采用低功率直流反应磁控溅射法,在Si衬底上成功制备出了具有高c轴择优取向的ZnO薄膜,利用X射线衍射仪、荧光分光光度计研究了沉积温度对ZnO薄膜微观结构及光致发光特性的影响.结果表明,合适的衬底温度有利于提高ZnO薄膜结晶质量;在室温下测量样品的光致发光谱(PL),观察到波长位于440nm左右和485nm左右的蓝色发光峰及527nm左右微弱的绿光峰,随衬底温度升高,样品的PL谱中蓝光强度都明显增大,低功率溅射对其蓝光发射具有很重要的影响.综合分析得出440nm左右的蓝光发射应与Zni有关,485nm附近的蓝光发射是由于氧空位形成的深施主能级上电子跃迁到价带顶的结果,而527nm左右的较弱的绿光发射主要来源于导带底到氧错位缺陷能级的跃迁.生长温度主要是通过改变薄膜中缺陷种类及浓度而影响着ZnO薄膜的发光特性的.
参考文献
[1] | Bagnall DM;Chen YF;Zhu Z;Yao T;Koyama S;Shen MY;Goto T .Optically pumped lasing of ZnO at room temperature[J].Applied physics letters,1997(17):2230-2232. |
[2] | Ryu YR.;White HW.;Kim WJ. .Fabrication of homostructural ZnO p-n junctions[J].Journal of Crystal Growth,2000(4):419-422. |
[3] | Aoki T;Hatanaka Y;Look D C .[J].Applied Physics Letters,2000,76:3257. |
[4] | Tang ZK.;Yu P.;Kawasaki M.;Ohtomo A.;Koinuma H.;Segawa Y.;Wong GKL. .Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films[J].Applied physics letters,1998(25):3270-3272. |
[5] | Wang J Z;Du G T;Zhang Y T et al.[J].Journal of Crystal Growth,2004,263:269. |
[6] | Guo X L;Tabata H;Kawai T .[J].Journal of Crystal Growth,2001,213:122. |
[7] | Lee J H;Ko K H;Park B O .[J].Journal of Crystal Growth,2003,247:122. |
[8] | Lin B;Fu Z;Jia Y .[J].Applied Physics Letters,2001,79:943. |
[9] | Jeong S H;Kim B S;Lee B T .[J].Applied Physics Letters,2003,82:2625. |
[10] | 张德恒,王卿璞,薛忠营.不同衬底上的ZnO薄膜紫外光致发光[J].物理学报,2003(06):1484-1487. |
[11] | Gong Hengxiang;Wang Yinyue;Yan Zhijun et al.[J].Materials Science in Semiconductor Processing,2002,5:31. |
[12] | Lin SS.;Huang JL.;Lii DF. .The effects of r.f. power and substrate temperature on the properties of ZnO films[J].Surface & Coatings Technology,2004(2):173-181. |
[13] | 刘志文 .反应磁控溅射ZnO薄膜在Si基片上的生长行为[D].大连理工大学,2006. |
[14] | Kim K K;Song J H;Jung H J et al.[J].Journal of Applied Physics,2000,87:3573. |
[15] | Yang Chentao;Zeng Zeyu;Chen Zhu et al.[J].Journal of Crystal Growth,2006,293:299. |
[16] | Kim KS.;Kim HW.;Lee CM. .Effect of growth temperature on ZnO thin film deposited on SiO2 substrate[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(2):135-139. |
[17] | 傅竹西,林碧霞,祝杰,刘丽萍,彭小滔,贾云波.MOCVD方法生长的氧化锌薄膜及其发光特性[J].发光学报,2001(02):119-124. |
[18] | 孙玉明 .Cu掺杂氧化锌薄膜的发光特性研究[D].合肥:中国科学技术大学,2000. |
[19] | 孙成伟,刘志文,秦福文,张庆瑜,刘琨,吴世法.生长温度对磁控溅射ZnO薄膜的结晶特性和光学性能的影响[J].物理学报,2006(03):1390-1397. |
[20] | Vanheusden K.;Seager CH.;Tallant DR.;Voigt JA.;Gnade BE.;Warren WL. .MECHANISMS BEHIND GREEN PHOTOLUMINESCENCE IN ZNO PHOSPHOR POWDERS[J].Journal of Applied Physics,1996(10):7983-7990. |
[21] | Shi G.;Cai WL.;Zhang LD.;Mo CM. .Photoluminescence of ZnO nanoparticles in alumina membrane with ordered pore arrays[J].Solid State Communications,2000(5):253-256. |
[22] | Liu M;Kitai A H;Mascher P .[J].Luming,1992,54:35. |
[23] | Lin Bixia;Fu Zhuxi;Jia Yunbo .[J].Applied Physics Letters,2001,79:943. |
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%