ZnO纳米粒子结构对光电量子限域特性的影响  

Effect of ZnO Nanoparticle Structure on Photo-electric Quantum Confinement Properties of Photogenerated Charges

作　　者：林艳红[1] 王德军[1] 肇启东[1] 杨敏[1] 张清林[1] 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2003年第11期2077-2079,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 2 73 0 2 7);教育部博士学科点基金 (批准号 :0 2 0 183 0 0 8);吉林大学纳米材料专项基金资助

摘　　要：The ZnO quantum dot particles with an average particle size 3 nm and the ZnO nanorods with an average length of 80 nm and width about 14 nm were synthesized by the sol-gel method. The surface photovoltaic properties of ZnO nanoparticles were investigated by means of FISPS technique and the bands in FISPS were identified. The results show that the surface photovoltaic properties of ZnO nanoparticles make a great difference for the structures or sizes due to the quantum confinement effect. The photovoltaic response intensity of ZnO nanorods is two-orders of magnitude stronger than that of quantum dot particles. And it is found that the ZnO quantum dot particles exhibit significant quantum confinement properties of photogenerated charges. The photovoltaic response bands of ZnO nanorods are related to band-band transition and bound exciton transition, respectively.The ZnO quantum dot particles with an average particle size 3 nm and the ZnO nanorods with an average length of 80 nm and width about 14 nm were synthesized by the sol-gel method. The surface photovoltaic properties of ZnO nanoparticles were investigated by means of FISPS technique and the bands in FISPS were identified. The results show that the surface photovoltaic properties of ZnO nanoparticles make a great difference for the structures or sizes due to the quantum confinement effect. The photovoltaic response intensity of ZnO nanorods is two-orders of magnitude stronger than that of quantum dot particles. And it is found that the ZnO quantum dot particles exhibit significant quantum confinement properties of photogenerated charges. The photovoltaic response bands of ZnO nanorods are related to band-band transition and bound exciton transition, respectively.

关 键 词：ZNO 纳米粒子 结构 光电量子限域 激子态 场诱导表面光电压谱 半导体材料 氧化锌 

分 类 号：TN304.21[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]