Phototronics: Enhanced Broad Band Photodetection through Piezo‐Phototronic Effect in CdSe/ZnTe Core/Shell Nanowire Array (Adv. Electron. Mater. 4/2015)

Abstract

W. Zhou and co‐workers demonstrate a prototype piezo‐phototronic photodetector integrated on 3D CdSe/ZnTe core/shell nanowire array. As they discuss in article number 1400050, the broad band photo‐detection can be achieved with two orders of magnitude change in the absolute current along with four orders of magnitude change in responsivity, which demonstrates the enhanced piezo‐phototronic effect in a group II–VI heterojunction.

Piezocatalysis and Piezo‐Photocatalysis: Catalysts Classification and Modification Strategy, Reaction Mechanism, and Practical Application

“…Due to the band bending caused by piezo‐potential, piezocatalysts and piezo‐photocatalysts can be well applied in redox reactions without further modification. [ 174 ] The formation of various ROS ( • O 2 − , • OH, H 2 O 2 and peroxymonosulfate) during piezocatalytic process of BaTiO 3 could be applicable for degradation of intricate organic contaminations, like the dechlorination of 4‐chlorophenol [ 17 ] or benzothiazole. [ 175 ] The quantification of ROS under different O 2 concentrations during the catalytic process confirmed the oxygen activation‐determined degradation.…”

Piezo‐Phototronic Effect Controlled Dual‐Channel Visible light Communication (PVLC) Using InGaN/GaN Multiquantum Well Nanopillars

“…At this time, the electron wavefunction and hole wavefunction are effectively overlapped to result in a high emission efficiency. Under compressive force, the conduction band and valence band are both tilted by the additional piezopotential, as shown in Figure e. As a result, the overlap of electron wavefunction and hole wavefunction in QWs is reduced and emission intensity is decreased .…”

“…With potentials for sensing, manipulating, and actuating/responding, piezo‐phototronic effect is expected to have important applications in sensors, bio‐integrated systems, human–machine interfacing, MEMS, energy, and integration with silicon‐based CMOS technology. Based on ZnO nanowires (NWs), CdS NWs and InGaN/GaN MQWs nanopillars, a series of novel nano/microdevices have been developed/improved, such as piezo‐phototronic nanogenerators, piezo‐phototronic solar cell, piezo‐phototronic logic devices, piezo‐phototronic photodetectors, and piezo‐phototronic light emitting diodes …”

Graphene Quantum Dots – Hydrothermal Green Synthesis, Material Characterization and Prospects for Cervical Cancer Diagnosis Applications: A Review

“…These nanoparticles confer wide Eg and increased fluorescence characteristics. [27,28] However, these QDs are insoluble in water, suffer from aggregation in aqueous systems, and are toxic, thereby disrupting cellular homeostasis. [29] Organic coatings, of hydrophilic polymers and others impart efficient dispersibility in water.…”

“…Inorganic surface coatings facilitate the synthesis of core/shell QDs. These nanoparticles confer wide Eg and increased fluorescence characteristics [27,28] . However, these QDs are insoluble in water, suffer from aggregation in aqueous systems, and are toxic, thereby disrupting cellular homeostasis [29] .…”