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906344

Sigma-Aldrich

PBDB-T-SF

Mw ≥80,000

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Synonym(s):
OS0130, PDBD-TSF, Poly[(2,6-(4,8-bis(5-(2-ethylhexylthio)-4-fluorothiophen-2-yl)-benzo[1,2-b:4,5-b′]dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′]dithiophene-4,8-dione)]
Linear Formula:
(C68H76F2O2S10)n
UNSPSC Code:
12352101
NACRES:
NA.23

description

Band gap: 1.8 eV

form

granular

mol wt

Mw ≥80,000

color

purple, Shine

solubility

chlorobenzene: soluble
chloroform: soluble
soluble (o-dichlorobenzene)

Orbital energy

HOMO -5.4 eV 
LUMO -3.6 eV 

PDI

~2.5

Related Categories

Application

PBDB-T-SF is a fluorinated wide-bandgap polymeric donor (n-type semiconductor) with relatively deep highest occupied molecular orbital (HOMO) energy level. It has been used in high performance polymer organic solar cells (PSCs).
HOMO =−5.40eV
LUMO =−3.60eV

Polymer organic solar cells (PSCs) device performance:

Device based on PBDB-T-SF:NCBDT-4Cl
Before any post-treatment
PCE= of 13.1%
After device optimizations
Voc = 0.85V
Jsc = 2.35 mA /cm2
FF = 74.3%
PCE >14%
Energy loss = 0.55 eV

The improved performance was attributed to the more efficient photo-electron conversion process in the optimal device.

Device performance based on PBDB-T-SF:ITIC-F as active layer
(ITO)/ZnO/active layer/MoO3/Al
Voc = 0.88 V
Jsc = 20.50 mA/cm2
FF = 71.9%
PCE = 13.1%
Energy loss = 0.66 eV

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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A chlorinated low-bandgap small-molecule acceptor for organic solar cells with 14.1% efficiency and low energy loss.
Kan B, et al.
Science China: Chemistry, 61(10), 1307-1313 (2018)
Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells
Z Wenchao, et al.
Journal of the American Chemical Society, 139(21), 7148-7151 (2017)

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