使用高纯SnO2粉和石墨粉混合物作为锡催化剂的来源,硅片作为硅的来源和产物生长的基底,用化学气相沉积法在硅片上准备了有序排列的氧化硅纳米线组成的微米结构,用扫描电子显微镜(SEM)、X-射线能谱仪(EDX)、透射电子显微镜(TEM)和选区电子衍射谱图(SAED)对其进行了表征.结果表明:直径为5-15 μm,长度达到50-100 μm的微米结构由紧密排列的非晶氧化硅纳米线组成,氧化硅纳米线的直径为100-200nm,长度达到50-100 μm.根据对其生长过程的分析,锡催化生长表现出不同于传统的VLS机制,一颗锡催化剂液滴能同时诱导多根纳米线的生长.根据室温下的光致发光谱分析,非晶氧化硅纳米线在395 nm(3.14 eV)处有一强峰,激发波长为260nm(4.77 eV).
参考文献
| [1] | Z.L.Wang,Z.Dai,S.Sun,Polyhedral Shapes of Cobalt Nanocrystals and Their Effect on Ordered Nanocrystal Assembly.Advanced Materials,12(24),1944(2000) |
| [2] | S.Bhowmick,K.Alam,Effects of source-drain underlaps on the performance of silicon nanowire on insulator transistors.Nano-Micro Letters,2(2),83(2010) |
| [3] | D.P.Yu,Q.L.Hang,Y.Ding,H.Z.Zhang,Z.G.Bai,J.J.Wang,Y.H.Zou,W.Qian,G.C.Xiong,S.Q.Feng,Amorphous silica nanowires:Intensive blue light emitters.Applied Physics Letters,73,3076(1998) |
| [4] | Q.Wei,G.W.Meng,X.H.An,Y.F.Hao,L.D.Zhang,Synthesis and photoluminescence of aligned straight silica nanowires on Si substrate.Solid State Communications,138(7),325(2006) |
| [5] | J.Y.Yang,S.G.Lu,S.R.Kan,X.J.Zhang,J.Du,Electrochemical preparation of silicon nanowires from nanometre silica in molten calcium chloride,Chemical Communications,22,3273(2009) |
| [6] | A.Katz,M.E.Davis,Molecular imprinting of bulk,microporous silica,Nature,403,286(2000) |
| [7] | D.K.Sood,P.K.Sekhar,S.Bhansali,Ion implantation based selective synthesis of silica nanowires on silicon wafers.Applied Physics Letters,88(14),3110(2006) |
| [8] | C.H.Liang,L.D.Zhang,G.W.Meng,Y.W.Wang,Z.Q.Chu,Preparation and characterization of amorphons SiOxnanowires,Journal of Non-Crystalline Solids,277(1),63(2OO0) |
| [9] | B.Zheng,Y.Y.Wu,P.D.Yang,J.Liu,Synthesis of UltraLong and Highly Oriented Silicon Oxide Nanowires from Liquid Alloys.Advanced Materials,14(2),122(2002) |
| [10] | S.H.Sun,G.W.Meng,M.G.Zhang,Y.T.Tian,T.Xie,L.D.Zhang,Preparation and characterization of oriented silica nanowires,Solid State Communications,128(8),287(2003) |
| [11] | Z.W.Pan,Z.R.Dai,C.Ma,Z.L.Wang,Molten gallium as a catalyst for the large-scale growth of highly aligned silica nanowires,Journal of American Chemical Society,124(41),1817(2002) |
| [12] | Y.Q.Zhu,W.K.Hsu,M.Terrones,N.Grobert,W.B.Hu,J.P.Hare,H.W.Kroto,D.R.M.Walton.Microscopy study of the growth process and structural features of silicon oxide nanoflowers,Chemistry of Materials,11(10),2709(1999) |
| [13] | Y.Q.Zhu,W.K.Hsu,M.Terrones,N.Grobert,H.Terrones,J.P.Hare,H.W.Kroto,D.R.M.Walton,3D Silicon oxide nanostructures:from nanoflowers to radiolaria,Journal Materials Chemistry,8(8),1859(1998) |
| [14] | Y.W.Wang,C.H.Liang,G.W.Meng,X.S.Peng,L.D.Zhang,Synthesis and photoluminescence properties of amorphous SiOx nanowires,Journal Materials Chemistry,12,651(2002) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%