Results 41 to 50 of about 5,689 (215)

Artefatos na cintilografia de perfusão miocárdica na CZT / Myocardial perfusion scintigraphy artifacts in CZT

open access: yesBrazilian Journal of Health Review, 2021
O presente artigo teve como objetivo identificar os principais artefatos que podem ser gerados na cintilografia de perfusão miocárdica executada em gama câmara dedicada ao estudo cardíaco com detectores CZT através da análise de exames de cintilografia de perfusão miocárdica realizados no nosso serviço.
Mascarenhas, Amanda Sofia Silva   +3 more
openaire   +3 more sources

Highly-crystallized quaternary chalcopyrite nanocrystals via a high-temperature dissolution–reprecipitation route [PDF]

open access: yes, 2011
Quaternary chalcopyrite (Cu2CoSnS4, Cu2ZnSnS4) nanocrystals displaying high crystallization and controlled morphology were synthesized via a high-temperature growth regime achieved by dissolution–reprecipitation of tailored ultrafine precursors in the ...
Balocchi, Andréa   +4 more
core   +2 more sources

Efficient first-principles calculation of phonon assisted photocurrent in large-scale solar cell devices [PDF]

open access: yes, 2018
We present a straightforward and computationally cheap method to obtain the phonon-assisted photocurrent in large-scale devices from first-principles transport calculations.
Brandbyge, Mads   +4 more
core   +2 more sources

A Study of Energy Band Gap Temperature Relationships for Cu2ZnSnS4 Thin Films

open access: yes, 2011
The temperature dependent band gap energy of Cu2ZnSnS4 thin film was studied in the temperature range of 77 to 410 K. Various relevant parameters which explain the temperature variation of the fundamental band gap have been calculated using empirical and
Free, Michael L, Sarswat, Prashant K
core   +1 more source

The Aims of the Criminal Law [PDF]

open access: yes, 1958
Cu2ZnSnS4(CZTS) is an interesting material for sustainable photovoltaics, but efficiencies are limitedby the low open-circuit voltage. A possible cause of this is disorder among the Cu and Zn cations, aphenomenon which is difficult to detect by standard ...
Alain Lafond   +5 more
core   +4 more sources

Crystal structure and electronic structure of quaternary semiconductors Cu$_2$ZnTiSe$_4$ and Cu$_2$ZnTiS$_4$ for solar cell absorber

open access: yes, 2012
We design two new I2-II-IV-VI4 quaternary semiconductors Cu$_2$ZnTiSe$_4$ and Cu$_2$ZnTiS$_4$, and systematically study the crystal and electronic structure by employing first-principles electronic structure calculations.
Blaha P.   +5 more
core   +1 more source

The Proposed High Energy Telescope (HET) for EXIST [PDF]

open access: yes, 2010
The hard X-ray sky now being studied by INTEGRAL and Swift and soon by NuSTAR is rich with energetic phenomena and highly variable non-thermal phenomena on a broad range of timescales.
Allen, B.   +12 more
core   +2 more sources

Influence of annealing conditions on the performance of sputtered grown CZTS thin film solar cells

open access: yesAIP Advances, 2022
Kesterite Cu2ZnSnS4 (CZTS), with direct and tunable bandgap, high absorption coefficient, low-cost processing, earth-abundance, and non-toxicity, has become a promising absorber material for emerging thin film solar cells.
Afrina Sharmin   +3 more
doaj   +1 more source

Influence of deep levels on the electrical transport properties of CdZnTeSe detectors

open access: yes, 2018
We investigated the influence of deep levels on the electrical transport properties of CdZnTeSe radiation detectors by comparing experimental data with numerical simulations based on simultaneous solution of drift-diffusion and Posisson equations ...
Dědič, V   +6 more
core   +1 more source

Modeling and Verification of 1/f Noise Mechanisms in FAPbBr3 Single‐Crystal X‐Ray Detectors

open access: yesAdvanced Electronic Materials, EarlyView.
We demonstratethat surface‐trap‐induced carrier number fluctuations are the dominantmechanism in FAPbBr3 Schottky devices, a conclusion supported by thedistinct defect profiles revealed by Drive‐Level Capacitance Profiling (DLCP). Throughnoise contribution decomposition, it is found that the 1/f noise of thedetector is the key noise source affecting ...
Zhongyu Yang   +6 more
wiley   +1 more source

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