Charged transport processes

Tyagai VA, Kolbasov GY (1971) The contribution of surface states to the charge transport process across CdS, CdSe-electrolyte interface. Surf Sci 28 423 36... 

II. VOLTAMMETRIC ELUCIDATION OF THE CHARGE TRANSPORT PROCESS THROUGH A LIQUID MEMBRANE OR A BILAYER LIPID MEMBRANE IN THE PRESENCE OF SUFFICIENT ELECTROLYTES [10,17,18]... 

Scheme 2 Schematic representation of the charge separation and charge transport processes in the hairpin 3GAGG. Shading indicates excited state or radical ion species...

As aforementioned, the introduction of carbon nanomaterials is an effective strategy to take on some of the contemporary challenges in the field of DSSCs. In particular, enhanced charge injection and charge transport processes in carbon nanomaterial-doped electrodes, efficient carbon nanomaterial-based, iodine-free, quasi-solid state electrolytes, and the use of novel nanographene hybrids as dyes are some of the most stunning milestones. All of these milestones are considered as solid proof for the excellent prospect of carbon nanomaterials in DSSCs. The major goal of this chapter is to... 

Tyagai, VA and Kolbasov, GY, The Contribution of Surface States to the Charge Transport Process Across CdS, CdSe-Electrolyte Interface, Surface Science, 28, 423, 1971. 

The good EL performance of these devices results from the combination of the emission properties of the main chain (blue side) and the Ir(III) units (red side) and from modulation of the charge transport process by the incorporated carbazole units. These features are associated to a homogeneous single-layer material, which represents an advantage against using blends and multilayer structures that can be subject to phase separation. 

Lewis FD (2001) Electron transfer and charge transport processes. In Balzani V (ed) Electron transfer in chemistry, vol III, Chap. 1.5. Wiley, Weinheim, p 105... 

For investigating the nature of the charge-transport process, thermodynamic studies are particularly useful. In these studies, the charge transport rate, Dct, is measured over a range of temperatures. Its temperature-dependence can be described by using the Arrhenius equation, as follows ... 

Solid-state electrochemistry — is traditionally seen as that branch of electrochemistry which concerns (a) the -> charge transport processes in -> solid electrolytes, and (b) the electrode processes in - insertion electrodes (see also -> insertion electrochemistry). More recently, also any other electrochemical reactions of solid compounds and materials are considered as part of solid state electrochemistry. Solid-state electrochemical systems are of great importance in many fields of science and technology including -> batteries, - fuel cells, - electrocatalysis, -> photoelectrochemistry, - sensors, and - corrosion. There are many different experimental approaches and types of applicable compounds. In general, solid-state electrochemical studies can be performed on thin solid films (- surface-modified electrodes), microparticles (-> voltammetry of immobilized microparticles), and even with millimeter-size bulk materials immobilized on electrode surfaces or investigated with use of ultramicroelectrodes. The actual measurements can be performed with liquid or solid electrolytes. 

In all charge transport processes, several factors govern overall efficiency [25]. First, the generation of free carriers within the CGL is field dependent. Second, at the interface of the CGL and CTL, injection processes can be rate limiting. Finally, the mobility of the carriers in the CTL can be limiting. These factors are balanced delicately in functional electrophotographic systems to optimize performance-response characteristics. A full discussion is beyond the scope of the present chapter. 

The optoelectronic properties of conjugated polymers containing the rhenium diimine unit [Re(CO)3(phen)Cl] have been studied. Charge-carrier mobility measurements showed that the presence of metal complexes could facilitate the charge-transport process, and the enhancement in carrier mobility was dependent on the metal content in the polymer. The use of transition metal complexes for both photovoltaic and electroluminescence applications was demonstrated. 

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