Thin film semiconductor

Dimethylcadmium has found use as a volatile source of Cd for metal organic chemical vapor deposition (MOCVD) production of cadmium-containing semiconductor thin films (qv) such as CdS, Cdi 2 Hg -Te, or Cdi 2 Mn -Te, as multiple quantum weU species (32). Semiconductor-grade material seUs for... 

ORGANIC SEMICONDUCTOR THIN-FILM TRANSISTOR SENSORS... 

Three common uses of RBS analysis exist quantitative depth profiling, areal concentration measurements (atoms/cm ), and crystal quality and impurity lattice site analysis. Its primary application is quantitative depth profiling of semiconductor thin films and multilayered structures. It is also used to measure contaminants and to study crystal structures, also primarily in semiconductor materials. Other applications include depth profilii of polymers, high-T superconductors, optical coatings, and catalyst particles. ... 

The simplest and most widely used model to explain the response of organic photovoltaic devices under illumination is a metal-insulaior-metal (MIM) tunnel diode [55] with asymmetrical work-function metal electrodes (see Fig. 15-10). In forward bias, holes from the high work-function metal and electrons from the low work-function metal are injected into the organic semiconductor thin film. Because of the asymmetry of the work-functions for the two different metals, forward bias currents are orders of magnitude larger than reverse bias currents at low voltages. The expansion of the current transport model described above to a carrier generation term was not taken into account until now. 

V.G. Kozlov, V. Bulovic, P.E. Burrows, M. Baldo, V.B. Khalfin, G. Pailhasarathy, S.R. Forrest, Y. You, M. E. Thompson, Study of lasing action based on Forster energy transfer in optically pumped otganic semiconductor thin films, J. Appl. Phys. 1998, 4, 4096. 

Davis, R., Silicon Carbide and Diamond Semiconductor Thin Films, M/w. Ceram. Soc. Bull, 72(7) 99-106(July 1993)... 

A quantitative analysis of the kinetics of CdSe deposition from selenosulfate, Cd(II)-EDTA baths in terms of a mechanism involving nucleation and electrode kinetics has been given by Kutzmutz et al. [65], Note also that selenosulfate-containing baths have been used for the anodic selenization of vacuum-deposited metal films in order to synthesize CdSe and other binary selenide semiconductor thin films such as CuSe and InSe [66],... 

Rastogi AC, Balakiishnan KS, Garg A (1993) A new electrochemical selenization technique for preparation of metal-selenide semiconductor thin films. J Electrochem Soc 140 2373-2375... 

Riveros G, Gomez H, Henriquez R, Schrebler R, Marotti RE, Dalchiele EA (2001) Electrodeposition and characterization of ZnSe semiconductor thin films. Sol Energy Mater... 

Nasr C, Hotchandani S, Kim WY, Schmehl RH, Kamat PV (1997) Photoelectrochemistry of composite semiconductor thin films. Photosensitization of Sn02/CdS coupled nanocrystal-Utes with a ruthenium polypyridyl complex. J Phys Chem B 101 7480-7487... 

Compound semiconductor thin films Method Comment References... 

Arias-Carbajal Readigos, A. Garcia, V. M. Gomezdaza, O. Campos, J. Nair, M. T. S. Nair, R K. 2000. Substrate spacing and thin-film yield in chemical bath deposition of semiconductor thin films. Semicond. Sci. Technol. 15 ... 

Nanocrystalline semiconductor thin film photoanodes, commonly comprised of a three dimensional network of inter-connected nanoparticles, are an active area of photoelectrochemistiy research [78-82] demonstrating novel optical and electrical properties compared with that of a bulk, thick or thin film semiconductor [79,80]. In a thin film semiconductor electrode a space charge layer (depletion layer) forms at the semiconductor-electrolyte interface charge carrier separation occurs as a result of the internal electric... 

Klenkler RA, Xu G, Aziz H, Popovic ZD (2006) Charge-carrier mobility in an organic semiconductor thin film measured by photoinduced electroluminescence. Appl Phys Lett 88 242101... 

CdTe The mechanism of CdTe electrodeposition was studied intensively [194-197]. Electrodeposition of CdTe semiconductor thin films was carried out in acidic aqueous solutions at pH 1-3 [195-197]. To prevent accumulation of tellurium in CdTe film, the concentration of Te(IV) ions in acidic electrolyte must be much lower than the concentration of Cd(II). 

Sberveglieri, G., Comini, E., Faglia, G., Niederjaufner, G., Benussi, G.R,Contarini, G., Povolo, M. (1998) A novel electronic nose based on semiconductor thin films gas sensor to distinguish different heat treatments of milk. In Hurst, W.J. (ed) Seminars in Food Analysis. Chapman Hall, New York, pp 3 67-76. 

In this chapter, is a review of our recent studies on chemical and electrochemical synthesis of semiconductor thin films in solutions. They are a... 

New Approaches in Solution-phase Processing of Semiconductor Thin Films... 

Ceramic and semiconductor thin films have been prepared by a number of methods including chemical vapor deposition (CVD), spray-coating, and sol-gel techniques. In the present work, the sol-gel method was chosen to prepare uniform, thin films of titanium oxides on palladium Titanium oxide was chosen because of its versatility as a support material and also because the sol-gel synthesis of titania films has been clearly described by Takahashi and co-workers (22). The procedure utilized herein follows the work of Takahashi, but is modified to take advantage of the hydrogen permeability of the palladium substrate. Our objective was to develop a reliable procedure for the fabrication of thin titania films on palladium, and then to evaluate the performance of the resulting metalloceramic membranes for hydrogen transport and ethylene hydrogenation for comparison to the pure palladium membrane results. 

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