Recombination within the bulk and at the surfaces of crystalline silicon has been investigated in this thesis. Special attention has been paid to the surface passivation achievable with plasma enhanced chemical vapour deposited (PECVD) silicon nitride (SiN) films due to their potential for widespread use in silicon solar cells. The passivation obtained with thermally grown silicon oxide (SiO2) ...

The paper presents results of research under the effect surface thermo-chemical treatment on cor-rosion resistance X6CrNiTi18-10 steel. corrosion layers stainless steel obtained as a result (boronizing process) was assessed using method progressive thinning, which consists in performing tests deeper and areas layer. This allowed for determination changes individual characteristic corro-sion par...

Cu(In,Ga)Se2 (CIGSe) solar cells are among the most efficient thin-film on lab scale. However, this technology has relatively large upscaling losses for commercial technology. To tackle this, paradigm shifts proposed that allow simpler, cost-effective, and CIGSe cells. Front passivation using dielectric layers is one of options being investigated as widely used in Si Research front an early sta...

Adsorbed proteins on walls of glass capillaries used for electrospray (ES) can desorb and potentially affect size distributions and, thus, quantification of aggregates of proteins. In this study we use differential mobility analysis (DMA) to investigate the size distribution of various proteins eluting from bare and passivated glass capillaries. We found no significant differences in aggregate ...

Stretching DNA in nanochannels is a useful tool for direct, visual studies of genomic DNA at the single molecule level. To facilitate the study of the interaction of linear DNA with proteins in nanochannels, we have implemented a highly effective passivation scheme based on lipid bilayers. We demonstrate virtually complete long-term passivation of nanochannel surfaces to a range of relevant rea...

Using the first-principles methods we compute the electronic structure and the absorption spectra for a wurtzite CdSe (0001) slab covered with zincblende ZnSe and ZnS epilayers. For each structure we compute the DOS and the imaginary part of the dielectric function. We find that the semiconductor passivation shifts the ‘near Fermi-level’ states of the bare CdSe slab down to lower energy levels....

The formation of passivation films by interfacial reactions, though critical for applications ranging from advanced alloys to electrochemical energy storage, is often poorly understood. In this work, we explore the an exemplar film, solid–electrolyte interphase (SEI), which responsible stabilizing lithium-ion batteries. Using stochastic simulations based on quantum chemical calculations and dat...

Epitaxial growth of a highly strained, coherent SiGe alloy shell around a Ge nanowire core is investigated as a method to achieve surface passivation and carrier confinement, important in realizing nanowire devices. The high photoluminescence intensity observed from the core-shell nanowires with spectral features similar to that of bulk Ge indicates effective surface passivation. Thermal stabil...

In the present study, the effects of growth defects and chromium content loss on the degradation of corrosion and passivation of cathodic arc evaporation (CAE-PVD) of stainless steel coating were investigated in 2 M sulphuric acid solution. EDS analysis indicated that the micro-particles were obtained during the coating growth. In addition, it was detected that the growth defects had poor adhes...

Chemical passivation of defective perovskite surface is a fundamental strategy to stabilize solar cell operation by impeding the defect-dominant ion migration. Here, we show that configuration organic cations plays key role in determining their adsorption energetics at various facets, which will strongly impact spatial uniformity low-dimensional layer (LDPL). A weak-anisotropic behavior demonst...