Synthesis and optical properties of V2O5 nanorods

摘要

A two-step method was proposed in synthesizing V2O5 nanorods on planar substrates,i.e.,depositing a V2O3 thin film at approx 220 °C (by heating a pure sheet of vanadium in a rough vacuum) and then heating it in air at approx 400 °C.The V2O5 nanorods produced by this technique are single crystalline and could emit intense visible light at room temperature,possibly due to some defects such as oxygen vacancies which got involved during growth.This study provides a simple and low-substrate-temperature route in fabricating V2O5 nanorods on planar substrates,which might be also applicable to other metal oxides.