This paper gives an overview of the materials and methods used for fabricating photovoltaic solar cell devices. The technologies discussed include those based on the use of silicon (in the crystalline, multicrystalline, amorphous and micro-crystalline forms), the IIIeV compounds (e.g. gallium arsenide, indium phosphide and gallium antimonide), the polycrystalline compounds (e.g. cadmium telluri...

Articles you may be interested in Asymmetrical degradation behaviors in amorphous InGaZnO thin-film transistors under various gate and drain bias stresses Investigation on the negative bias illumination stress-induced instability of amorphous indium-tin-zinc-oxide thin film transistors Appl. Temperature dependence of negative bias under illumination stress and recovery in amorphous indium galli...

The intensity of gallium-67 scintiscans, lymphocyte counts in bronchoalveolar lavage fluid, and pathologic changes were studied in 26 patients with untreated pulmonary sarcoidosis. Noncaseating granulomas were recognized with significantly greater frequency in stage 2 (80 percent; 8/10 cases) than in stage 1 (43 percent; 6/14 cases). Alveolitis showed little relation to the roentgenographic sta...

Single-site gallium centers on the surface of silica are prepared via grafting of [Ga(OSi(OtBu)3)3(THF)] on SiO2-700 followed by a thermolysis step. The resulting surface species corresponds to well-defined tetra-coordinate gallium single-sites, [( 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 00000000...

Pseudomonas aeruginosa and Streptococcus pyogenes are leading causes of medical device-associated infections. The capacity to establish and maintain these infections is thought to be associated with the ability to form surface-attached biofilms. In the present study, gallium nitrate was used to coat PVC plates and biofilm formation on the plates by Pseudomonas aeruginosa and Streptococcus pyoge...

Di-2-pyridyl ketone 2-furoylhydrazone (DPFH) has been examined as a sensitive spectrofluorimetric reagent for the determination of gallium. 4 rapid procedure for the fluorimetric determination of th i s ion at the 2-800 ng ml-1 level at pH 3.S4.1 (Aex 395 nm, he, 473 nm) has been established. The detection limit is 2 ng ml-1 and the relative standard deviation is 2.4% (40 p.p.b. of gallium). In...

The geometrically frustrated triangular antiferromagnet Gadolinium Gallium Garnet (Gd3Ga5O12 or GGG) exhibits a rich mix of short-range order and isolated quantum states. We investigate the effects of up to 1% neodymium substitution for gallium on the ac magnetic response at temperatures below 1 K in both the linear and nonlinear regimes. Substitutional disorder actually drives the system towar...

A novel multicollision induced dissociation scheme is employed to determine the energy content for mass-selected gallium cluster ions as a function of their temperature. Measurements were performed for Ga(+)(n) (n=17 39, and 40) over a 90-720 K temperature range. For Ga+39 and Ga+40 a broad maximum in the heat capacity-a signature of a melting transition for a small cluster-occurs at around 550...

Gallium(I) tetrachlorogallate(III) Ga[GaCU] was prepared in quantitative yield by thermal de­ composition of dichlorogallane [HGaChk, which is readily available from EtsSiH and [GaCl3]2. The reaction of catechol with solutions of this gallium(I) tetrachlorogallate(III) in tetrahydro­ furan leads to the evolution of hydrogen gas and affords a dinuclear gallium(III) complex with penta-coordinate ...

Gallium is presently used in the diagnosis of inflammatory, granulomatous, and neoplastic lung disease despite its many logistical problems. In contrast, thallium-201 scintigraphy, which was initially developed for myocardial imaging, offers the principal advantage of immediate imaging and diagnosis although it had not been investigated previously for use in pulmonary disease. In this study, th...