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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2015. V. 18, N 4. P. 460-463.
Long-wave light sensitivity of a thin film system
based on PbI2 and Cu
under action of external fields
V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine 45, prospect Nauky, 03028 Kyiv, Ukraine Abstract. Photostimulated interaction in a sandwich-like thin film system based on PbI2 and Cu (photodoping effect) makes it possible to use the system as a recording medium. On the other hand, since the layer consisting of copper nanoparticles embedded into the PbI2 matrix is formed as a result of photodissolution of Cu film, this effect can be considered as an original way to produce nanocomposites. In this work, long-wave sensitivity of the PbI2–Cu2O–Cu system has been studied in conjunction with the structure of the PbI2 film. It has been established that, in the h < Eg (PbI2) spectral region the light absorption in PbI2 film and the metal film, the photodissolution rate is higher for the less compact (more porous) PbI2 films. Keywords: photodoping, nanoparticles, nanocomposite, inorganic photoresist, thin film, copper, lead iodide, Wemple and DiDomenico single-oscillator model.
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