Thin films good-quality

The possibility to grow good-quality thin films at room temperature and normal pressure is the main advantage of SILAR relative to the gas-phase techniques. Moreover, since vacuum systems are not required, SILAR deposition equipment is simple and inexpensive. Similarly, toxic chemicals, such as selenium compounds, which are easier and safer to handle as solutions than as gases, can be more conveniently employed in SILAR. From the environmental point of view, a notable advantage of SILAR is that the system is totally closed and all the chemicals that are used are recyclable. Compared with other solution-phase methods, especially with CBD, an important advantage of SILAR is the facile control over film thickness using... 

The %(3) values were almost the same for PPV, PTV and MOPPV in the absorption wavelength region. Dispersion measurements are required in this energy range in order to clarify the nature of the resonance and to determine the maximum resonantly enhanced %0). The evaluated susceptibilities of the PAV films are almost the same order of magnitude as that of PDA films. This result indicates that PAV thin films may be effective for NLO device application, due to the ease in processing films as well as possible good optical quality. 

The polymers prepared by Lin show good thermal stability (Td up to 422°C), have high quantum efficiencies (4> up to 0.23 in DMF), and form good quality thin film by spin coating (Fig. 11). Green EL emission with a... 

Figure 18 shows the topographic image of 2c. The thin film has a surface roughness of 0.8—1.5 nm (R. M. S) in the 5X5 pm2 scan area. The morphological smoothness reveals that only a limited number of pin holes were introduced into the device layers with this polymer. The film has good optical quality and provides good contact with the next layer of deposited material. 

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