PREPARATION OF METAL-SEMICONDUCTOR COMPOSITE FILMS BY CHEMICAL SPRAY-PYROLYSIS

Chemical spray pyrolysis (CSP) offers a simple and inexpensive means o f preparing metal-semiconductor composite (MSC) films with highly unus ual optical properties. Oftentimes, these systems may involve metals i n fairly complex semiconductors. Difficult at best to prepare, by stan dard deposition techniques, they have been studied for possible applic ations as nonlinear optical elements or photon detectors of optical ra diation, among others. After discussing some general conditions for wh ich the technique is applicable, results for the Ag-CuInSe2 MCS system prepared by CSP are discussed in detail as an example.