A self-powered thin-film radiation detector using intrinsic high-energy current

2015 ◽  
Vol 43 (1) ◽  
pp. 4-15 ◽  
Author(s):  
Piotr Zygmanski ◽  
Erno Sajo
Keyword(s):  
Thin Film ◽  
Radiation Detector ◽  
High Energy ◽  
Energy Current ◽  
Self Powered

Portal MV imaging with thin-film high-energy current X-ray detectors: A Monte Carlo study

2017 ◽  
Vol 44 (12) ◽  
pp. 6128-6137
Author(s):  
Bo Liu ◽  
Piotr Zygmanski ◽  
Erno Sajo
Keyword(s):  
Thin Film ◽  
Monte Carlo ◽  
Monte Carlo Study ◽  
High Energy ◽  
X Ray ◽  
Energy Current

Prototypes of self-powered radiation detectors employing intrinsic high-energy current

2015 ◽  
Vol 43 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Piotr Zygmanski ◽  
Suman Shrestha ◽  
Davide Briovio ◽  
Andrew Karellas ◽  
Erno Sajo
Keyword(s):  
Radiation Detectors ◽  
High Energy ◽  
Energy Current ◽  
Self Powered

Influence of high energy electron irradiation on the characteristics of polysilicon thin film transistors

2006 ◽  
Vol 52 (3) ◽  
pp. 355-359 ◽  
Author(s):  
P. V. Aleksandrova ◽  
V. K. Gueorguiev ◽  
Tz. E. Ivanov ◽  
S. Kaschieva
Keyword(s):  
Thin Film ◽  
Electron Irradiation ◽  
Thin Film Transistors ◽  
High Energy ◽  
Energy Electron ◽  
High Energy Electron

scholarly journals Microfluidic electrochemical cell for in situ structural characterization of amorphous thin-film catalysts using high-energy X-ray scattering

2019 ◽  
Vol 26 (5) ◽  
pp. 1600-1611 ◽  
Author(s):  
Gihan Kwon ◽  
Yeong-Ho Cho ◽  
Ki-Bum Kim ◽  
Jonathan D. Emery ◽  
In Soo Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electrochemical Cell ◽  
Porous Electrode ◽  
High Energy ◽  
Porous Electrodes ◽  
X Ray ◽  
Pdf Analysis ◽  
Thin Film Catalysts

Porous, high-surface-area electrode architectures are described that allow structural characterization of interfacial amorphous thin films with high spatial resolution under device-relevant functional electrochemical conditions using high-energy X-ray (>50 keV) scattering and pair distribution function (PDF) analysis. Porous electrodes were fabricated from glass-capillary array membranes coated with conformal transparent conductive oxide layers, consisting of either a 40 nm–50 nm crystalline indium tin oxide or a 100 nm–150 nm-thick amorphous indium zinc oxide deposited by atomic layer deposition. These porous electrodes solve the problem of insufficient interaction volumes for catalyst thin films in two-dimensional working electrode designs and provide sufficiently low scattering backgrounds to enable high-resolution signal collection from interfacial thin-film catalysts. For example, PDF measurements were readily obtained with 0.2 Å spatial resolution for amorphous cobalt oxide films with thicknesses down to 60 nm when deposited on a porous electrode with 40 µm-diameter pores. This level of resolution resolves the cobaltate domain size and structure, the presence of defect sites assigned to the domain edges, and the changes in fine structure upon redox state change that are relevant to quantitative structure–function modeling. The results suggest the opportunity to leverage the porous, electrode architectures for PDF analysis of nanometre-scale surface-supported molecular catalysts. In addition, a compact 3D-printed electrochemical cell in a three-electrode configuration is described which is designed to allow for simultaneous X-ray transmission and electrolyte flow through the porous working electrode.

scholarly journals Toward self-powered and reliable visible light communication using amorphous silicon thin-film solar cells

