多孔硅中八羟基喹啉铝的光致发光  

Photoluminescence of 8-Hydroxyquinoline Aluminum in Porous Silicon

作　　者：薛清华[1] 徐春祥[1] 钟嫄[1] 罗宗南[1] 崔一平[1] 

机构地区：[1]东南大学电子工程系,江苏南京210096

出　　处：《光电子．激光》2001年第8期845-847,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目 ( 6 0 0 76 0 0 2 );江苏省自然科学基金资助项目 ( BK990 0 4)

摘　　要：通过两种方法将有机小分子八羟基喹啉铝 (Alq3)嵌入到用阳极腐蚀法制备的多孔硅中。一是浸泡法 ,将新鲜的多孔硅浸泡于 Alq3的氯仿溶液中 ,通过物理吸附使 Alq3嵌入到多孔硅的纳米孔中 ;二是反应法 ,先将多孔硅浸泡于硫酸铝的水溶液中 ,再在其中加入八羟基喹啉的甲醇溶液 ,使它们在多孔硅的纳米孔中反应产生 Alq3。两种方法得到的 Alq3的光致发光光谱均较硅片上蒸镀的 Alq3的光致发光光谱有所蓝移 ,半高宽有所减小。Two methods were used to assemble organic molecule 8 hydroxyquinoline aluminum (Alq 3) into the pores of porous silicon (PS) which was prepared by anodization.In the first way,Alq 3 was impregnated into the pores by physical adsorption when a fresh PS sample was immerged into chloroform solution of Alq 3.In the second way,PS was immerged into aqueous solution of Al 2(SO 4) 3,Alq 3 was obtained in the pores by chemical reaction when methanol solution of 8 hydroxyquinoline was slowly injected.The photoluminescent (PL) spectra showed blue shift and narrower bandwidth relative to the PL of Alq 3 film on silicon wafer.PL intensity of the reaction sample was much higher than that of the impregnation sample.These results indicated that PL spectrum of Alq 3 was confined in the prores and the first way was more effective than the second one.

关 键 词：多孔硅 光致发光 八羟基喹啉 

分 类 号：TN383.2[电子电信—物理电子学]