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1 - 25 of 6
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Liu, Feng | Confining P diffusion in Si by an As-doped barrier layer | The miniaturization of Si-based devices requires control of doping profile, which makes the understanding of dopant interaction and diffusion in Si critical. The authors have studied the effect of As doping on P diffusion in Si using first-principles calculations. The authors found a form of As-vaca... | P diffusion; Silicon; Arsenic doping; As-doped barrier; Diffusion control | 2007 |
| 2 |
 | Tiwari, Ashutosh | CuBO2: a p-type transparent oxide | The authors report the synthesis of CuBO2, a p-type transparent oxide belonging to Cu-delafossite family. High quality thin films of CuBO2 were deposited on c-plane sapphire substrates by pulsed laser deposition technique. Detailed structural, optical, and electrical characterizations on these films... | Transparent conducting oxides; Delafossite series; CuBO2 | 2007 |
| 3 |
 | Liu, Feng | Impurity mediated absorption continuum in single-walled carbon nanotubes | The authors demonstrate that in single-walled carbon nanotubes, a weak impurity potential can lead to a strong above-gap absorption continuum. The total absorption is enhanced due to the intraband and indirect transitions, as well as plasmon excitations, which are forbidden in perfect nanotubes. Suc... | Carbon nanotubes; SWNT; Defects; Impurities; Above-gap; Absorption continuum | 2007 |
| 4 |
 | Liu, Feng | Making a field effect transistor on a single graphene nanoribbon by selective doping | Using first-principles electronic structure calculations, we show a metal-semiconductor transition of a metallic graphene nanoribbon with zigzag edges induced by substitutional doping of nitrogen or boron atoms at the edges. A field effect transistor consisting of a metal-semiconductor-metal junctio... | Graphene nanoribbon; Selective doping | 2007 |
| 5 |
 | Vardeny, Zeev Valentine | Studies of polymer microring lasers subject to uniaxial stress | The emission spectra of microring lasers fabricated from ∏-conjugated polymer films casted on nylon microfibers with diameters in the range of 35-90 µm were studied upon application of uniaxial stress with strain up to ~12%. The laser emission spectra substantially change with the applied stress,... | pi-conjugated polymers; Microring lasers; Uniaxial stress; DOO-PPV | 2007 |
| 6 |
 | Vardeny, Zeev Valentine | Unidirectional laser emission from ∏-conjugated polymer microcavities with broken symmetry | We report unidirectional laser emission from ∏-conjugated polymer microcavities with broken symmetry geometries such as spiral and microdisk containing a "line defect," in comparison with plain microdisk cavity having isotropic emission. We found that the laser emission directionality contrast ra... | pi-conjugated polymers; Unidirectional laser emission; Microcavities; DOO-PPV; Poly(dioctyloxy) phenyl vinylene | 2007 |
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