110 research outputs found
Large-area thin-film modules
The low cost potential of thin film solar cells can only be fully realized if large area modules can be made economically with good production yields. This paper deals with two of the critical challenges. A scheme is presented which allows the simple, economical realization of the long recognized, preferred module structure of monolithic integration. Another scheme reduces the impact of shorting defects and, as a result, increases the production yields. Analytical results demonstrating the utilization and advantages of such schemes are discussed
Tetrathiotetracene thin film morphology and electrical properties
The electrical properties of organic thin films are determined by their chemical constituents and the morphology of the films deposited. In this paper the morphology of vacuum sublimed (7∙10-6 mbar) tetrathiotetracene (TTT) thin films is shown to be strongly affected by the thermal deposition temperature (222-350 K) and rate of deposition. Mostly needle-like morphologies are identified by scanning electron microscopy. Optimal TTT purity (a pre-requisite for device preparation via subsequent oxidation) is evidenced by their initially low electrical conductivity. Altering the TTT morphology, by variation of the evaporation parameters, strongly affects this base electrical conductivity. Four probe conductivity measurements and charge extraction by linear increasing voltage methods are used to characterize film electrical properties. In-plane conductivity of up to 7.03∙10-5 S/cm is achieved for pure TTT thin films. Subsequent aerial oxidation resulted in a 3.4-fold increase in electrical conductivity
In silico transcriptional regulation and functional analysis of dengue shock syndrome associated SNPs in PLCE1 and MICB genes
YesSingle nucleotide polymorphisms (SNPs) in PLCE1
and MICB genes increase risk for the development of dengue
shock syndrome (DSS). We used Bioinformatics tools to predict
alterations at the transcriptional and posttranslational levels
driven by PLCE1 and MICB SNPs associated with DSS.
Functional and phenotypic analysis conducted to determine
deleterious SNPs and impact of amino acid substitution on
the structure and function of proteins identified rs2274223
(H1619R) as deleterious to protein coding as it induces structural
change in the C2 domain of PLCε, with the mutant residue
more positively charged than the wild-type residue (RMSD
score, 1.75 Ã…).Moreover, rs2274223 condenses the chromatinrepressing
PLCε expression in DSS. Briefly, this study presents
the impact of a single nucleotide transition at SNPs associated
with DSS on differential protein binding patterns with PLCE1
and MICB genes and on protein structure modification and their
possible role in the pathogenesis of DSS
Compressional sound velocity, equation of state, and constitutive response of shock-compressed magnesium oxide
Equations of state and crystal structures of high-pressure phases of shocked silicates and oxides
Thermal equation of state of ruthenium characterized by resistively heated diamond anvil cell
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