We report on characterization of a set of AlGaN/GaN multiple-quantum-well (MQW) photodetectors. The model structure used in the calculation is the p–i–n heterojunction with 20 AlGaN/GaN MQW structures in i-region. The MQW structures have 2nm GaN quantum well width and 15nm AlxGa1 xN barrier width. The cutoff wavelength of the MQW photodetectors can be tuned by adjusting the well width and barri...

Typical Field Programmable Gate Arrays (FPGAs) are generally used in signal processing, image processing and rapid prototyping applications. The integration of Silicon Germanium (SiGe) Heterojunction Bipolar Transistor (HBT) devices with CMOS allows a new family of FPGAs to be created. This paper elaborates new ideas in designing high-speed SiGe BiCMOS FPGAs based on the Xilinx 6200. The paper ...

This work explores homo- and heterojunction tunnel field-effect transistor (TFET)-based NAND NOR logic circuits using 30 nm technology compares their performance in terms of power consumption propagation delay. By implementing homojunction TFET-based circuits, it has been observed that consumes less than the gate since current drawn by PTFET pull-up network is higher. The delay lower due to its...

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Articles you may be interested in Optimized amorphous silicon oxide buffer layers for silicon heterojunction solar cells with microcrystalline silicon oxide contact layers Enhancing the efficiency of SnS solar cells via band-offset engineering with a zinc oxysulfide buffer layer Appl. Analysis of sub-stoichiometric hydrogenated silicon oxide films for surface passivation of crystalline silicon ...

Hybrid organic/inorganic perovskites (e.g., CH3NH3PbI3) as light absorbers are promising players in the field of third-generation photovoltaics. Here we demonstrate a low-temperature vapor-assisted solution process to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale. Solar cells based on the as-prepared films ac...

Regioregular conjugated polymers containing alternating pyridyl[2,1,3]thiadiazole (PT) and indacenodithiophene (IDT) structural units were synthesized. In these copolymers, the pyridyl nitrogen atoms on PT are precisely arranged along the backbone so that each one has an adjacent proximal and an adjacent distal counterpart across the two IDT flanking units. We find that despite the absence of o...

The electronic conduction of a novel, three-terminal molecular architecture, analogous to a heterojunction bipolar transistor, is studied. In this architecture, two diode arms consisting of donor-acceptor molecular wires fuse through a ring, while a gate modulating wire is a pi-conjugated wire. The calculated results show the enhancement or depletion mode of a transistor on applying a gate fiel...