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1 ，图中可以看出，DCJTB的浓度越大，器件的电流密度越小。这证明了DCJTB的载流子俘获效应。因为高浓度的DCJTB会产生更多的trapping sites，从而俘获更多的电子，导致器件的电流密度减小。 2，DCJTB的掺杂浓度越大，CIE随亮度的shift越明显，这是由于高DCJTB掺杂浓度会使电子更多的被DCJTB俘获，从而导致更强的红光发射。当没有DCJTB掺杂的器件，CIE几乎不随亮度变化而变化。 3 对于LED来讲，常用的照明范围定义在10000-1000000. |
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zou-yanhua
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zasimi(金币+20, 翻译EPI+1): 谢谢您的应助 2011-08-22 21:02:53
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1, It can be illustrated from the graph that the current density of the device was smaller as the concentration of DCJTB got higher, which proved the carrier capture effect of DCJTB. DCJTB with high concentration would produce more trapping sites, thus capture more electrons, resulting in the decrease of the current density. 2, The shift of the CIE along with the brightness was more obvious as the doping density of the DCJTB was higher. This may be because the high doping density of the DCJTB made more electrons be captured, which result in stronger Red emissions. The CIE almost did not change along with the brightness without doping DCJTB. 3, As to the LED, the common illumination range is of 10000-1000000. |
2楼2011-08-22 13:15:30
zou-yanhua
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| 2, The shift of the CIE along with the brightness was more obvious as the doping density of the DCJTB was higher. This may be because the high doping density of the DCJTB made more electrons be captured, which resulted in stronger Red emissions. The CIE almost did not change along with the brightness without doping DCJTB. |
3楼2011-08-22 13:21:43
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