کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1267446 | 972346 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Efficient electron transport in 4,4′-bis[N-(1-napthyl)-N-phenyl-amino] biphenyl and the applications in white organic light emitting devices Efficient electron transport in 4,4′-bis[N-(1-napthyl)-N-phenyl-amino] biphenyl and the applications in white organic light emitting devices](/preview/png/1267446.png)
The electron transport capability of 4,4′-bis[N-(1-napthyl)-N-phenyl-amino] biphenyl (α-NPD) was investigated by fundamental physical measurements named as current–voltage (I–V) electrical property evaluation and displacement current measurement (DCM). In electron-dominated devices, the I–V characteristics of α-NPD were similar as that of (8-hydroxyquinolino) aluminum (Alq3) owing to their same order of electron mobilities. The interface of Al/LiF and α-NPD was proven to be an Ohmic contact through the evaluation of I–V characteristics at low bias regime (<3 V). And an electron injection barrier, 0.21 eV, at Al/LiF/α-NPD was obtained by extrapolating the temperature dependent I–V curves. The electron transport behavior in α-NPD film was further confirmed by DCM evaluations. Furthermore, an efficient white organic light emission device was successfully fabricated by using α-NPD as hole transport layer and electron transport layer, respectively.
Figure optionsDownload as PowerPoint slideHighlights
► The ambipolar charge transport properties of α-NPD was investigated.
► The electron injection and barrier height was evaluated by I–V electrical characteristics measurement.
► The electron transport in α-NPD film was confirmed by a displacement current measurement.
► A white OLED was successfully fabricated using HT and EL capabilities of α-NPD.
Journal: Organic Electronics - Volume 14, Issue 3, March 2013, Pages 1015–1020