报道了一种基于自组装生长ZnO纳米结构的光电导型紫外探测器.首先,在石英衬底上制备银叉指电极,然后溅射ZnO纳米薄膜形成一种共面光电导型金属-半导体-金属(MSM)结构,再利用低压CVD生长方法进行ZnO纳米线的原位生长,从而在器件顶部形成了ZnO纳米线垂直阵列和其上交错排列ZnO纳米线所构成的双层ZnO纳米线结构.这种器件底部的ZnO薄膜既是MSM光电导器件的电荷传输层,也同时作为上层ZnO纳米结构自组装生长的籽晶层,顶部的ZnO纳米结构层作为紫外光敏感层,测试结果表明该器件具有光响应速度快、光响应电流大和良好的紫外响应可分辨特性.研究表明,相比于单根ZnO纳米线光电导紫外器件而言,基于ZnO纳米结构膜层的光电导紫外探测器能够大幅度提高可测光响应电流.
参考文献
| [1] | Suo Bai;Weiwei Wu;Yong Qin;Nuanyang Cui;Dylan J. Bayerl;Xudong Wang .High-Performance Integrated ZnO Nanowire UV Sensors on Rigid and Flexible Substrates[J].Advanced functional materials,2011(23):4464-4469. |
| [2] | Soci C;Zhang A;Xiang B;Dayeh SA;Aplin DPR;Park J;Bao XY;Lo YH;Wang D .ZnO nanowire UV photodetectors with high internal gain[J].Nano letters,2007(4):1003-1009. |
| [3] | Y.W.HEO;B.S.KANG;L.C.TIEN;D.P.NORTON;F.REN;J.R.LA ROCHE;S.J.PEARTON .UV photoresponse of single ZnO nanowires[J].Applied physics, A. Materials science & processing,2005(3):497-499. |
| [4] | Ghosh R;Dutta M;Basak D .Self-seeded growth and ultraviolet photoresponse properties of ZnO nanowire arrays[J].Applied physics letters,2007(7):73108-1-73108-3-0. |
| [5] | Zhi-Min Liao;Kai-Jian Liu;Jing-Min Zhang;Jun Xu;Da-Peng Yu .Effect of surface states on electron transport in individual ZnO nanowires[J].Physics Letters, A,2007(3):207-210. |
| [6] | 邓蕊,张锷,张喜田.ZnO纳米钉的制备和光学性质研究[J].人工晶体学报,2007(04):793-797. |
| [7] | 贺永宁,张雯,崔吾元,崔万照,张瑞智,徐友龙.ZnO纳米线阵列膜的自组装生长及其金属接触特性[J].硅酸盐学报,2010(01):17-20. |
| [8] | 王万君,张艳,吴海霞.热蒸发快速氧化法制备四枝杈纳米氧化锌[J].人工晶体学报,2011(01):38-43. |
| [9] | He, Y.;Zhang, W.;Zhang, S.;Kang, X.;Peng, W.;Xu, Y..Study of the photoconductive ZnO UV detector based on the electrically floated nanowire array[J].Sensors and Actuators, A. Physical,2012:6-12. |
| [10] | J. Bollmann;D.K. Simon.Deep level defects in ZnO[J].Physica, B. Condensed Matter,2014:14-19. |
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%