ZnO纳米线的光致发光性及拉曼散射性能
Photoluminescence and Raman Analysis of ZnO Nanowires
摘 要
利用物理热蒸发法通过控制载气流量和氧气流量制备出具有倒V字形尖端的ZnO 纳米线,利用荧光光谱仪、拉曼光谱仪对ZnO纳米线的光致发光性能和拉曼散射性能进行了测试.结果表明：与其它形状的ZnO纳米线的光致发光性能不同,该ZnO 纳米线在423～458 nm区域有一个宽频带强蓝光发射,在527 nm处出现一个非常弱的绿光发射,没有发现紫外光发射;相对于ZnO纳米粉,ZnO纳米线的拉曼光谱峰发生约3 cm-1红移,主要来源于光子限制效应.
光致发光谱
拉曼光谱
ZnO nanowire
photoluminescence
Raman spectrum
Abstract
ZnO nanowires with “V” tips have been prepared using thermal evaporation by controlling the carrier flow and O2 flow.The room-temperature photoluminescence (PL) and Raman scattering of ZnO nanowires have been investigated.Different from other morphology of ZnO nanowires’ PL spectra,broad and intense blue emission from 423 nm to 458 nm and weak green emission at 527 nm were observed for the “V” tip ZnO nanowires.However,no ultraviolet emission was observed.Compared with the Raman spectra of the ZnO powder,3 cm-1 red shift was observed for ZnO nanowires,which should be attributed to the phonon confinement.
中图分类号 TM23 O432.1
所属栏目
基金项目 陕西省自然科学基金资助项目(2004E117)
收稿日期 2006/11/30
修改稿日期 2007/3/15
网络出版日期
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备注于灵敏(1978-),女,河北石家庄人,讲师,博士研究生.
引用该论文: YU Ling-min,ZHANG Ke-liang,MA Xue-hong,FAN Xin-hui,YAN Wen. Photoluminescence and Raman Analysis of ZnO Nanowires[J]. Materials for mechancial engineering, 2007, 31(9): 64～66
于灵敏,张克良,马雪红,范新会,严文. ZnO纳米线的光致发光性及拉曼散射性能[J]. 机械工程材料, 2007, 31(9): 64～66
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参考文献
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【2】Ng H H,Chen B,Li J,et al.Optical properties of single-crystalline ZnO nanowires on m-sapphire[J].Applied Physics Letters,2003,82(13):2023-2026.
【3】Zhang D F,Sun L D,Yan C H.Optical properties of ZnO nanoplatelets and rectangular cross-sectioned nanowires[J].Chemical Physics Letters,2006,422(1/3):46-50.
【4】Wu G S,Zhuang Y L,Lin Z Q,et al.Synthesis and photoluminescence of Dy-doped ZnO nanowires[J].Physica E,2006,31(1):5-8.
【5】Yamamoto K,Nagasawa K,Ohmori T.Preparation and characterization of ZnO nanowires[J].Physica E 2004,24 (1/2):129-132.
【6】Wang J M,Gao L.Hydothermal synthesis and photoluminescence properties of ZnO nanowires[J].Solid State Communications,2004,132(3/4):269-271.
【7】Lee W,Jeong M C,Myoung J M.Catalyst-free growth of ZnO nanowires by metal-organic chemical vapor deposition and thermal evaporation[J].Acta Materialia,2004,52(13):3949-3957.
【8】Hou Tee Ng,Bin Chen,Jun Li.Optical properties of single-crystalline ZnO nanowires on m-sapphire[J].Applied Physics Letters,2003,82(13):2023-2025.
【9】Lu H Y,Chu S Y,Cheng S H.The vibration and photoluminescence properties of one-dimensional ZnO nanowires[J].Journal of Crystal Growth,2005,274(3/4):506-511.
【10】Mezy A,Anceau S,Bretagnon T.Optical properties of ZnO nanorods and nanowires[J].Superlattices and Microstructures,2006,39(1/4):358-365.
【11】Liao L,Liu D H Li J C.Synthesis and raman analysis of 1D-ZnO nanostructure via vapor phase growth[J].Applied Surface Science,2005,240(1/4):175-179.
【12】Sekar A,Kim S H.Catalyst free synthesis of ZnO nanowires on Si by oxidation of Zn powders[J].Journal of Crystal Growth,2005,277(1/4):471-478.
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