Polymer aggregation correlated transition from Schottky-junction to bulk heterojunction organic solar cells" (2014).

Transition-metal dichalcogenide layered materials, consisting of a transition-metal atomic layer sandwiched by two chalcogen atomic layers, have been attracting considerable attention because of their desirable physical properties for semiconductor devices, and a wide variety of pn junctions, which are essential building blocks for electronic and optoelectronic devices, have been realized using...

Heterojunction engineering of complex metal oxides is an active area research that addresses fundamental questions in solid-state systems with broad technological applications. In this work, α-Ag2WO4/Ag3PO4 heterojunctions different amounts α-Ag2WO4 (12, 24, and 36 wt%) were synthesized by the coprecipitation method characterized X-ray diffraction, photoelectron spectroscopy, field emission sca...

We report the first successful application of an ordered bicontinuous gyroid semiconducting network in a hybrid bulk heterojunction solar cell. The freestanding gyroid network is fabricated by electrochemical deposition into the 10 nm wide voided channels of a self-assembled, selectively degradable block copolymer film. The highly ordered pore structure is ideal for uniform infiltration of an o...

Metal corrugated surfaces have the potential of enhancing optical absorption through surface plasmon (SP) excitation facilitated by light-metal interactions. The successful utilization of metal corrugation induced optical absorption can improve the response of free carrier absorption (FCA), based HEterojunction Interfacial Workfunction Internal Photoemission (HEIWIP) detectors. This article rep...

Study and analysis of a proposed high-voltage high current switching n-p-n silicon germanium single-heterojunction bipolar transistor (SHBT) is performed using 2D MEDICI device simulator. A theoretical formulation is provided to substantiate the simulation results obtained regarding quasi-saturation phenomenon in bipolar transistors. Comparison with the conventional high-voltage current switchi...

We demonstrate that high-injection barrier effects associated with the collector-base silicon-germanium (SiGe) to silicon (Si) heterojunction are an important design constraint for SiGe heterojunction bipolar transistors (HBTs) operating at cryogenic temperatures. Due to its thermally activated nature, these barrier effects can have important dc and ac consequences at cryogenic temperatures eve...

Magnetic tunnel junction (MTJ) based on van der Waals (vdW) magnetic layers has been found to present excellent tunneling magnetoresistance (TMR) property, which great potential applications in field sensing, nonvolatile random access memories, and spin logics. Although MTJs composed of multilayer vdW homojunction have extensively investigated, the ones heterojunction are still be explored. Her...

Multi-field coupling, especially photo-assisted electrocatalysis, has recently been studied to further improve the oxygen evolution reaction (OER). In this study, an n-type cubic In2O3 semiconductor is employed for first time load IrOx species (Ir-In2O3 mass ratio: 17.6 %). Consequently, IrOx@In2O3 heterojunction, which exhibits outstanding OER performance promoted by weak-light irradiation, fo...

Constructing MOF-on-MOF heterojunction with elaborate charge transfer mechanism and interface is a promising strategy for improving the photocatalytic properties of MOFs. Herein, Step-scheme (S-scheme) MIL-125-NH2@CoFe Prussian blue analogue (PBA) reported first time. The heterostructure exhibits sandwich-like morphology hollow CoFe PBA nanocages selectively assembled on top-down surfaces MIL-1...