Related Experiment Video
Updated: Feb 5, 2026

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
Published on: December 23, 2016
Stable and Reversible Triphenylphosphine-Based n-Type Doping Technique for Molybdenum Disulfide (MoS
Abstract:
A highly stable and reversible n-type doping technique for molybdenum disulfide (MoS2) transistors and photodetectors is developed in this study. This doping technique is based on triphenylphosphine (PPh3) and significantly improves the performance of MoS2 transistor and photodetector devices in terms of the on/off-current ratio (8.72 × 104 → 8.70 × 105), mobility (12.1 → 241 cm2/V·s), and photoresponsivity ( R) (2.77 × 103 → 3.92 × 105 A/W). The range of doping concentrations is broadly distributed between 1.56 × 1011 and 9.75 × 1012 cm-2 and is easily controlled by adjusting the temperature at which the PPh3 layer is formed. In addition, this doping technique provides two interesting properties that have not been reported for previous molecular doping techniques: (i) high stability leading to small variations in device performance after exposure to air for 14 days (on-current: 1.34% and photoresponsivity: 1.58%) and (ii) reversibility enabling the repetitive formation and removal of PPh3 molecules (doping and dedoping).
Related Concept Videos
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
Types of Chemical Reactions: Exchange and Reversible
A special kind of exchange reaction is the oxidation-reduction reaction, or the redox reaction. These reactions involve the transfer of electrons from one compound to another. The electrons in these reactions commonly come from hydrogen atoms, which consist of an electron and a proton. A molecule gives up a...
Hückel's Rule Diagram of π MOs: Frost Circle
A Frost circle is constructed by drawing a polygon whose number of edges is equal to the number of carbons of the given cyclic system, with one of the vertices pointing down. Then, a circle is drawn enclosing the polygon so that...
Classification of Titrimetric Analysis Based on Reaction Types
Titrations between an acid and a base lead to neutralization reactions that form...
Reversible and Irreversible Processes
Diode: Reverse bias

