Antiambipolar, ambipolar, and unipolar charge transport in organic transistors based on a single vertical P–N heterointerface

Abstract

The charge-transport modes of organic heterojunction transistors (OHJTs) (unipolar, antiambipolar, and ambipolar) are of great importance that determine their multiple applied scenarios. Here, we demonstrate OHJTs with tunable charge-transport modes...

Solvothermal Treatment of Visible‐Light‐Responsive TiO2 toward Enhanced Photocatalytic Degradation Activity of Tetracycline

“…Meanwhile, the pore size and pore volume of the treated TiO 2 samples are also significantly improved compared to the original TiO 2 . Generally speaking, a larger contact area and more active sites for the interaction between TC and catalyst can be provided by the larger S BET of the catalyst [24,25] . Therefore, the S BET of TiO 2 increased significantly after the solvothermal treatment, which was conducive to the photocatalytic reaction.…”

Multi‐Mode Vibrational Triboelectric Nanogenerator for Broadband Energy Harvesting and Utilization in Smart Transmission Lines

“…The emergence of triboelectric nanogenerator (TENG) based on triboelectric and electrostatic induction effects has revolutionized the way of environmental energy harvesting and utilization. Since the invention by Wang's group in 2012, [12] TENG technology has been widely used in micro-nano energy harvesting, [13][14][15] self-powered sensing [16][17][18] and other fields. Capitalizing on Maxwell's displacement current, the TENG can convert various forms of mechanical energy in the surrounding environment into electrical energy, including wind energy, [19][20][21] water energy, [22,23] and vibration energy.…”

Boosting the Charge Density of Triboelectric Nanogenerator by Suppressing Air Breakdown and Dielectric Charge Leakage

“…According to the paths of the electrostatic charges dissipating, charge decay usually includes air breakdown and dielectric charge leakage. [25] For air breakdown, it has been long recognized as the most common factor limiting the maximum output of TENG. [26][27][28] In order to break the limitation of the air breakdown, regulating the atmospheric conditions for TENG is focused on, and the output charge density is enhanced to ≈600 μC m −2 by pumping air into a vacuum.…”

“…Besides, the utilization of ultra-thin materials or the introduction of high-k fillers usually leads to a significant increase in dielectric charge leakage from the electrical point of view, [35,36] which has become another important impact in the HCD-TENG. [25] Accordingly, methods of trapping interfacial charges to minimize the negative impacts of charge leakage, such as using molybdenum disulfide (MoS 2 ), [37] composition material of MoS 2 and incorporated laser-induced graphene, [38] reduced graphene oxide and silver (Ag) nanoparticles hybrid layer, [39] etc., are adopted, and the peak power can be enhanced for dozen times. In the following research, it's essential to investigate whether the dielectric charge leakage will limit the maximum output of TENG before air breakdown.…”