水溶液法制備ZnO納米結(jié)構(gòu)及其性質(zhì)研究
發(fā)布時間：2018-11-03 08:08
【摘要】：ZnO是一種多功能寬帶隙(3.37 eV)半導(dǎo)體,具有纖鋅礦晶體結(jié)構(gòu),室溫下具有較高的激子束縛能(60 meV),能夠?qū)崿F(xiàn)的受激發(fā)射。ZnO具有許多特殊的性質(zhì),具有較高的電子遷移率、良好的壓電性和熒光性,被廣泛應(yīng)用于發(fā)光二級管、場效應(yīng)晶體管、氣敏傳感器、太陽能電池和光催化等領(lǐng)域。目前人們將納米加工與隨后的生長技術(shù)相結(jié)合制備具有特殊功能的一維有序納米陣列成為當(dāng)前納米科技領(lǐng)域的研究熱點。主要集中在實現(xiàn)一維有序ZnO納米結(jié)構(gòu)的低成本、大面積制備并對其生長位置、尺寸、方向和均一性進行有效調(diào)控。本論文采用自組裝微納米球印刷與反應(yīng)離子刻蝕相結(jié)合制備圖案化的模板,通過水溶液法在模板上制備圖案化的ZnO納米結(jié)構(gòu)；利用掃描電子顯微鏡(SEM)、FLS920型熒光光譜儀和Maya-2000-Pro型紫外可見分光光度計等儀器對樣品的表面形貌和光學(xué)性能進行了表征,探討了不同形貌模板及水溶液生長條件對ZnO納米結(jié)構(gòu)的影響。主要研究內(nèi)容如下：1,點陣結(jié)構(gòu)的ZnO納米陣列制備：以帶有ZnO種子層的硅(100)基片為基礎(chǔ),重點研究了聚苯己烯球自組裝技術(shù)制備六角點陣結(jié)構(gòu)模板的方法,并探討了水溶液生長條件對制備大面積六角點陣結(jié)構(gòu)的ZnO納米棒陣列的影響。研究結(jié)果顯示,聚苯乙烯微球的尺寸和反應(yīng)離子刻蝕參數(shù)是影響六角點陣結(jié)構(gòu)模板的關(guān)鍵,而水溶液生長條件對ZnO納米結(jié)構(gòu)的形貌有重要影響。此外,我們還測量了ZnO納米棒陣列的室溫光致熒光光譜,探討了ZnO納米棒的直徑對紫外發(fā)光峰位的影響。2,ZnO納米花陣列制備：通過在帶有自組裝聚苯乙烯球單層膜的硅(100)基片上沉積ZnO種子層的方法制備了球形及環(huán)形點陣模板,進而制備了具有周期結(jié)構(gòu)的海膽狀ZnO納米花陣列和ZnO納米花環(huán)狀點陣。以亞甲基藍水溶液為降解物,比較了不同形貌的ZnO納米棒陣列的光降解能力,發(fā)現(xiàn)單位基片面積上ZnO納米棒的有效受光面積是影響ZnO納米棒陣列光降解能力的重要因素。
[Abstract]:ZnO is a multifunctional wide band gap (3.37 eV) semiconductor with wurtzite crystal structure and high exciton binding energy (60 meV),). ZnO has many special properties. Because of its high electron mobility, good piezoelectric and fluorescence properties, it has been widely used in the fields of light emitting secondary tubes, field effect transistors, gas sensors, solar cells and photocatalysis. At present, the synthesis of one-dimensional ordered nanoarrays with special functions by combining nanoprocessing with subsequent growth techniques has become a research hotspot in the field of nanotechnology. It mainly focuses on the realization of one-dimensional ordered ZnO nanostructures with low cost, large area preparation and effective control of their growth location, size, direction and uniformity. In this thesis, the patterned ZnO nanostructures were prepared on the template by self-assembled microsphere printing and reactive ion etching. The surface morphology and optical properties of the samples were characterized by scanning electron microscope (SEM) (SEM), FLS920 fluorescence spectrometer and Maya-2000-Pro UV-Vis spectrophotometer. The effects of different morphology templates and aqueous solution growth conditions on ZnO nanostructures were investigated. The main research contents are as follows: 1. Preparation of ZnO nanoarrays with lattice structure: based on silicon (100) substrate with ZnO seed layer, the method of fabricating hexagonal lattice structure template by self-assembly of polyphenylhexene spheres was studied. The effect of the growth conditions of aqueous solution on the preparation of ZnO nanorod arrays with large hexagonal lattice structure was investigated. The results show that the size of polystyrene microspheres and the etching parameters of reactive ions are the key factors affecting the template of hexagonal lattice structure, and the growth conditions of aqueous solution have an important effect on the morphology of ZnO nanostructures. In addition, we also measured the photoluminescence spectra of ZnO nanorod arrays at room temperature, and discussed the influence of the diameter of ZnO nanorods on the UV luminescence peak. Preparation of ZnO nanoscale arrays: spherical and annular lattice templates were prepared by depositing ZnO seed layer on silicon (100) substrates with self-assembled polystyrene ball monolayers. Furthermore, sea urchin-like ZnO nano-flower array and ZnO nano-flower ring lattice with periodic structure were prepared. The photodegradation ability of ZnO nanorod arrays with different morphologies was compared with methylene blue aqueous solution. It was found that the effective light-receiving area of ZnO nanorods in unit substrate area was an important factor affecting the photodegradation ability of ZnO nanorod arrays.