The main contents and important results of this paper are as following : strong blue cooperative up - conversion luminescence is observed in various host materials single doped yb3 + ions with naked eyes at room temperature under 980nm excitation . moreover there exist rich emission lines and peculiar ratio of luminescence intensity in all samples . intense green and blue up - converted luminescence is observed in yb3 + - ho3 + co - doped pbf2 - znf2 based materials with 930 nm diode light excitation at room temperature 其主要內(nèi)容與得到的結(jié)論如下: ( 1 ) yb ~ ( 3 + )單摻雜不同基質(zhì)材料組成的氟氧化物在980nm激光激發(fā)下發(fā)射出明亮的yb ~ ( 3 + )離子的合作上轉(zhuǎn)換藍色熒光,同時這些樣品具有極為豐富的熒光發(fā)射,有著特別的色比關(guān)系。
Under visible light excitation titanic acid and titanate sodium nanotubes showed a relatively intense emission , which red shifts with the increase of excitation wavelength . under humid conditions this photoluminescence of titanic acid nanotubes was not stable . the intensity decreased , and the emission peak was at 480nm , which cannot shift with the change of excitation wavelength 鈦酸和鈦酸鈉納米管在使用可見光激發(fā)時,都能產(chǎn)生光致發(fā)光現(xiàn)象,當使用不同波長的可見光激發(fā)鈦酸和鈦酸鈉納米管時,能夠得到不同強度的發(fā)光譜帶,且發(fā)光峰的位置隨著激發(fā)光的變化發(fā)生較大范圍的移動。