2019 ◽  
Vol 27 (24) ◽  
pp. 34542 ◽  
Author(s):  
Meiwei Kong ◽  
Jiaming Lin ◽  
Chun Hong Kang ◽  
Chao Shen ◽  
Yujian Guo ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Visible Light ◽  
Amorphous Silicon ◽  
Visible Light Communication ◽  
Thin Film Solar Cells ◽  
Silicon Thin Film ◽  
Self Powered

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 Charged projectile spectrometry using solid-state nuclear track detector of the PM-355 type

Nukleonika ◽  
2015 ◽  
Vol 60 (3) ◽  
pp. 591-596 ◽  
Author(s):  
Aneta Malinowska ◽  
Marian Jaskóła ◽  
Andrzej Korman ◽  
Adam Szydłowski ◽  
Karol Malinowski ◽  
...  
Keyword(s):  
Solid State ◽  
Detection Efficiency ◽  
Radiation Detector ◽  
High Energy ◽  
High Energy Resolution ◽  
Projectile Energy ◽  
Scanning System ◽  
Nuclear Track Detector ◽  
Temperature Plasma ◽  
Wide Range

Abstract To use effectively any radiation detector in high-temperature plasma experiments, it must have a lot of benefits and fulfill a number of requirements. The most important are: a high energy resolution, linearity over a wide range of recorded particle energy, high detection efficiency for these particles, a long lifetime and resistance to harsh conditions existing in plasma experiments and so on. Solid-state nuclear track detectors have been used in our laboratory in plasma experiments for many years, but recently we have made an attempt to use these detectors in spectroscopic measurements performed on some plasma facilities. This paper presents a method that we used to elaborate etched track diameters to evaluate the incident projectile energy magnitude. The method is based on the data obtained from a semiautomatic track scanning system that selects tracks according to two parameters, track diameter and its mean gray level.

Thermal Model of a Thin Film Pulsed Pyroelectric Generator

2016 ◽  
Author(s):  
Nicholas R. Jankowski ◽  
Andrew N. Smith ◽  
Brendan M. Hanrahan
Keyword(s):  
Thin Film ◽  
Power Generation ◽  
Energy Conversion ◽  
High Speed ◽  
High Energy ◽  
High Energy Density ◽  
Working Fluid ◽  
Film Material ◽  
Thermodynamic Cycles ◽  
The Impact

Recent high energy density thin film material development has led to an increased interest in pyroelectric energy conversion. Using state-of-the-art lead-zirconate-titanate piezoelectric films capable of withstanding high electric fields we previously demonstrated single cycle energy conversion densities of 4.28 J/cm3. While material improvement is ongoing, an equally challenging task involves developing the thermal and thermodynamic process though which we can harness this thermal-to-electric energy conversion capability. By coupling high speed thermal transients from pulsed heating with rapid charge and discharge cycles, there is potential for achieving high energy conversion efficiency. We briefly present thermodynamic equivalent models for pyroelectric power generation based on the traditional Brayton and Ericsson cycles, where temperature-pressure states in a working fluid are replaced by temperature-field states in a solid pyroelectric material. Net electrical work is then determined by integrating the path taken along the temperature dependent polarization curves for the material. From the thermodynamic cycles we identify the necessary cyclical thermal conditions to realize net power generation, including a figure of merit, rEC, or the electrocaloric ratio, to aid in guiding generator design. Additionally, lumped transient analytical heat transfer models of the pyroelectric system with pulsed thermal input have been developed to evaluate the impact of reservoir temperatures, cycle frequency, and heating power on cycle output. These models are used to compare the two thermodynamic cycles. This comparison shows that as with traditional thermal cycles the Ericsson cycle provides the potential for higher cycle work while the Brayton cycle can produce a higher output power at higher thermal efficiency. Additionally, limitations to implementation of a high-speed Ericsson cycle were identified, primarily tied to conflicts between the available temperature margin and the requirement for isothermal electrical charging and discharging.

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