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[求助]
稀土元素Er熒光圖 已有3人參與
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想問(wèn)一下,做熒光的大俠,對(duì)于鉺來(lái)說(shuō)它的發(fā)射峰的位置到底是在哪里?因?yàn)榭戳艘恍┪墨I(xiàn),對(duì)于它的發(fā)射峰總是在變來(lái)變?nèi)サ模?br />
在一個(gè)范圍之內(nèi),一種元素的發(fā)射峰不應(yīng)該是固定不變的嗎?離子的發(fā)射峰和它所處的基質(zhì)有關(guān)系嗎?熒光不是是電子躍遷產(chǎn)生的嗎?按這個(gè)道理 應(yīng)該和基質(zhì)沒(méi)有關(guān)系啊、 |

木蟲 (著名寫手)
三無(wú)小小鳥

金蟲 (小有名氣)

金蟲 (小有名氣)



木蟲 (著名寫手)
三無(wú)小小鳥


木蟲 (著名寫手)
三無(wú)小小鳥
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980nm激發(fā)屬于共振激發(fā)(resonance excitation),很多工作用非共振波長(zhǎng)來(lái)激發(fā)。你可以去搜一下Luminescence-center-mediated excitation as the dominant Er sensitization mechanism in Er-doped silicon-rich SiO2 films, PR B, 76, 195419 (2007). 其中第4頁(yè)明確講到了Er的兩個(gè)放光帶: In addition to the LC- and NC-related emission bands observed in Fig. 2, an Er3+-related signal is observed at 981 nm for XSE samples, corresponding to the transition from the second excited state to the ground state of Er3+ 4I11/2→4I15/2. Figure 3 shows the near-infrared spectra for the XSE samples under the same excitation conditions. A clear Er3+-related emission spectrum peaking at 1535 nm is observed, corresponding to the transition from the first excited state to the ground state of Er3+ 4I13/2→4I15/2. |

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