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.1;O614.241
本文編號：2307211
[Abstract]:ZnO is a multifunctional wide band gap (3.37 eV) semiconductor with wurtzite crystal structure and high exciton binding energy (60 meV),). ZnO has many special properties. Because of its high electron mobility, good piezoelectric and fluorescence properties, it has been widely used in the fields of light emitting secondary tubes, field effect transistors, gas sensors, solar cells and photocatalysis. At present, the synthesis of one-dimensional ordered nanoarrays with special functions by combining nanoprocessing with subsequent growth techniques has become a research hotspot in the field of nanotechnology. It mainly focuses on the realization of one-dimensional ordered ZnO nanostructures with low cost, large area preparation and effective control of their growth location, size, direction and uniformity. In this thesis, the patterned ZnO nanostructures were prepared on the template by self-assembled microsphere printing and reactive ion etching. The surface morphology and optical properties of the samples were characterized by scanning electron microscope (SEM) (SEM), FLS920 fluorescence spectrometer and Maya-2000-Pro UV-Vis spectrophotometer. The effects of different morphology templates and aqueous solution growth conditions on ZnO nanostructures were investigated. The main research contents are as follows: 1. Preparation of ZnO nanoarrays with lattice structure: based on silicon (100) substrate with ZnO seed layer, the method of fabricating hexagonal lattice structure template by self-assembly of polyphenylhexene spheres was studied. The effect of the growth conditions of aqueous solution on the preparation of ZnO nanorod arrays with large hexagonal lattice structure was investigated. The results show that the size of polystyrene microspheres and the etching parameters of reactive ions are the key factors affecting the template of hexagonal lattice structure, and the growth conditions of aqueous solution have an important effect on the morphology of ZnO nanostructures. In addition, we also measured the photoluminescence spectra of ZnO nanorod arrays at room temperature, and discussed the influence of the diameter of ZnO nanorods on the UV luminescence peak. Preparation of ZnO nanoscale arrays: spherical and annular lattice templates were prepared by depositing ZnO seed layer on silicon (100) substrates with self-assembled polystyrene ball monolayers. Furthermore, sea urchin-like ZnO nano-flower array and ZnO nano-flower ring lattice with periodic structure were prepared. The photodegradation ability of ZnO nanorod arrays with different morphologies was compared with methylene blue aqueous solution. It was found that the effective light-receiving area of ZnO nanorods in unit substrate area was an important factor affecting the photodegradation ability of ZnO nanorod arrays.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.1;O614.241
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