Single crystal thin films

Diamond is obtained as a polycrystalline material by CVD with properties similar to these of natural diamond. Efforts to produce single crystal thin films have so far been largely unsuccessful. 

To compare these methods, in Fig. 40 we show (a) EIX vs. J and (b) /Ph vs. E plots for a CVD single crystal thin-film electrode. We see that with increase in illumination intensity J, the open-circuit potential E(X approaches a limit of 0.7 V, which is close to the photocurrent onset potential (0.75 V). [The photocurrent density squared vs. potential dependence for this electrode, although far from linear (unlike that of Fig. 38), by the extrapolation to yph -> 0 gives the potential value of approx. 0.65 V.] It is concluded that, on the whole, methods (i) and (ii) are in a good agreement and can be used in the determination of the flat-band potential. Similar results were obtained with HTHP single crystals. 

The study of isopropyl benzene can be sumnarized as follows. The width of the UPS line corresponding to removal of the lowest binding energy ir-electron is temperature dependent. This temperature dependence contributes significantly to the UPS line-width at elevated temperatures. The fact that the width is temperature dependent indicates that the mechanism involves vibrations. Although experimentally, intramolecular and inter-molecular effects could not be separated, theoretical models predict that of the effect is mostly intermolecular. The small residual linewidth observed is due to sample inhomogeneities. Presumably, an ideal single crystal thin film would exhibit the same A(T) but have a smaller A. ... 

Nonlinear optical infrared-visible sum frequency generation (IR-vis SFG) is a versatile surface-specific vibrational spectroscopy that meets the requirements mentioned above. SFG provides vibrational spectra of molecules adsorbed on a surface, while the molecules in the gas phase do not produce a signal. Consequently, SFG can be operated in a pressure range from UFIV to ambient conditions and still detects only the adsorbed species. A direct comparison of adsorbate structures under UFIV and elevated pressure is therefore feasible. Furthermore, SFG can be applied to molecules adsorbed on single crystals, thin films, metal foils, and supported nanoparticles (46,116-121) and is thus a promising tool to extend surface science experiments to more realistic conditions. 

M. H. Francombb and H. Sato (Eds.), Single Crystal Thin Films, Pergamon Press, Oxford, 1964. 

Crystal chemistry 13,6.7.2,1 Synthesis, single crystal, thin film 18,... 

Formation by cooxidation 18, 17.2.5.5.9 Structure,. synthesis, single crystal, thin film and tape 18, 17.3.10.2.3 Bi2Ca2Cii30 gSr2 Bi2Sr2Ca2Cu,O 0 Smicture 6, 3.10.3.2.1 Structure, synthesis, single crystal, thin Him and tape 18, 17.3.10.2.3 Bl2CuOgSe2 Bi2Sr2CuOg... 

Liu, C.-Y. Bard. A.J. Optoelectronic properties and memories based on organic single-crystal thin films. Acc. Chem. Res. 1999, 32. 235. 

Metal/ceramic PBs are not only the most important feature in ceramic-reinforced metal-matrix composites, but they also occur when metals are oxidized or when oxides are reduced to the metal or when a metal film is grown on a ceramic substrate (or vice versa). In Figure 15.19 particles of W have grown on a single-crystal thin film of SiC. The... 

C.-Y. Liu, A.J. Bard, In-situ regrowth and purification by zone melting of organic single crystal thin films yielding significantly enhanced optoelectronic properties. Chem. Mater. 12, 2353-2362 (2000)... 

Itoh, H., Hotta, K., Takara, H., and Sasaki, K., Frequency doubling of a Nd YAG laser by a MNA single crystal thin film on a slab-type optical glass waveguide, Appl. Opt., 25, 1491-1494 (1986). 

The same line of reasoning applies for the case of an anisotropic material supporting and equi-biaxial extensional mismatch strain and zero shear strain. Consider a cubic single crystal thin film with a (001) film-substrate interface plane. The mismatch strain and mismatch stress in this film can be estimated using x-ray diffraction measurements along with (3.43) and (3.45) by noting that... 

For even a relatively small number of interacting dislocations which have independent degrees of freedom in a thin film system, the behavior becomes very complex. In order to deal with this complexity, Nicola et al. (2003) reformulated the problem of dislocation formation and interaction in a strained single crystal thin film to allow for determination of its features by numerical methods. A single crystal thin film on an elastic substrate was considered to deform under plane strain conditions. Edge dislocations... 

Atomistics and Discrete Dislocation Plasticity Simulation of Nanoindentation into Single Crystal Thin Films. 

J. Berrehar, C. Lapersonne-Meyer. and M. Schott. Polydiacetylene single crystal thin films, Appl. Pins. Lett. 45 630 (1986). 

Lange, F.F. (1996) Chemical solution routes to single-crystal thin films. Science, 273, 903. 

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