Amorphous semiconductors are materials with a brilliant prospect for a wide range of optical applications like solar cells, optical sensors, optical devices, and memories. The purpose of the present research was to study the semiconducting optical properties of SiO2-Al2O3-CaF2 and SiO2-Al2O3-BaF2 oxyfluoride...

In this paper, the development of wafer bonding techniques of the most frequently used materials Si-to-glass, glass-to-glass and Si-to-Si is reported. To improve the bond quality of Si-to-glass and make glass-to-glass bonding viable at bonding temperatures less than 300 C, a hydrogen-free amorphous silicon layer of 20-100 nm thickness is deposited as an intermediate layer. For Si-to-glass bondi...

Water is composed of two strong electrochemically active agents, H(+) and OH(-) ions, but has not been used as an active electronic material in oxide semiconductors. In this study, we demonstrate that water-infiltrated nanoporous glass electrically switches an oxide semiconductor from insulator to metal. We fabricated a field-effect transistor structure on an oxide semiconductor, SrTiO(3), usin...

Novel method doped carbon with nanoparticle Cr2O3 and thin film has been studied in much thought in wavelength range, the doping can help new excellent physical and chemical properties for carbon, this application has a semiconductor feature. Nanocomposite thin film deposited on copper and glass substrates have been created by utilizing Spray Pyrolysis method. The prec...

A field-heating (FH), field-cooling (FC), zero-field heating (ZFH) sequence was used to study nonergodic polarization response to dc electric field in x4.28 Rb,-,(ND4),D2As04 (DRADA) deuteron glass. Polarization change in the low-temperature nonergodic region varied with temperature T nearly as Ty, where 5SyS6. This result is compared with predictions of the bound charge semiconductor model for...

The ability to efficiently couple light into and out of semiconductor microcavities is an important aspect of many microphotonic technologies [153], and plays a vital role in chip-based implementations of cavity quantum electrodynamics (cQED) for quantum networking and cryptography [60, 9, 154]. While some geometries, such as micropillar cavities, exhibit highly directional emission that can be...

Title of dissertation: DELAY INDUCED INSTABILITIES IN COUPLED SEMICONDUCTOR LASERS AND MACKEY-GLASS ELECTRONIC CIRCUITS Min-Young Kim, Doctor of Philosophy, 2005 Dissertation directed by: Professor Rajarshi Roy Department of Physics We describe two experimental systems where a time-delayed feedback mechanism plays an important role in inducing instabilities. The first system consists of two cro...