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Explanation of potential-induced degradation of the shunting type by Na decoration of stacking faults in Si solar cells
Crystalline Si solar cells that exhibit potential-induced degradation of the shunting type (PID-s) are investigated on a microstructural level. Cell pieces with PID-shunts are imaged by SEM using theExpand
Synthesis and properties of filled carbon nanotubes
Abstract Single- and multi-walled carbon nanotubes are very interesting nanoscaled materials with many possible applications in nanoelectronics. Especially, nanotubes filled with ferromagneticExpand
Potential-Induced Degradation (PID): Introduction of a Novel Test Approach and Explanation of Increased Depletion Region Recombination
In recent years, a detrimental degradation mechanism of solar cells in large photovoltaic fields called potential-induced degradation (PID) has been intensively investigated and discussed. Here, theExpand
Hydrogen storage in different carbon nanostructures
Carbon nanostructures of different kinds have been synthesized by chemical vapor deposition. By modifying the deposition temperature, the catalyst material, and the hydrocarbon, nanofibers withExpand
The role of stacking faults for the formation of shunts during potential-induced degradation of crystalline Si solar cells
Mono- and multicrystalline solar cells have been stressed by potential-induced degradation (PID). Cell pieces with PID-shunts are imaged by SEM using the EBIC technique in plan view as well as afterExpand
Reduced diameter distribution of single-wall carbon nanotubes by selective oxidation
We report an easy way to narrow the diameter distribution of single-walled carbon nanotubes (SWNT) by oxidization treatments. Both a chemical treatment in 2 M HNO3 as well as oxidation in a reducedExpand
Solid–liquid–solid growth mechanism of single-wall carbon nanotubes
Abstract Reasons are presented which suggest that the liquefaction of the catalytic particles is a decisive condition for formation of single wall carbon nanotubes (SWNTs) by physical synthesisExpand
Well-aligned Co-filled carbon nanotubes: preparation and magnetic properties
Carpet-like flakes (area < 9 mm 2 ; thickness < 50 μm) of well-aligned Co-filled multi-walled carbon nanotubes were grown by decomposition of cobaltocene. The nanotubes have outer diameters of 50-90Expand
Sodium Outdiffusion from Stacking Faults as Root Cause for the Recovery Process of Potential-induced Degradation (PID)
Abstract Potential-induced degradation (PID) is currently one of the most important and prominent module degradation mechanisms leading to significant yield losses. It was shown that Na decoratedExpand
Synthesis and electronic properties of B-doped single wall carbon nanotubes
We analyse the doping dependence of boron substituted single wall carbon nanotubes at high boron content. A specially designed substitution process was used to produce nanotubes with about 15 and 10Expand