Semiconductor solution-processed

Solution Processing of Chalcogenide Semiconductors via Dimensional Reduction... 

Figure 3.2. Film formation using a dimensional reduction approach involves three steps 1) breaking up the insoluble extended inorganic framework (a) into more soluble-isolated anionic species, which are separated by some small and volatile cationic species (b). 2) Solution-processing thin films of the precursor (b). 3) Heating the precursor films such that the cationic species and corresponding chalcogen anions are dissociated, leaving behind the targeted inorganic semiconductor (c).

Mitzi, D. B. 2004. Solution-processed inorganic semiconductors. J. Mater. Chem. 14 2355-2365. 

Potential chemical interactions across dissimilar solvent systems and the sensitivity of oxide semiconductors to redox conditions and surface adsorption combine to make integration of solution-processed dielectrics and semiconductors a nontrivial undertaking. By maintaining appropriate aqueous... 

The development of solution processing for semiconductor materials has mostly focused on organic semiconductors.3 5 Organic transistors can be... 

Colloidal semiconductor nanocrystals are attracting growing attention as the building blocks for inexpensive, large-area, solution-processed solar cells. The advantages here are the scalable and controlled synthesis, an ability to be processed in solution, the broadband absorption, and the superior transport properties of traditional photovoltaic semiconductors. Solar cells that rely exclusively on colloidal nanocrystals have been anticipated theoretically58 and... 

Prior to the 1970 s, electrochemical kinetic studies were largely directed towards faradaic reactions occurring at metal electrodes. While certain questions remain unanswered, a combination of theoretical and experimental studies has produced a relatively mature picture of electron transfer at the metal-solution interface f1-41. Recent interest in photoelectrochemical processes has extended the interest in electrochemical kinetics to semiconductor electrodes f5-151. Despite the pioneering work of Gerischer (11-141 and Memming (15), many aspects of electron transfer kinetics at the semiconductor-solution interface remain controversial or unexplained. 

Based on the discussion above, it seems evident that a detailed understanding of kinetic processes occurring at semiconductor electrodes requires the determination of the interfacial energetics. Electrostatic models are available that allow calculation of the spatial distributions of potential and charged species from interfacial capacitance vs. applied potential data (23.24). Like metal electrodes, these models can only be applied at ideal polarizable semiconductor-solution interfaces (25)- In accordance with the behavior of the mercury-solution interface, a set of criteria for ideal interfaces is f. The electrode surface is clean or can be readily renewed within the timescale of... 

Flat-Panel Displays Made with Solution-Processible Organic Semiconductors.25... 

FLAT-PANEL DISPLAYS MADE WITH SOLUTION-PROCESSIBLE ORGANIC SEMICONDUCTORS... 

Sakanoue T, Sirringhaus H (2010) Band-like temperature dependence of mobility in a solution-processed organic semiconductor. Nat Mater 9 736... 

Organic functionalization reactions have been carried out both in vacuum and in solution. The vacuum studies typically use the clean, reconstructed (100) or (111) crystal faces of the semiconductor, and the reactants are dosed in the gas phase. Because the semiconductor surfaces are readily oxidized and otherwise contaminated in air or solution, the usual approach for solution-based functionalization is to first passivate the semiconductor (e.g., with hydrogen or halogens) through solution processing, then carry out a reaction which replaces the passivating layer with the organic molecules. 

The n-p Junction. Before beginning a discussion of electron transfer at interfaces between H-type semiconductor/solution interlaces, it is helpful to describe something of the theory of the famous n-p junction. This is not a part of electrode-process chemistry (which deals with electron-transfer reactions between electronically and ionically conducting phases), but it is the basis of so much modem technology (e.g., the transistor in computers) that an elementary version of events at the junction should be understood. Further, knowing about the n-p junction makes it easier to understand electrochemical interfaces involving semiconductors. 

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