LP-CVD ZnO has been developed at IMT as front TCO for amorphous silicon p-i-n single-junction and “micromorph” (microcrystalline/amorphous silicon) tandem solar cells. In comparison with SnO2 (Asahi type U), ZnO demonstrates superior light-trapping behaviour. Applying the monolithic series connection by laser-scribing, both for amorphous single-junction and micromorph tandem cells, modules have...

LP-CVD ZnO has been developed at IMT as front TCO for a-Si:H p-i-n single-junction and “micromorph” (microcrystalline/amorphous silicon) tandem solar cells. An amorphous silicon single-junction p-i-n cell (~1 cm) with a stabilized efficiency of 9.47 % has independently been confirmed by NREL. Applying the monolithic series connection by laser-scribing, both for amorphous single-junction and mic...

Hydrogenated amorphous silicon-germanium (aSiGe:H) films and n-i-p solar cells near the threshold of microcrystalline formation have been prepared by plasma enhanced chemical vapor deposition (PECVD) with a fixed germane to disilane ratio of 0.72 and a wide range of hydrogen dilution RH=(H2 flow)/(GeH4+Si2H6 flow) values of 1.7, 10, 30, 50, 120, 180 and 240. The effects of RH on the structural ...

Thin films of were prepared by casting and its tensile properties like tensile strength (TS) and elongation at break (Eb%) were studied. The gelatin films were procured with two types of monomers such as 5% ethylene glycol (EG) and 5% ethylene glycol dimethacrylate (EGDMA) to increase the tensile properties. Five percent of monomer solutions were prepared in MeOH along with 2% photoinitiator; I...

Long-term light-soaking experiments of amorphous silicon photovoltaic modules have now established that stabilization of the degradation occurs at levels that depend significantly on the operating conditions, as well as on the operating history of the modules. We suggest that stabilization occurs because of the introduction of degradation mechanisms with different time constants and annealing a...

Advances in DNA sequencing technologies have led to the rapid accumulation of gene sequence data with whole genome sequences in draft form available for a number of important helminth parasites of animals andplants.There is an urgent requirement to establish reverse genetics tools to define the function of individual genes to enhance our knowledge of parasitism and to identify key parasite gene...

glycine betaine (gb) is one of the osmotic plant-protecting members that accumulate in response to abiotic stresses. an experiment was, therefore, conducted to test whether gb application at various concentrations (0, 10, 20 and 30 mm) through seed soaking or foliar spray methods would protect cucumber seedlings, subjected to chilling stress. at two true leave stages, after gb treatment, the se...

Light soaking under “1 sun” is performed on planar p–i–n perovskite solar cells with a Cs0.05MA0.10FA0.85Pb(I0.95Br0.05)3 absorber while measuring current and voltage transients simultaneously to spectral photoluminescence (PL). From theory tenfold increase in PL intensity expected for every 60 mV rise VOC (at 300 K). However, the investigated show reversible from as low 0.5 up 1.05 V during li...