【正文】 1979 年荷蘭菲利浦公司首先研制成功，隨后投放市場，從此各種品種規(guī)格的稀土三基色熒光燈先后問世 [2]。 WLED 國 內(nèi) 外 研 究 進(jìn) 展 與 現(xiàn) 狀 國 外 WLED自 1973 年世界發(fā)生能源危機(jī)以來，各國紛紛致力于研制節(jié)能發(fā)光材料。稀土摻雜的釩、鉬酸鹽是一種很有潛力成為暖白 WLED 用的紅色發(fā)光粉。但目前用的發(fā)光粉都是黃粉，用這種粉做出的白色白光器件由于缺乏紅色顯色性很差，另一方面，藍(lán)光激發(fā)紅色發(fā)光粉市場緊缺，因而紅色熒光粉成為行業(yè)中亟需的發(fā)光粉。在實(shí)現(xiàn)白光的 WLED 的幾種原理中，藍(lán)色/紫外芯片+ 發(fā)光粉是目前唯一市場化的模式。 solidstatereaction method.5目 錄1 緒論 研究背景與意義 .....................................................................................................5 WLED 國內(nèi)外研究進(jìn)展與現(xiàn)狀 ..........................................................................5 國外 WLED ...................................................................................................5 國內(nèi) WLED ..................................................................................................6 白色光二極管 ......................................................................................................6 WLED 發(fā)光原理 ...........................................................................................6 WLED 所須熒光粉的要求 ...........................................................................7 WLED .......................................................10 熒光粉及稀土熒光粉 ..................................................................................10 稀土 ..........................................................................................................10 稀土釩酸鹽熒光粉 .....................................................................................12 稀土鉬酸鹽熒光粉 ......................................................................................12 無機(jī)熒光粉的制備方法 ....................................................................................13 固相反應(yīng) ......................................................................................................13 溶膠凝膠法 ................................................................................................13 燃燒法 ..........................................................................................................14 水熱合成法 ...............................................................................................14 研究的主要內(nèi)容 ................................................................................................142. 實(shí)驗(yàn)部分 試劑和儀器設(shè)備 ................................................................................................15 主要試劑 ...................................................................................................15 實(shí)驗(yàn)儀器 ...............................................................................................15 發(fā)光粉的制備 ...............................................................................15 實(shí)驗(yàn)基本步驟 ...........................................................................................15 樣品測試 .....................................................................................................16 結(jié)果與討論 ........................................................................................................16 物相分析 .................................................................................16　 掃描電鏡分析( SEM) ...............................................................................17 熒光光譜分析( PL) ....................................................................................18 本章小結(jié) ............................................................................................................19: EU，NA 熒光粉的制備 引言 ....................................................................................................................206 實(shí)驗(yàn)部分 ......................................................................................................20 樣 品 測 試 ..................................................................................................20 結(jié)果與討論 ........................................................................................................20 SrMoO4: Eu，Na 物相分析 .....................................................................20 樣品的形貌分析(SEM) ...............................................................................21 SrMoO4: Eu，Na 的 激 發(fā) 光 譜 和 發(fā) 射 光 譜 ..........................................22 本章小結(jié) ............................................................................................................24 結(jié)論 ....................................................................................................................25 展望 ....................................................................................................................25參考文獻(xiàn) ..................................................................................................26致 謝 ....................................................................................................27白色發(fā)光二級管用稀土釩、鉬酸鹽紅色發(fā)光粉的固相反應(yīng)法制備研究1 緒 論 研究背景與意義白色發(fā)光二極管(WLED)是清潔、綠色、高效、長壽命的光源，是最有希望成為下一代照明用光源。 vanadate。. The 395nm monitoring emission spectra are mainly Fluorescent powder 395nm stimulate the launching and emission spectra are mainly located in 615nm 、591nm, the 615 nm emission intensity is the highest., the two peaks of the spectrum, including the launching of the 615nm shine most. The research shows that is contrary to legal system of YVO4:Eu3+、SrMoO4: Eu, and Na red powder up the fluorescent wavelength 468nm, 465 nm and the current marketoriented WLED of violet light blue chip light wavelengths, and great purity in a good flush. The two red light powder for marketoriented WLED to stimulate the demand of the wavelength of pink blossoms wet with a huge market potential use. 【KEYWORDS】White Light Emission Diode。【關(guān)鍵詞】白色發(fā)光二極管；熒光粉；釩酸鹽；鉬酸鹽，固相反應(yīng)法. 3AbstractWhite Light Emission Diode is a new generation of the green light source. It has energysaving and pollutionfree, long life and other advantages. It is the most promising source for the next generation lighting uses. The light powder is now an important part of marketoriente