Universidad de Castilla-La Mancha. Institute of Nanoscience, … · 2017-02-27 · New...
Transcript of Universidad de Castilla-La Mancha. Institute of Nanoscience, … · 2017-02-27 · New...
New Acceptor-π-Porphyrin-π-Acceptor Systems for Solution-Processed Small
Molecule Organic Solar Cells
Susana Arrechea,a Agustín Molina-Ontoria,b Ana Aljarilla,a Pilar de la Cruz,a
Fernando Langaa,* and Luis Echegoyenb,*
a Universidad de Castilla-La Mancha. Institute of Nanoscience, Nanotechnology and
Molecular Materials (INAMOL), Campus de la Fábrica de Armas, Toledo, Spain; Fax:
34 9252 68840; Tel: 34 9252 68843; E-mail: [email protected]
bDepartment of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA.;
Tel: 915-747-7573; E-mail: [email protected]
Table of contents
1. Experimental details S2
2. 1H-NMR, 13C-NMR, FT-IR and MALDI-TOF o MS spectra S5
3. Thermogravimetric analysis S21
4. UV-Visible and emission spectroscopies S22
5. Square Wave plots S24
6. EQE and IV characteristic for 1a:PC71BM (1:2) S26
2
1. Experimental details
Synthetic procedures were carried out under inert argon atmosphere, in dry
solvent unless otherwise noted. All reagents and solvents were reagent grade and
were used without further purification. Chromatographic purifications were
performed using silica gel 60 SDS (particle size 0.040-0.063 mm). Analytical thin-
layer chromatography was performed using Merck TLC silica gel 60 F254. 1H-NMR
spectra were obtained on Bruker TopSpin AV-400 (400 MHz) spectrometer.
Chemical shifts are reported in parts per million (ppm) relative to the solvent
residual peak (CDCl3, 7.27 ppm). 13C-NMR chemical shifts () are reported relative
to the solvent residual peak (CDCl3, 77.0 ppm). UV-Vis measurements were carried
out on a Shimadzu UV 3600 spectrophotometer. For extinction coefficient
determination, solutions of different concentration were prepared in CH2Cl2 (HPLC
grade) with absorption between 0.1-1 of absorbance using a 1 cm UV cuvette. The
emission measurements were carried out on Cary Eclipse fluorescence
spectrophotometer. Mass spectra (MALDI-TOF) were recorded on a VOYAGER
DETM STR mass spectrometer using dithranol as matrix. Melting points are
uncorrected.
The molecular geometries and frontier molecular orbitals of these new dyes have
been optimized by density functional theory (DFT) calculations at the B3LYP/6-31G*
level.1
1 Gaussian 03, Revision D.02, Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G.
E.; Robb, M. A.; Cheeseman, J. R.; Montgomery Jr., J. A.; Vreven, T.; Kudin, K. N.;
Burant, J. C.; Millam, J. M.; Iyengar, S. S.; Tomasi, J.; Barone, V.; Mennucci, B.; Cossi,
M.; Scalmani, G.; Rega, N.; Petersson, G. A.; Nakatsuji, H.; Hada, M.; Ehara, M.;
Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao, O.;
Nakai, H.; Klene, M.; Li, X.; Knox, J. E.; Hratchian, H. P.; Cross, J. B.; Bakken, V.;
Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.;
Cammi, R.; Pomelli, C.; Ochterski, J. W.; Ayala, P. Y.; Morokuma, K.; Voth, G. A.;
Salvador, P.; Dannenberg, J. J.; Zakrzewski, V. G.; Dapprich, S.; Daniels, A. D.; Strain,
M. C.; Farkas, O.; Malick, D. K.; Rabuck, A. D.; Raghavachari, K.; Foresman, J. B.;
Ortiz, J. V.; Cui, Q.; Baboul, A. G.; Clifford, S.; Cioslowski, J.; Stefanov, B. B.; Liu,
G.; Liashenko, A.; Piskorz, P.; Komaromi, I.; Martin, R. L.; Fox, D. J.; Keith, T.; Al-
Laham, M. A.; Peng, C. Y.; Nanayakkara, A.; Challacombe, M.; Gill, P. M. W.;
3
Cyclic voltammetry was performed in ODCB-acetonitrile (4:1) solutions.
Tetrabutylammonium perchlorate (0.1 M as supporting electrolyte) were
purchased from Acros and used without purification. Solutions were deoxygenated
by argon bubbling prior to each experiment which was run under argon
atmosphere. Experiments were done in a one-compartment cell equipped with a
platinum working microelectrode ( = 2 mm) and a platinum wire counter
electrode. An Ag/AgNO3 (0.01 M in CH3CN) electrode was used as reference and
checked against the ferrocene/ferrocenium couple (Fc/Fc+) before and after each
experiment.
The thermal stability was evaluated by TGA on a Mettler Toledo TGA/DSC Starte
System under nitrogen, with a heating rate of 10 ºC/min. Heating of crystalline
samples leads to melting of the solids, but no recrystallization was observed.
SM BHJ device preparation
PC61BM and PC71BM were purchased from American Dye Source and used as
recieved.
The ITO-coated glasses (Delta technologies, 5-15 Ω) were pre-cleaned stepwise by
ultracentrifugation 15 minutes in detergent, deionized water, methanol, acetone
and iso-propanol and then by a 30 minutes UV-ozone treatment. A thin layer of
PEDOT:PSS (Clevios P VP AI 4083, 5000 rpm, 30 seconds, 30 nm) was spin-
coated onto the ITO and baked at 150 ºC for 15 minutes in air. Subsequently, the
active layer (1a-b:PC61BM, 30 mg/mL) with varying weight ratios (1:4, 1:2 and
1:1) was spin-coated at 1500 rpm from chlorobenzene solutions. 1a or 1b, 1a-
b:PC71BM (1:2, 30 mg/mL) was spin-coated at 1500 rpm. Then the devices were
transferred to a N2 filled glove box (<0.1 ppm O2 and < 0.1 ppm H2O) for further
processing. The photoactive layer was annealed at 80 ºC for 10 minutes followed
by thermal evaporation of 20 nm of calcium and 80 nm of aluminum (1 x 10-6
mbar) with a shadow mask of 0.4 cm2. The photovoltaic properties were measured
under 1 sun, AM1.5G (air mass 1.5 global) spectrum from a solar simulator (Photo
Johnson, B.; Chen, W.; Wong, M. W.; Gonzalez, C.; Pople, J. A. Gaussian, Inc.,
Wallingford CT, 2004.
4
Emission Tech CT100) at 100 mW/cm2). The Jsc–Voc characteristics were
recorded with a Keithley 2420 source unit.
5
2. 1H NMR, 13C NMR, FT-IR and MALDI-TOF MS spectra
Figure S1. 1H NMR spectrum (400 MHz, CDCl3) of 3a.
Figure S2. 13C NMR spectrum (100 MHz, CDCl3) of 3a.
2345678910111213 ppm
1.342100
1.349200
1.358300
1.366100
1.565300
1.583200
2.194800
2.531400
2.553000
2.570800
2.899000
2.919100
2.938800
9.904600
6.7
6.8
5.3
2.5
2.0
2.1
1.0
6
Figure S3. 1H NMR spectrum (400 MHz, CDCl3) of 3b.
Figure S4. 13C NMR spectrum (100 MHz, CDCl3) of 3b.
