# Supplementary Material (ESI) for New Journal of Chemistry
# This journal is © The Royal Society of Chemistry and
# The Centre National de la Recherche Scientifique, 2002
High Efficiency Single Dopant White Electrophosphorescent
Light Emitting Diodes
Vadim Adamovich1, Jason Brooks1, Arnold Tamayo1, Alex M. Alexander1, Peter I.
Djurovich1, Brian W. D’Andrade3, Chihaya Adachi2, Stephen R. Forrest3* and Mark E.
Thompson1*
1
2
University of Southern California, Department of Chemistry, Los Angeles, CA 90089
Department of Photonics Materials Science, Chitose Institute of Science & Technology,
758-65 Bibi, Chitose 066-8655, Japan
3
Center for Photonics and Optoelectronic Materials (POEM), Princeton Materials Institute
(PMI), Department of Electrical Engineering, Princeton University, Princeton, NJ 08544
Supplementary Materials
Absorption and emission spectra for CBP
N
N
Emission/absorption Intensity (arb. units)
CBP
1.0
Absorbance
Emission
0.8
Lifetime at 460 nm > 1 second
M.A. Baldo, and S. R. Forrest,
Phys Rev. B, 2000, 62, 10958-10966
0.6
0.4
0.2
0.0
250
300
350
400
450
500
550
Wavelength, nm
600
650
Absorption and emission spectra and luminescent decay curves for mCP
N
N
1.0
absorbance
emission
0.8
luminescence lifetime
at 440 nm = 8 seconds
0.6
0.4
0.2
0.0
300
350
400
450
500
550
Wavelength (nm)
raw data
biexponential fit
100000
Intenstity at 440 nm (# counts)
Emission/absorbance Intensity (arb. units)
mCP
Chi^2/DoF
= 62479.26432
R^2
= 0.99986
80000
A1
t1
A2
t2
60000
4
4.1 x 10
1.3 sec.
4
8.5 x 10
8.2 sec.
40000
20000
0
10
20
30
40
Time (seconds)
50
60
N
5
luminescence lifetime
at 414 nm = 15 microseconds
N
Ir
3
4
absorbance
PL at 77 K
Irppz
3
2
1
0
300
400
Wavelength (nm)
500
600
Emission Intensity (a.u.)
6
4
-1
-1
(Molar Absorbance (10 M cm )
Absorption and emission spectra for Ir(III) fac-tris(1-phenylpyrazole) (Irppz)
The photoluminescence spectra for Pt complex 3 doped into CBP. The doping levels for
each spectrum are indicated in legend to each plot.
N
F
O
Pt
O
F
3
FPt4 in CBP PL Emission
5%
11%
15%
20%
1.0
PL emission
0.8
0.6
0.4
0.2
0.0
350 400 450 500 550 600 650 700 750 800
Wavelength, nm