1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
f
Balanced ambipolar charge carrier mobility in mixed layers for application in hybrid white organic light-emitting diodes
Rent:
Rent this article for
Access full text Article
/content/aip/journal/apl/93/7/10.1063/1.2973151
1.
1.Y. Sun, N. C. Giebink, H. Kanno, B. Ma, M. E. Thompson, and S. R. Forrest, Nature (London) 440, 908 (2006).
http://dx.doi.org/10.1038/nature04645
2.
2.A. Hunze, R. Krause, S. Seidel, O. Weiss, F. Kozlowski, G. Schmid, J. Meyer, M. Kroeger, H. H. Johannes, W. Kowalsky, and T. Dobbertin, Proc. SPIE 6555, 66550X1 (2007).
3.
3.G. Schwartz, S. Reineke, K. Walzer, and K. Leo, Appl. Phys. Lett. 92, 053311 (2008).
http://dx.doi.org/10.1063/1.2836772
4.
4.G. Schwartz, K. Fehse, M. Pfeiffer, K. Walzer, and K. Leo, Appl. Phys. Lett. 89, 083509 (2006).
http://dx.doi.org/10.1063/1.2338588
5.
5.P. C. Chen, W. Xie, J. Li, T. Guan, Y. Duan, Y. Zhao, S. Liu, C. Ma, L. Zhang, and B. Li, Appl. Phys. Lett. 91, 023505 (2007).
http://dx.doi.org/10.1063/1.2757096
6.
6.J. Blochwitz, M. Pfeiffer, T. Fritz, and K. Leo, Appl. Phys. Lett. 73, 729 (1998).
http://dx.doi.org/10.1063/1.121982
7.
7.M. Pfeiffer, A. Beyer, T. Fritz, and K. Leo, Appl. Phys. Lett. 73, 3202 (1998).
http://dx.doi.org/10.1063/1.122718
8.
8.P. W. M. Blom, C. Tanase, D. M. de Leeuw, and R. Coehorn, Appl. Phys. Lett. 86, 092105 (2005).
http://dx.doi.org/10.1063/1.1868865
9.
9.T. -Y. Chu and O. -K. Song, Appl. Phys. Lett. 90, 203512 (2007).
http://dx.doi.org/10.1063/1.2741055
10.
10.P. N. Murgatroyd, J. Phys. D 3, 151 (1970).
http://dx.doi.org/10.1088/0022-3727/3/2/308
11.
11.W. -Y. Hung, T. -H. Ke, Y. -T. Lin, C. -C. Wu, T. -H. Hung, T. -C. Chao, K. -T. Wong, and C. -I. Wu, Appl. Phys. Lett. 88, 064102 (2006).
http://dx.doi.org/10.1063/1.2172708
12.
12.A. Opitz, M. Bronner, and W. Brütting, J. Appl. Phys. 101, 063709 (2007).
http://dx.doi.org/10.1063/1.2436836
13.
13.B. P. Rand, J. Xue, S. Uchida, and S. R. Forrest, J. Appl. Phys. 98, 124902 (2005).
http://dx.doi.org/10.1063/1.2142072
14.
14.S. -W. Liu, J. -H. Lee, C. -C. Lee, C. -T. Chen, and J. -K. Wang, Appl. Phys. Lett. 91, 142106 (2007).
http://dx.doi.org/10.1063/1.2787890
15.
15.H. Bässler, Phys. Status Solidi B 175, 15 (1993).
http://dx.doi.org/10.1002/pssb.2221750102
16.
journal-id:
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/7/10.1063/1.2973151
Loading
View: Figures

Figures

Image of FIG. 1.

Click to view

FIG. 1.

Current density-voltage characteristics of (hole-only) devices with 200 nm -NPD: -layer (-NPD content given in percentage) and corresponding SCLC fits assuming field enhanced or trap-limited mobility, respectively.

Image of FIG. 2.

Click to view

FIG. 2.

Charge carrier mobilities vs electric field of -NPD: blend layers (-NPD content given in percentage), determined by SCLC (lines) and TOF (symbols).

Image of FIG. 3.

Click to view

FIG. 3.

Hole (closed symbols) and electron (open symbols) mobilities determined by SCLC vs -NPD and content at zero field and at 250 kV/cm. The lines are guides to the eye.

Image of FIG. 4.

Click to view

FIG. 4.

Characteristics of hybrid OLEDs with 5 nm -NPD and blend ILs of different mix ratios between the fl-EML and ph-EML compared to a device without IL. (a) Current-voltage. The inset schematically shows the general OLED stack. (b) External quantum efficiency vs current density. (c) EL spectra measured at .

Loading

Article metrics loading...

/content/aip/journal/apl/93/7/10.1063/1.2973151
2008-08-20
2014-04-16

Abstract

We investigate the electron and hole mobility in mixed layers of -di(naphthalen-1-yl)--diphenyl-benzidine and bis(2-methyl-8-quinolinato)-4-phenylphenolate aluminum with different mix ratios, using both space-charge limited currents of single-carrier devices with electrically dopedcharge transport layers and time-of-flight measurements. Both experimental methods yield consistent results. The 1:1 blend shows balanced ambipolar charge carrier transport, which is advantageous for the application as exciton blocking interlayer in hybrid white organic light-emitting diodes: The electroluminescence spectrum is rather stable against changes in interlayer thickness and driving current. Moreover, the external quantum efficiency is enhanced by a factor of 2.5 as compared to a device without interlayer.

Loading

Full text loading...

/deliver/fulltext/aip/journal/apl/93/7/1.2973151.html;jsessionid=1b6yrzwwzbkat.x-aip-live-01?itemId=/content/aip/journal/apl/93/7/10.1063/1.2973151&mimeType=html&fmt=ahah&containerItemId=content/aip/journal/apl
true
true
This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Balanced ambipolar charge carrier mobility in mixed layers for application in hybrid white organic light-emitting diodes
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/7/10.1063/1.2973151
10.1063/1.2973151
SEARCH_EXPAND_ITEM