1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.510.0 ppm
0.904
0.915
1.035
1.071
1.090
1.259
1.333
1.399
1.456
1.472
1.550
1.582
2.471
2.490
2.506
2.567
2.585
2.604
2.616
2.636
2.655
2.824
2.842
2.861
6.853
6.893
7.171
7.210
9.981
12.8
1
32.0
0
2.2
8
4.0
9
1.8
4
0.9
4
0.9
0
1.0
0
180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 ppm
14.051
14.087
22.543
22.596
26.404
27.112
27.911
29.324
29.759
31.003
31.130
31.517
31.544
31.565
32.257
75.458
118.772
123.091
134.772
140.994
141.569
141.792
146.567
147.727
152.974
181.920
7
-2-111 10 9 8 7 6 5 4 3 2 1 0 ppm
-3.042
1.875
2.688
7.352
8.906
8.917
9.348
9.359
10.247
1.8
8
12.7
6
6.3
0
4.2
2
3.8
7
4.0
0
2.1
0
HN
N
N
NH
Figure S5. 1H NMR spectrum (400 MHz, CDCl3) of 5,15-Dimesitylporphyrin.
Figure S6. 13C NMR spectrum (100 MHz, CDCl3) of 5,15-Dimesitylporphyrin.
2030405060708090100110120130140 ppm
21.518
21.723
104.568
117.288
127.856
130.007
131.803
137.627
137.846
139.486
8
1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.510.0 ppm
1.854
2.693
7.270
7.351
8.988
8.999
9.406
9.417
10.269
11.5
0
5.6
7
3.9
0
3.9
1
4.0
0
1.8
9N
N
N
N
Zn
Figure S7. 1H NMR spectrum (400 MHz, CDCl3) of [5,15-Dimesitylporphyrinato]
zinc (II).
Figure S8. 13C NMR spectrum (100 MHz, CDCl3) of [5,15-Dimesitylporphyrinato]
zinc (II).
30405060708090100110120130140150 ppm
21.490
21.662
105.506
118.234
127.685
131.258
132.117
137.503
138.781
139.318
149.412
149.832
9
N
N
N
N
Br
Br
Zn
Figure S9. 1H NMR spectrum (400 MHz, CDCl3) of [5,15-Dibromo-10,20-
dimesitylporphyrinato] zinc (II).
Figure S10. 13C NMR spectrum (100 MHz, CDCl3) of [5,15-Dibromo-10,20-
dimesitylporphyrinato] zinc (II).
10
1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.5 ppm
0.625
1.860
2.680
7.270
7.330
8.787
8.798
9.675
9.686
17.3
0
12.0
3
6.1
6
3.0
6
4.0
8
4.0
0
N
N
N
N
Zn
SiMe3
SiMe3
Figure S11. 1H NMR spectrum (400 MHz, CDCl3) of 2.
Figure S12. 13C NMR spectrum (100 MHz, CDCl3) of 2.
150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 ppm
0.344
21.480
21.514
100.635
101.497
107.369
120.911
127.725
131.453
131.679
137.641
138.359
139.047
149.947
152.099
11
1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.5 ppm
0.757
0.774
0.792
0.932
1.225
1.285
1.303
1.323
1.355
1.367
1.408
1.539
1.585
1.603
1.621
1.887
2.681
2.784
2.802
2.820
2.968
2.986
3.005
7.270
7.334
8.752
8.763
9.154
9.486
9.497
6.5
1
6.5
9
23.4
4
8.7
4
15.0
1
6.5
0
4.1
8
3.9
1
4.0
0
3.2
7
1.6
7
3.3
0NN
NN
Zn
S
C6H13C6H13
OS
C6H13C6H13
O
Figure S13. 1H NMR spectrum (400 MHz, CDCl3) of 4a.
Figure S14. 13C NMR spectrum (100 MHz, CDCl3) of 4a.
2030405060708090100110120130140150 ppm
14.019
14.129
21.515
21.592
22.628
22.656
27.461
28.663
29.413
29.673
30.886
30.917
31.586
31.763
32.328
89.536
100.094
103.129
122.003
127.837
129.360
131.182
131.898
137.324
137.876
138.116
138.995
148.219
150.082
151.631
151.699
12
S
C6H13C6H13
NN
NN
Zn
CNS
C6H13C6H13
CNNC
NC
Figure S15. 1H NMR spectrum (400 MHz, CDCl3) of 1a.
