Accession Number:

ADA455949

Title:

New Generation Materials and Structures for Nanophotonics and Nanoelectronics

Descriptive Note:

Final rept., 1 Sep 2005-30 Apr 2006

Corporate Author:

STATE UNIV OF NEW YORK COLL AT BUFFALO

Personal Author(s):

• Prasad, Paras N.

Report Date:

2006-04-30

Pagination or Media Count:

102.0

Abstract:

This DURINT project produced high impact technical accomplishments. The notable accomplishments include building i new nanostructures, ii study of optoelectronic and magnetic properties, and iii fabrication of polymer based non-linear based photonic crystals and photonic circuitry, and iv fabrication of photodetctor as well as diffraction grating devices. On the preparation front, a modular colloidal route was devised to produce nano-heterostructures by integrating plasmonic Au, magnetic Fe3O4 and semiconducting PbS or PbSe moieties into a single platform. The properties of each component within the hybrids were strongly modulated by the conjugating components, due to the coherent interfaces between them. New ferromagnetic low temperature InMnP nanoparticles were synthesized. Far IR and Raman spectroscopies revealed additional vibrational features related to Mn-P vibrations that could help locate the Mn sites in the crystal. For photodetector devices, an organicinorganic polymeric nanocomposite consisting of poly-N-vinyl carbazolePVK, lead selenide quantum dotsQDs as photosensitizer and organic semiconductor pentacene as a conductivity booster, was constructed. The device exhibits dramatic enhancement of infrared photocurrent.

Descriptors:

• *OPTICAL PROPERTIES
• *MAGNETIC PROPERTIES
• *NANOSTRUCTURES
• INFRARED SPECTROSCOPY
• SEMICONDUCTORS
• DIFFRACTION
• DENDRIMERS
• PHOTONIC CRYSTALS
• PHOTODETECTORS
• PHOTOREFRACTIVE MATERIALS
• PLASMONS
• FERROMAGNETIC MATERIALS
• QUANTUM DOTS

Subject Categories:

• Electrooptical and Optoelectronic Devices
• Electricity and Magnetism
• Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE