低温条件下, 采用水热法, 通过控制前驱溶液的pH值, 在预先镀有ZnO纳米膜的导电玻璃衬底上制备了形貌各异的ZnO阵列, 用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)和紫外-可见分光光度计等分析手段对ZnO纳米棒的结构和形貌进行了表征. 同时还对不同形貌阵列的形成机理进行探讨. 结果表明, 所制ZnO纳米棒为单晶, 沿c轴择优生长. 在pH值为10.5左右时, 能得到取向性好、直径均匀(d~nm)的ZnO纳米棒阵列. 光学测试表明, 在可见光区透光度超过80%, 禁带宽度约为3.25eV.
By using the hydrothermal method, the ZnO nanorod arrays with different morphologies were synthesized on ZnO nanoparticle-coated transparent conductivity glasses (TCO) at low temperatures by controlling the pH value of precursory solutions. The ZnO nanorod arrays were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and ultraviolet-visible spectrophotometer (UV-Vis). Furthermore, the mechanism was primary discussed. The results show that the ZnO nanorod is a single crystal and it grows along c axis. When the pH value is about 10.5, the array is well-aligned and the diameter of the nanorod is uniform. Optical characterization shows that the optical transmittance of the film is higher than 80% in the visible wavelength and its band gap is about 3.25eV.
参考文献
| [1] | Mahalinggam T, John V S, Sebastian P J. Mater. Res. Bull., 2003, 38: 269--277. [2] Ismail B, Abaab M A, Rezig B. Thin Solid Films, 2001, 383: 92--94. [3] Huang M H, Mao S, Feick H, et al. Science, 2001, 292: 1897--1899. [4] Chan H B, Aksyuk V A, KleimanR N, et al. Science, 2001, 291: 1941--1944. [5] Law M, Greene L E, Johnson J C, et al. Nature Material, 2005, 4: 455--459. [6] Baxter J B, Aydil E S. Appl. Phys. Lett., 2005, 86: 053114. [7] Gao Y F, Nagai M. Langmuir, 2006, 22: 3936--3940. [8] Huang M H, Wu Y, Feick H, et al. Advance Material, 2001, 13: 113--116. [9] He J H, Hsu J H, Wang C H, et al. J. Phys. Chem. B, 2006, 110: 50--53. [10] Kar S, Pal B N, Chaudhuri S, et al. J. Phys. Chem. B, 2006, 110: 4605--4611. [11] Xu L, Guo Y, Liao Q, et al. J. Phys. Chem. B, 2005, 109: 13519--13522. [12] Vayssieres L, Keis K, Lindquist S-E, et al. J. Phys. Chem. B, 2001, 105: 3350--3352. [13] Wu X D, Zheng L J, Wu D. Langmuir, 2005, 21: 2665--2667. [14] W.P.Hsu J, R.Tian Z, C.Simmons N. Nano Lett., 2005, 5: 83--86. [15] Zhang H, Yang D R, Ma X Y, et al. J. Phys. Chem. B, 2005, 109: 17055--17059. [16] Li Q C, Kumar V, Li Y, et al. Chem. Mater., 2005, 17: 1001--1006. [17] Zhang L L, Guo C X, Chen J G, et al. Chin. Phys., 2005, 14: 586--591. [18] 刘晓新, 靳正国, 王惠, 等(LIU Xiao-Xin, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21 (4): 999--1004. [19] 刘红霞, 周圣明, 李抒智, 等. 物理学报, 2006, 55 (3): 1398--1401. [20] Fang Y P, Pang Q, Wen X G, et al. Small, 2006, 2: 612--615. [21] Li W J, Shi E W, Zhong W Z, et al. J. Cryst. Growth, 1999, 203: 186--196. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%