Figure S16. 13C NMR spectrum (100 MHz, CDCl3) of 1a.
102030405060708090100110120130140150 ppm
13.988
14.113
21.540
21.652
22.616
28.195
28.771
29.144
29.558
29.732
30.159
30.710
30.901
31.460
31.552
31.712
32.345
75.194
89.439
99.538
106.314
113.874
115.076
122.767
127.935
130.784
131.024
132.254
137.791
138.065
138.924
147.405
147.730
150.321
151.570
154.355
9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 ppm
0.743
0.760
0.777
0.966
1.271
1.305
1.323
1.343
1.392
1.526
1.545
1.761
1.956
2.712
2.763
2.840
7.371
7.893
8.742
8.752
9.165
6.4
5
6.9
8
23.1
1
13.1
7
4.5
3
12.4
1
5.7
3
8.4
0
4.0
1
2.0
0
4.4
1
3.4
9
13
1.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.5 ppm
1.310
1.330
1.341
1.347
1.357
1.386
1.396
1.403
1.441
1.458
1.466
1.486
1.555
1.607
1.626
1.864
1.889
1.914
1.939
2.636
2.653
2.675
2.700
2.727
2.748
2.768
2.774
2.795
2.814
3.026
3.046
3.064
7.061
7.099
7.269
7.303
7.325
7.342
8.722
8.733
9.548
9.559
5.9
1
16.8
1
61.4
9
14.6
3
10.6
1
7.8
5
3.7
7
2.1
1
5.6
5
4.0
0
5.8
9
Figure S17. 1H NMR spectrum (400 MHz, CDCl3) of 4b.
Figure S18. 13C NMR spectrum (100 MHz, CDCl3) of 4b.
180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 ppm
14.129
14.176
21.478
21.533
22.578
22.660
26.443
27.110
27.494
29.268
29.342
29.352
29.451
29.706
30.940
31.190
31.542
31.597
31.662
31.800
32.254
90.671
100.848
101.166
118.917
118.958
121.511
123.465
127.719
131.059
131.473
134.583
137.288
137.672
138.325
139.032
141.946
142.744
146.942
148.484
149.683
151.593
153.154
181.733
14
9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 ppm
1.190
1.208
1.228
1.235
1.245
1.264
1.288
1.296
1.304
1.335
1.393
1.402
1.420
1.527
1.545
1.563
1.580
1.853
2.549
2.569
2.594
2.621
2.686
2.705
2.723
2.950
2.968
6.945
6.984
7.193
7.232
7.278
7.687
8.678
8.689
9.460
9.471
6.5
9
18.2
0
54.5
5
8.2
7
13.1
1
13.5
1
4.4
9
3.7
3
2.0
0
2.7
5
4.2
7
1.8
9
3.9
6
3.9
7
S
C6H13 C6H13
S
C6H13 C6H13
NN
NN
Zn S
C6H13C6H13
S
C6H13C6H13
CNNC
NCCN
Figure S19. 1H NMR spectrum (400 MHz, CDCl3) of 1b.
Figure S20. 13C NMR spectrum (100 MHz, CDCl3) of 1b.
2030405060708090100110120130140150 ppm
22.562
22.620
22.631
22.669
26.819
27.479
27.824
29.287
29.318
29.459
29.734
30.935
31.004
31.499
31.557
31.605
31.791
32.170
73.138
90.762
101.192
101.404
114.172
115.592
118.217
120.076
121.720
125.392
127.767
128.297
131.128
131.617
137.220
137.784
138.167
139.009
141.615
144.087
147.248
148.836
149.121
149.762
151.636
155.911
15
3500 3000 2500 2000 1500 1000
2173
2854
2919
1650
Tra
nsm
itta
nce
Wavenumber / cm-1
Figure S21. FT-IR spectrum of compound 4a.
4000 3500 3000 2500 2000 1500 1000
1650
2854
2919
Tra
nsm
itta
nce
Wavenumbers /cm-1
Figure S22. FT-IR spectrum of compound 4b.
