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In this paper, the effects of the thickness of the multiplication region (Tm), the sheet charge density of the charge control layer (Dc) and the guard ring design to a separate absorption, grading, charge, and multiplication InGaAs/InP single photon avalanche diode (SPAD)'s performance are numerically discussed. Optimized Tm and Dc are designed for a SPAD. Implanted guard ring is revealed to be easier...
We present a study of quantum confined electroabsorption and carrier dynamics in polar c-plane and nonpolar a-plane InGaN/GaN quantum heterostructures. We demonstrate red-shifting absorption edge, due to quantum confined Stark effect, in nonpolar InGaN/GaN quantum structures in response to increased electric field, while we show the opposite effect with blue-shifting absorption spectra in polar quantum...
Field-dependent photo-current measurements in Quantum Rod systems show that the orientation of the permanent dipole moment of a standard GaAs/InAs quantum dot can be reversed by fabricating high-aspect ratio Quantum Rod systems.
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