【摘要】 通过一步溶剂热法制备出导电性良好的立方状ITO纳米粉体。研究了不同溶剂、反应温度和反应时间对ITO粉体微观结构和电性能的影响。结果表明,以乙二醇为溶剂,在250℃下反应24h,ITO纳米粉体的电阻率最低为0.2Ω×cm,平均粒径为45.95 nm。随反应时间的延长,通过溶解-再结晶机制,棒状前驱体逐步向立方状In₂O₃转化。在In₂O₃晶体形成过程中,乙二醇和四甲基铵根离子吸附在晶体表面,使垂直于（200）晶面的生长速率降低,诱导形成立方状颗粒。更多还原

【Abstract】 Low-resistivity ITO nanoparticles were prepared in one step by the solvothermal method.The m icrostructure and electrical properties of ITO nanoparticles can be adjusted by changing solvents,reaction temperature and reaction time.The results sho w that the lowest electrical resistivity and the average size of ITO nanoparticles are 0.2Ω?cm and 45.95 nm,respectively when the reaction temperature and time are 250°C and 24 h,respectively with ethylene alcohol as solvent.As reaction time is prolonged,the rod-like indium hydroxides are transformed to cubic In₂O₃ nanoparticles gradually through the dissolution-recrystallization mechanism.During the formation of In₂O₃ nanocrystals,the growth rate perpendicular to（200）plane decreases,caused by the adsorption of glycol and tetramethyl ammonium ion on the surface of particles,which induces the for mation of cubic-shaped ITO nanoparticles.更多还原