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772410

PTB7

greener alternative

average Mw 80,000-200,000, PDI ≤3.0

Synonym(s):

Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl})

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About This Item

Empirical Formula (Hill Notation):
(C41H53FO4S4)n
CAS Number:
1266549-31-8
NACRES:
NA.23
UNSPSC Code:
12352103
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description

Band gap: 1.84 eV

Quality Segment

100

form

solid

mol wt

average Mw 80,000-200,000

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

solubility

chlorobenzene: soluble, chloroform: soluble, dichlorobenzene: soluble

λmax

680 nm (thin film)

orbital energy

HOMO -5.15 eV , LUMO -3.31 eV 

Mw/Mn

2.4 +/- 0.6

PDI

≤3.0

greener alternative category

, Enabling

General description

PTB7 is a semiconducting polymer used in organic photovoltaics with an energy efficiency of 9.15%. It can act as an electron donor with narrow optical band gaps and excellent π-π conjugation while forming a nanocomposite with fullerenes.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to Enabling category of greener alternatives thus aligns with "Design for energy efficency". Hole transport organic materials allow perfect energy level alignment with the absorber layer and therefore efficient charge collection, are prone to degradation in ambient conditions.Click here for more information.

Application

It is majorly used as an active layer that enhances the overall performance by increasing the light absorption and improving the electron mobility of polymeric solar cells (PSCs).
High-Efficiency Organic Solar Cells (OPVs)
OPV Device Structure: ITO/PEDOT:PSS/PTB7 :PC71BM/Ca/Al
  • JSC = 14.9 mA/cm2
  • VOC = 0.75 V
  • FF = 0.69
  • PCE = 7.4%

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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