16
3500 3000 2500 2000 1500 1000
1560
2852
2921
2223
2156T
ran
sm
itta
nce
Wavenumber / cm-1
Figure S23. FT-IR spectrum of compound 1a.
3500 3000 2500 2000 1500 1000
1552
2217
2856
2923
Tra
nsm
itta
nce
Wavenumber / cm-1
Figure S24. FT-IR spectrum of compound 1b.
.
17
Figure S25. MALDI-MS spectrum of compound 4a (Matrix: Dithranol).
219.0 475.4 731.8 988.2 1244.6 1501.0
Mass (m/z)
0
5174.2
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>AdvBC(32,0.5,0.1)=>BC=>NR(2.00)=>MC[BP = 1213.9, 5174]
1213.8485
1215.8350
227.0856
1217.8322
1219.8432
304.3328225.0775 1294.8025
239.0742332.4017 668.7840 1290.8050
1203 1208 1213 1218 1223 1228
Mass (m/z)
0
5174.2
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>AdvBC(32,0.5,0.1)=>BC=>NR(2.00)=>MC[BP = 1213.9, 5174]
1213.8485
1214.8385
1212.8313
1215.8350
1216.8300
1217.8322
1218.8441
1219.8432
1220.8530
18
Figure S26. MALDI-MS spectrum of compound 4b (Matrix: Dithranol).
219.0 675.4 1131.8 1588.2 2044.6 2501.0
Mass (m/z)
0
1.5E+4
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>BC=>AdvBC(32,0.5,0.1)=>NR(2.00)=>BC=>MC[BP = 227.1, 15212]
227.0709
1767.0716
1769.0501225.0551
253.0522
1771.0094
239.0658
242.01701773.0001477.1606
249.01211492.7869 1846.9578
247.0252 1214.6401465.1602 696.69691764.0571
1752.0 1759.4 1766.8 1774.2 1781.6 1789.0
Mass (m/z)
0
1.3E+4
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>BC=>AdvBC(32,0.5,0.1)=>NR(2.00)=>BC=>MC[BP = 227.1, 15212]
1767.0716
1768.06381766.0862
1769.0501
1765.0923
1770.0395
1771.0094
1772.0225
1773.0001
1773.9424
1764.0571
19
Figure S27. MALDI-MS spectrum of compound 1a (Matrix: Dithranol).
219.0 775.4 1331.8 1888.2 2444.6 3001.0
Mass (m/z)
0
8132.3
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>NR(1.00)=>BC=>MC[BP = 227.1, 8132]
227.0706
1310.7982
253.0846
1313.7500239.0742
311.3001668.6991430.4138
242.0540 640.6737477.1787
460.1171264.0184 697.7461 933.0082
1301.0 1306.4 1311.8 1317.2 1322.6 1328.0
Mass (m/z)
0
3205.2
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>NR(1.00)=>BC=>MC[BP = 227.1, 8132]
1310.7982
1309.8026
1308.8173
1311.7884
1312.7648
1313.7500
1314.7669
1315.7697
20
Figure S28. MALDI-MS spectrum of compound 1b (Matrix: Dithranol).
219.0 675.4 1131.8 1588.2 2044.6 2501.0
Mass (m /z)
0
3135.5
0
10
20
30
40
50
60
70
80
90
100
% Inte
nsity
Voyager Spec #1=>NR(1.00)=>BC=>AdvBC(32,0.5,0.1)=>MC[BP = 1766.9, 3135]
1767.0188
1768.9655
227.0699
1771.9359225.0592
242.2479
1774.0295253.1001
1488.7857323.0891
1756.0 1761.6 1767.2 1772.8 1778.4 1784.0
Mass (m/z)
0
3135.5
0
10
20
30
40
50
60
70
80
90
100
% I
nte
ns
ity
Voyager Spec #1=>NR(1.00)=>BC=>AdvBC(32,0.5,0.1)=>MC[BP = 1766.9, 3135]
1767.0188
1768.0294
1768.9655
1766.0422
1769.9983
1765.0705
1770.9569
1771.9359
1772.9963
1774.0295
21
3. Thermogravimetric analysis
200 400 600 800 1000
40
50
60
70
80
90
100
110
T = 369 ºC
We
igh
t / %
T / ºC
1a
200 400 600 800 1000
20
30
40
50
60
70
80
90
100
110
T = 374 ºC
We
igh
t / %
T / ºC
1b
Figure S29. Thermogravimetric analysis of 1a and 1b.
