| 王彩凤,李洁.多孔Si/纳米ZnS复合材料发光的研究[J].光电子激光,2014,(6):1129~1133 |
| 多孔Si/纳米ZnS复合材料发光的研究 |
| Study on luminescence of the composite materials of porous Si/nano-ZnS |
| 投稿时间：2013-12-25 |
| DOI： |
| 中文关键词: 多孔Si ZnS薄膜 光致发光(PL) 透射 白光发射 |
| 英文关键词:porous Si ZnS film photoluminescence (PL) transmission white light emission |
| 基金项目:山东省自然科学基金(ZR2011AL020)资助项目 (1.滨州学院 光电工程系,山东 滨州 256603； 2.滨州学院 航空信息技术研发中心,山东 滨州 256603) |
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| 中文摘要: |
| 利用脉冲激光沉积(PLD)分别在Si片和多孔Si衬底 上沉积了ZnS薄膜,考察衬底对ZnS薄膜结构和发光性能的影响。X射线衍射(XRD)和扫描电镜 (SEM)测量表明,两种衬底上制备的ZnS薄 膜均沿立方相结构β-ZnS(111)晶向择优取向生长。多孔Si衬底 上生长的ZnS薄膜表面有很多 凹坑,而Si衬底上生长的ZnS薄膜表面相对比较平整。光致发光(PL)谱显示,ZnS薄膜沉积后 , 多孔Si的发光峰强度减小且峰位发生蓝移。根据ZnS薄膜具有较高透射率的特点,把透射 出ZnS的多孔Si的橙红光和ZnS的发光叠加,多孔Si/ZnS纳米薄膜复合体系在可见光区有 很强的PL现象。 |
| 英文摘要: |
| ZnS films have been deposited on Si an d porous Si substrates using pulsed laser depositon (PLD).The influence of subst rates on the structure and luminescent properties of ZnS films is investigated.The X-ray diffractometer (XRD) and scanning electron mi croscopy (SEM) are used to study the different properties of ZnS films deposited on the porous Si substrate and the Si substrate.The XRD results show that ZnS films deposited on the two sub strates both have a crystalline structure of cubic phase and excellent growth trend along β-ZnS(111)direction. There are many pits in ZnS films deposited on porous Si substrate,while the film s deposited on Si substrate are smooth as seen in SEM images.This indicates the difference betwee n the porous Si substrate and the Si substrate.The photoluminescence spectra ar e measured at room temperature. A blue shift of porous Si peak and decreas e of its luminescent intensity occur after ZnS films are deposited.According to the high transmittan ce of ZnS films, the orange-red light of porous Si transmitted from ZnS and the light emitted by ZnS are added together,and an intensive photoluminescence phenomenon of the p orous Si/ZnS nanostructure composites is obtained in the visible region. |
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