We have performed real-time excited state simulations of electron injection and charge recombination at a dye/semiconductor interface within the framework of time-dependent density functional theory (TDDFT). We found that by inserting a phenyl ring into the organic dye, the charge recombination rate is slowed down by about four times, while the injection rate keeps almost the same. This introdu...

An amorphous carbon film formed by a pyrolysis photoresist as the bottom contact source/drain electrode of OFETs to improve charge injection well device performance.

The space charge distribution in low-density polyethylene (LDPE) was measured with the pulsed electroacoustic (PEA) method. We used three types of LDPE: LDPE-L and LDPE-H were prepared by the high pressure process, and m-LDPE was polymerized with a metallocene catalyst. Space charge in LDPE strongly depended upon the electrode material. Semiconductive electrodes enhanced carrier injection into ...

We proposed a new measurement technique to investigate oxide charge trapping and detrapping in a hot carrier stressed n-MOSFET by measuring a GIDL current transient. This measurement technique is based on the concept that in a MOSFET the Si surface field and thus GIDL current vary with oxide trapped charge. By monitoring the temporal evolution of GIDL current, the oxide charge trapping/detrappi...

Charge injection transistors have been implemented in molecular-beam-epitaxy-grown InGaAs/InALAs/InGaAs and InGaAs/InPDnGaAs heterosuuctures using a selfaligned process for the collector stripe definition. Scattering parameters have been measmd in the frequency range from 100 MHz to 40 GHz. InP-banier devices show the best microwave performance ever reported for a real-space transfer transistor...

We have developed a new method for characterizing the electronic properties of organic thin films and interfaces for electronic device applications. In this scanning tunneling microscope (STM)-based technique, distance versus potential curves are collected at constant tunneling current. Here the STM feedback mechanism causes the tip to penetrate the organic material, allowing the injection barr...

ORBIT, Objective Ring Beam Injection and Tracking, is a new C++ code developed for the Spallation Neutron Source (SNS) project to build the most intense pulsed neutron source. The code includes H foil injection modelling features needed to simulate realistic injection scenarios. Because the SNS project will produce intense pulses, 1-2x10, of low energy protons, 1 GeV, and is concerned with keep...

We have revealed practical charge injection at metal and organic semiconductor interface in organic field effect transistor configurations. We have developed a facile interface structure that consisted of double-layer electrodes in order to investigate the efficiency through contact metal dependence. The metal interlayer with few nanometers thickness between electrode and organic semiconductor ...

Functional electrical stimulation with cuff electrodes involves the controlled injection of current into an electrically excitable tissue for sensory or motor rehabilitation. Some charge injected during stimulation is 'lost' at the electrode-electrolyte interface when the charge carrier is translated from an electron to an ion in the solution. The process of charge injection through chemical re...

Extended rigid tripodal sensitizers were used to investigate the rate of long-distance photoinduced charge transfer from the MLCT excited states of RuII-based chromophores into mesoporous TiO2 films. The distance between the RuII center and the surface of the semiconductor was 24 A. Rapid biexponential charge injection with a major subpicosecond component as fast as 240 fs was observed upon fem...