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Solar cells consisting of extremely uniform and ordered large-area arrays of silicon micropillars are fabricated using metal-assisted chemical etching. Micropillar diameter, pitch, height, and core-shell doping profiles are optimized for light trapping and carrier collection.
Thin film edge emitting lasers with top/bottom stripes are broad area metal/metal bonded to a Si substrate. The bonding and top/bottom stripes are steps forward toward better heat dissipation, current confinement, and mechanical bonding strength.
The nonlinear refractive index of Silicon nanocrystals was measured by the z-scan technique. The results were used to estimate the magnitude of the self-phase modulation (SPM) effect in slot waveguide structures filled by Silicon nanocrystals.
A systematic study of silicon nanocrystals (Si-ncs) nonlinearities at 1550 nm was carried out in view of the realization of an all optical Mach-Zehender interferometer (MZI).
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