Abstract Low-temperature-processed semiconductors are an emerging need for next-generation scalable electronics, and these to feature large-area fabrication, solution processability, high electrical performance, wide spectral optical absorption properties. Although various strategies of low-temperature-processed n-type have been achieved, the development high-performance p-type at low temperatu...

Integrating photoactive proteins with synthetic nanomaterials holds great promise in developing optoelectronic devices whereby light, captured by a antenna protein, is converted to modulated electrical response. The protein–nanomaterial interface critical defining properties; successful integration of bionanohybrids requires control over protein attachment site and detailed understanding its im...

Retinal-inspired synaptic phototransistors, which integrate light signal detection, preprocessing, and memory functions, show promising applications in artificial vision sensors. In recent years, it has been reported to construct heterojunction phototransistors realize positive photoconductance (PPC) negative (NPC) modulations, thereby achieving visible infrared wavelength discrimination variou...

Since the successful preparation of monolayer MoS2 phototransistor, two-dimensional (2D) layered materials (2DLMs) have been regarded as one most compelling candidates toward implementation next generation novel optoelectronic devices and systems. However, reported 2DLM photodetectors suffer from specific shortcomings, such low responsivity, large dark current, detectivity, on/off ratio, sluggi...

In this study, the authors fabricate Sn-doped 100-nm thick polycrystalline β-Ga2O3 synaptic field-effect transistors (FETs) emulating optical and electrical spike stimulation. When stimulated by deep ultraviolet (UV) spikes or electric voltage at gate, devices exhibit several essential functions of excitatory-postsynaptic currents (EPSCs), inhibitory-postsynaptic (IPSCs), paired-pulse facilitat...

Abstract Next-generation optoelectronics should possess lightweight and flexible characteristics, thus conforming to various types of surfaces or human skins for portable wearable applications. Flexible photodetectors as fundamental devices have been receiving increasing attention owing their potential applications in artificial intelligence, aerospace industry, wise information technology 120,...

In this study, we describe a technique for estimating meal times using an earphone-type wearable sensor. A small optical sensor composed of a light-emitting diode and phototransistor is inserted into the ear hole of a user and estimates the meal times of the user from the time variations in the amount of light received. This is achieved by emitting light toward the inside of the ear canal and r...

A new sensitive infrared life-detection system which can be used to locate and obtain valuable information regarding human subjects which are buried under earthquake rubble has been developed. This system can detect the distance at which the human subject is detected and the heartbeat signals of the person under the earthquake rubble can be measured. In this system, an infrared sensor comprisin...

Despite the unique properties of black phosphorus (BP) and phosphorene, including high carrier mobility and in-plane anisotropy, their stability has been hampered by significant crystal deterioration upon exposure to oxygen and water. Herein, we investigate the chemical stability of MoS2-passivated black phosphorus (BP) or bilayer (2L) phosphorene van der Waals (vdW) heterostructures using the ...