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In the previous chapters, various solution deposition techniques to produce inorganic films on solid and flexible substrates were discussed. These techniques can be employed to obtain tailor-made homogenous and heterogeneous, single and multilayer films to cater various applications such as optoelectronic, sensing, and memory devices. In many such complex and highly efficient devices, the foundation layer or layers of materials play an important task in enhancing the efficiency of the final assemblies. These improvements owe to the constituent polymeric or inorganic molecular arrangements, interfacial interactions, morphology and thickness of the film, and the extrinsic characteristic of the layer. For example, the introduction of antireflection coating to a solar cell assembly improves light absorption and thus increases the power conversion efficiency. Similarly, successful magnetoelectric coupling in ferroelectric-ferromagnetic bilayer or multilayer thin films can be utilized as sensors, actuators, and switches. Thus, it is important to know the type of films that can be grown for its successful integration in customized devices. In this chapter, a brief description and introductory notes are provided about the development and use of various types of thin films, such as semiconducting, heterostructure, functional oxides, transparent conducting, thermo- and photochromic, multiferroic, corrosion resistance coating, hydrophobic, and others. Such films are the foundation stones for realizing more complex but cutting edge devices for future generations. |
