Optical micro/nano-spherical cavities can be designed to confine light by generating resonances in whispering gallery modes (WGM) and then couple them into the substrate through leaky modes, which can be potentially used in thin film solar cells for absorption enhancements. In this work, the transparent ZnO electrodes in a hollow nanosphere (HNS) structure were proposed as WGM resonators to tra...

We fabricated and characterized the amorphous silicon thin-film transistor (a-Si:H TFT) pixel electrode circuit with currentscaling function that can be used for active-matrix organic lightemitting displays (AM-OLEDs). As expected from previously reported simulation results, fabricated circuit showed an acceptable current-scaling performance for a high-resolution AM-OLED based on a-Si:H TFTs.

We fabricated and characterized the amorphous silicon thin-film transistor (a-Si:H TFT) pixel electrode circuit with currentscaling function that can be used for active-matrix organic lightemitting displays (AM-OLEDs). As expected from previously reported simulation results, fabricated circuit showed an acceptable current-scaling performance for a high-resolution AM-OLED based on a-Si:H TFTs.

Thin film hydrogenated amorphous silicon solar cells have been improved significantly through research, development and manufacturing since their discovery twenty years ago, but there are still a number of fundamental problems and issues that must be resolved before they can reach their full potential. There is still a significant lack of knowledge about the structure and bonding of hydrogenate...

A new form of hybrid carbon-based thin film was prepared via a pyridine chemical vapour deposition method. The as-obtained films consist of agglomerated flowerlike graphene nanowhiskers embedded in a uniform matrix of amorphous carbon. Schottky solar cells made from the hybrid films and n-type silicon show conversion efficiencies of approximately 1% under AM 1.5 illumination.

the surface and interfacial analysis of silicon oxide film on silicon substrate is particularly crucial in the nano-electronic devices. for this purpose, series of experiments have been demonstrated to grow oxide film on si (111) substrate. then these films have been used to study the structure of the film by using x-ray photo emission spectroscopy (xps) technique. the obtained results indicate...

An important concern in the deposition of thin hydrogenated amorphous silicon () films is to obtain smooth surfaces. Herein, we combine molecular-dynamics simulations with first-principles density functional theory calculations to elucidate the smoothening mechanism of plasma deposited thin films. We show that the deposition precursor may diffuse rapidly on the film surface via overcoordinated ...

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X-ray photoelectron spectroscopy (XPS) and medium energy ion scattering (MEIS) are used to determine chemical bonding and composition of ultra-thin films of mixed yttrium, silicon, and oxygen, formed by oxidation of metal on clean and pre-treated silicon. XPS and MEIS analyses indicate that oxidation of yttrium on bare silicon results in a fully oxidized film with a significant fraction of Y-O-...

Carrier transport was investigated in two different types of ultra-thin silicon films, polycrystalline silicon (poly-Si) films with large grains > 20 nm in size and hydrogenated nanocrystalline silicon (nc-Si:H) films with grains 4 nm – 8 nm in size. It was found that there were local non-uniformities in grain boundary potential barriers in both types of films. Single-electron charging effects ...