232103 ◽  
Author(s):  
S. J. Kang ◽  
Y. Yi ◽  
C. Y. Kim ◽  
C. N. Whang ◽  
T. A. Callcott ◽  
...  
Keyword(s):  
Thin Film ◽  
Fluorescence Spectroscopy ◽  
Thin Film Transistors ◽  
Organic Thin Film Transistors ◽  
Organic Thin Film ◽  
X Ray

Development of organic thin film devices based on Cu(II) complex with tetrathiafulvalene moieties in the ligands

2016 ◽  
Vol 641 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Hiroyuki Nishikawa ◽  
Atsushi Wachi ◽  
Masayuki Chikamatsu ◽  
Reiko Azumi
Keyword(s):  
Thin Film ◽  
Organic Thin Film ◽  
Thin Film Devices

On the validity of MIS-CELIV for mobility determination in organic thin-film devices

2017 ◽  
Vol 110 (15) ◽  
pp. 153504 ◽  
Author(s):  
Oskar J. Sandberg ◽  
Mathias Nyman ◽  
Staffan Dahlström ◽  
Simon Sandén ◽  
Björn Törngren ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Thin Film ◽  
Thin Film Devices
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