22
4. UV-Visible and emission spectroscopies
400 500 600 700 800 900
0,0
0,2
0,4
0,6
0,8
1,0
Ab
so
rban
ce / a
. u
.
Wavenumber / nm
2
4a
1a
Figure S30. Normalized UV-Vis absorption spectra of compounds 1a and precursors 2, 4a in dichloromethane.
400 500 600 700 800 900
0,0
0,2
0,4
0,6
0,8
1,0
Ab
so
rban
ce / a
. u
.
Wavenumber / nm
2
4b
1b
Figure S31. Normalized UV-Vis absorption spectra of compounds 1b and precursors 2 and 4b in dichloromethane.
23
400 500 600 700 800 900
0,0
0,2
0,4
0,6
0,8
1,0
Ab
so
rban
ce / a
. u
.
Wavenumber / nm
1a
1b
Figure S32. Normalized absorption spectra of 1a (--) and 1b () in dichloromethane solution (10-5 M).
5.
Figure S33. Emission spectra of compound 1b and 4b in dichloromethane (10-5 M).
600 650 700 750 800 850 900
0
100
200
300
400
500
600
Inte
nsity / a
.u.
wavelength / nm
4b
1b exc
= 486
1b exc
= 540
24
6. Square Wave plots
Compound 2TV Compound 2
Compound 1a Compound 1b
Figure S34. Cyclic Voltammetry of compound 1a-b and 2TV and 2 (referred to
Fc/Fc+).
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2
-1.0x10-5
0.0
1.0x10-5
2.0x10-5
3.0x10-5
4.0x10-5
5.0x10-5
I/m
A
E/V
2TV
-0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2
-6.0x10-6
-4.0x10-6
-2.0x10-6
0.0
2.0x10-6
4.0x10-6
6.0x10-6
8.0x10-6
1.0x10-5
1.2x10-5
1.4x10-5
I/m
A
E/V
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2
-8.0x10-6
-6.0x10-6
-4.0x10-6
-2.0x10-6
0.0
2.0x10-6
4.0x10-6
6.0x10-6
8.0x10-6
1.0x10-5
1.2x10-5
I/m
A
E/V
1a
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
-2.0x10-6
0.0
2.0x10-6
4.0x10-6
6.0x10-6
8.0x10-6
I/m
A
E/V
1b
25
Compound 2TV
Compound 2
Compound 1a Compound 1b
Figure S35. Cyclic Voltammetry of compound 1a and 1b and the precursors 2TV
and 2 (referred to Fc/Fc+).
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2
0.0
1.0x10-5
2.0x10-5
I/m
A
E/V
2TV
-0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0
0.0
2.0x10-6
4.0x10-6
6.0x10-6
8.0x10-6
1.0x10-5
1.2x10-5
1.4x10-5
1.6x10-5
I/m
A
E/V
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
0.0
2.0x10-6
4.0x10-6
6.0x10-6
8.0x10-6
1.0x10-5
1.2x10-5
I/m
A
E/V
1a
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2
0.0
2.0x10-6
4.0x10-6
I/m
A
E/V
1b
26
7. EQE and J-V characteristics for 1a:PC71BM (1:2)
Figure S36. EQE (a) and J-V (b) characteristics of the SMBHJ for 1a blending with
PC61BM and PC71BM in a 1:2 ratio.