@article{25351, keywords = {Zinc oxide, Lasing, Nanowires semiconductor, Ordered arrays 2D}, author = {Peidong Yang and Haoquan Yan and Samuel S Mao and Richard E Russo and Justin Johnson and Richard Saykally and Nathan Morris and Johnny Pham and Rongrui He and Heon-Jin Choi}, title = {Controlled growth of ZnO nanowires and their optical properties}, abstract = {

This article surveys recent developments in the rational synthesis of single-crystalline zinc oxide nanowires and their unique optical properties. The growth of ZnO nanowires was carried out in a simple chemical vapor transport and condensation (CVM system. Based on our fundamental understanding of the vapor-liquid-solid (VLS) nanowire growth mechanism, different levels of growth controls (including positional, orientational, diameter, and density control) have been achieved. Power-dependent emission has been examined and lasing action was observed in these ZnO nanowires when the excitation intensity exceeds a threshold (~40 kW cm-2). These short-wavelength nanolasers operate at room temperature and the areal density of these nanolasers on substrate readily reaches 1 X 1010 cm-2. The observation of lasing, fabricated mirrors indicates these single-crystalline, well-facetted nanoaction in these nanowire arrays without any wires can function as self-contained optical resonance cavities. This argument is further supported by our recent near-field scanning optical microscopy (NSOM) studies on single nanowires.

}, year = {2002}, journal = {Advanced Functional Materials}, volume = {12}, pages = {323-331}, month = {05/2002}, doi = {10.1002/1616-3028(20020517)12:5<323::AID-ADFM323>3.0.CO;2-G}, note = {

LBNL-51429 NOT IN FILE

}, language = {eng}, }