Highly efficient polymer solar cells based on a universal cathode interlayer composed of metallophthalocyanine derivative with good film-forming propertyElectronic supplementary information (ESI) available: Details of UV/vis absorption spectrum and electrochemical properties of ZnPc(OC8H17OPyCH3I)8, J-V characteristics of electron-only and hole-only devices and curves of the PSCs based on P3HT:PC61BM, PCDTBT:PC71BM with the various cathodes. See DOI: 10.1039/c4ta06601d
A new cathode interlayer (CIL) material metallophthalocyanine (MPc) derivative 1,4,8,11,15,18,22,25-octaoctyloxy-2,3,9,10,16,17,23,24-octa-[ N -methyl-(3-pyridyloxy)] zinc-ylphthalocyanine iodide (1 : 8) (ZnPc(OC 8 H 17 OPyCH 3 I) 8 ) was synthesized and applied in polymer solar cells (PSCs) based o...
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Main Authors | , , , , , , |
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Format | Journal Article |
Language | English |
Published |
10.02.2015
|
Online Access | Get full text |
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Summary: | A new cathode interlayer (CIL) material metallophthalocyanine (MPc) derivative 1,4,8,11,15,18,22,25-octaoctyloxy-2,3,9,10,16,17,23,24-octa-[
N
-methyl-(3-pyridyloxy)] zinc-ylphthalocyanine iodide (1 : 8) (ZnPc(OC
8
H
17
OPyCH
3
I)
8
) was synthesized and applied in polymer solar cells (PSCs) based on PTB7:PC
71
BM (PTB7 = thieno[3,4-
b
]thiophene/benzodithiophene, PC
71
BM = [6,6]-phenyl C71-butyric acidmethyl ester), P3HT:PC
61
BM (P3HT = poly(3-hexylthiophene), PC
61
BM = [6,6]-phenyl C61-butyric acidmethyl ester) or PCDTBT:PC
71
BM (PCDTBT = poly[
N
-9′′-heptadecanyl-2,7-carbazole-
alt
-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)]) as an active layer. As a result, power conversion efficiency (PCE) values of the PSCs were 8.52%, 4.02% and 6.88%, respectively, which are much higher than those of corresponding PSCs with the Al-only cathode. It indicates that ZnPc(OC
8
H
17
OPyCH
3
I)
8
is a new promising candidate as a universal CIL for highly efficient PSCs. Compared to VOPc(OPyCH
3
I)
8
(2,3,9,10,16,17,23,24-octakis-[
N
-methyl-(3-pyridyloxy)] vanadylphthalocyanine iodide (1 : 8)), the PSC with ZnPc(OC
8
H
17
OPyCH
3
I)
8
as a CIL has higher short-circuit current and fill factor because ZnPc(OC
8
H
17
OPyCH
3
I)
8
can form a better, denser, and more uniform film on the active layer than VOPc(OPyCH
3
I)
8
as demonstrated by atomic force microscopy (AFM), energy-dispersive spectrum mapping on scan electron microscopy (SEM-EDS mapping) and contact angle measurements.
ZnPc(OC
8
H
17
OPyCH
3
I)
8
with good adhesion to active layer has been utilized as a cathode interlayer for highly efficient polymer solar cells. |
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Bibliography: | OPyCH 17 H I J , - 10.1039/c4ta06601d Electronic supplementary information (ESI) available: Details of UV/vis absorption spectrum and electrochemical properties of ZnPc(OC 3 BM, PCDTBT:PC V 8 characteristics of electron-only and hole-only devices and curves of the PSCs based on P3HT:PC 71 BM with the various cathodes. See DOI 61 |
ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/c4ta06601d |