Preparation and Optical Properties of Highly Crystalline, Colloidal, and Size-Controlled Indium Oxide Nanoparticles


  • This work was supported by the National Research Laboratory (NRL) Program of the Korean Ministry of Science & Technology (MOST) and the Korea Science & Engineering Foundation (Project No. 1999-1-122-001-5). We thank the staffs of KBSI and KAIST for assistance with TEM analyses.


Highly crystalline and monodisperse In2O3 nanoparticles have been prepared by thermal decomposition of In(acac)3 in oleylamine under inert atmosphere. The particle size of In2O3 can be easily manipulated by changing the experimental conditions. A weak size dependence of photoluminescence is also demonstrated. The Figure shows a 3D superlattice of 6 nm diameter nanoparticles.