Performance Enhancement Of An Si Photodetector By Incorporating Photon-Trapping Surface Structures

A technical paper titled “Achieving higher photoabsorption than group III-V semiconductors in ultrafast thin silicon photodetectors with integrated photon-trapping surface structures” was published by researchers at University of California Davis, W&WSens Devices Inc., and University of California Santa Cruz. Abstract: "The photosensitivity of silicon is inherently very low in the vis... » read more

MIT: Stackable AI Chip With Lego-style Design

New technical paper titled "Reconfigurable heterogeneous integration using stackable chips with embedded artificial intelligence" from researchers at MIT, along with Harvard University, Tsinghua University, Zhejiang University, and others. Partial Abstract: "Here we report stackable hetero-integrated chips that use optoelectronic device arrays for chip-to-chip communication and neuromorphic... » read more

Metasurface Colloidal Quantum Dot Photodetectors

Abstract: "Efficient photodetectors that can be easily engineered for a specific spectral window are of high interest. Here, we report on the design, fabrication, and characterization of metasurface-enhanced photodetectors and photodiodes using colloidal quantum dots. We fabricate photoconductors optimized for the wavelength range around 1550 nm featuring responsivities of up to 8000 A/W wit... » read more

Power/Performance Bits: Dec. 30

Crafting ultrathin color coatings Harvard University researchers have developed a technique that coats a metallic object with an extremely thin layer of semiconductor, just a few nanometers thick. And while the semiconductor is a steely gray color, the object ends up shining in vibrant hues because the coating exploits interference effects in the thin films. Carefully tuned in the laboratory, ... » read more

Power/Performance Bits: Nov. 25

Better photodetectors Photodetectors are semiconductor devices that convert incoming light into electrical signals used in a vast array of products, from visible and infrared light detection systems to television remote controls. Meanwhile, perovskite is an organic-inorganic hybrid material with a crystal structure that is very efficient at converting light into electricity, and in recent year... » read more

Manufacturing Bits: Dec. 31

Bringing Graphene Down To Earth For years, the semiconductor industry has been looking at graphene as a next-generation technology for a multitude of applications. One potential application, the graphene field-effect transistor (GFET), has been developed by various companies and universities. There are several advantages and disadvantages with GFETs. On one hand, GFETs have a higher mobilit... » read more