【摘要】： Mn~(2+)摻雜的ZnO-B_2O_3-SiO_2(ZBSM)體系玻璃薄膜是一種新型的光信息存儲材料,其具有性能穩(wěn)定、易于加工等特點,并且在存儲密度、讀寫速率等方面優(yōu)勢明顯。在信息存儲領(lǐng)域有著十分廣闊的應用前景。是當今光電信息材料領(lǐng)域研究的熱點和重點之一。 采用硝酸鋅(Zn(NO_3)_2·6H_2O)、正硅酸乙酯(C_8H_(20)O_4Si)、硼酸(H_3BO_3)為基質(zhì)原料,摻雜光活性金屬Mn~(2+)采用溶膠-凝膠法制備了具有光存儲性能的ZBSM體系玻璃薄膜。并研究了激活離子、基質(zhì)組成比例等不同因素對ZBSM體系玻璃薄膜光存儲性能的影響。 通過實驗可以得到ZnO-B_2O_3-SiO_2體系光存儲玻璃薄膜的制備工藝如下:基質(zhì)原料以及所摻雜的光活性離子的比例為:Zn(NO_3)_2·6H_2O:H_3BO_3:C_8H_(20)O_4Si: Mn(CH_3COO)_2·4H_2O(摩爾比)=6:2:2:0.1;控制水解的pH值為1.0,在60℃的水浴條件下水解大約24h,在60℃的烘箱內(nèi)干燥約19h。采用浸漬提拉法進行鍍膜處理,根據(jù)所要求薄膜厚度的不同選擇不同的鍍膜次數(shù),但是一般不超過5次。試樣最終的熱處理溫度在650℃左右。 利用熒光光譜和熱釋光譜兩種分析測試手段,可以得出ZBSM體系光存儲玻璃薄膜在光存儲性能方面主要具有以下幾個特點:材料的熒光和光激勵余輝同樣是來源于Mn~(2+)的~4T_1(~4G)→~6A_(1g)(~6S)躍遷;材料內(nèi)部分別存在著兩個能級深度為0.80eV和1.02eV的缺陷陷阱中心。其中利用能級深度為1.02eV的陷阱可以實現(xiàn)對電子的穩(wěn)定存儲。 通過對同體系ZBSM微晶玻璃的制備和結(jié)構(gòu)性能研究,進一步對比分析了ZBSM體系光存儲玻璃薄膜的光激勵發(fā)光性能和結(jié)構(gòu)特點。
[Abstract]:Mn~ (2) doped ZnO-B_2O_3-SiO_2 (ZBSM) glass film is a new type of optical information storage material. It has the characteristics of stable performance, easy processing, and has obvious advantages in storage density, reading and writing rate and so on. In the field of information storage has a very broad application prospects. It is one of the hotspots and emphases in the field of optoelectronic information materials. Using zinc nitrate (Zn (NO_3 (2 6H_2O), ethyl orthosilicate (C _ S _ (8) H _ (20) O_4Si) and boric acid (H_3BO_3) as raw materials, doped photoactive metal (Mn~ (2), the glass films of ZBSM system with optical storage properties were prepared by sol-gel method. The effects of different factors, such as activation ion and matrix ratio, on the optical storage properties of ZBSM glass films were studied. The preparation process of optical storage glass thin films in ZnO-B_2O_3-SiO_2 system can be obtained as follows: the ratio of matrix raw material and doped photoactive ions is: Zn (NO_3) 26H _ 2O: C _ 8H _ (20) O _ (4Si): Mn (CH_3COO) _ 2 4H_2O (molar ratio) 6: 2: 20.1; pH value of hydrolysis is 1.0, and water is in water at 60 鈩，

本文編號：2213417