Avalanche photodiodes (APDs) have drawn huge interest in recent years and have been
extensively used in a range of fields including the most important one—optical …

Avalanche or carrier-multiplication effect, based on impact ionization processes in
semiconductors, has a great potential for enhancing the performance of photodetector and …

We engineered a two-dimensional Pt/WSe2/Ni avalanche photodetector (APD) optimized for
ultraweak signal detection at room temperature. By fine-tuning the work functions, we …

Frequency upconversion photodetection by two‐dimensional (2D) materials with nonlinear
optical response is an appealing technique for applications such as extending …

Visual adaptive devices have potential to simplify circuits and algorithms in machine vision
systems to adapt and perceive images with varying brightness levels, which is however …

Due to the unique combination configuration and the formation of a built-in electric field,
mixed-dimensional heterojunctions present fruitful possibilities for improving the …

Optical logic operation is promising for ultrafast information processing and optical
computing due to the high computation speed and low power consumption. However …

Two-dimensional (2D) materials have attracted great attention in the past few years and offer
new opportunities for the development of high-performance and multifunctional bipolar …

An efficient nonlinear photodetector (NLPD) is demonstrated with quadratic response based
on a few‐layer InSe p–n homojunction, which is beneficial from the strong second harmonic …

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) have been extensively
investigated in photodetection due to their excellent optical and electrical properties. For …