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Merck

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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100 MG

£658.75

£658.75

List Price£775.00Save 15%
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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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Product Name

PTB7, average Mw 80,000-200,000, PDI ≤3.0

description

Band gap: 1.84 eV

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

Quality Level

100

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1 of 4

This Item
754005794333753998
PTB7 average Mw 80,000-200,000, PDI ≤3.0

Sigma-Aldrich

772410

PTB7

PCPDTBT average Mw 7,000-20,000

Sigma-Aldrich

754005

PCPDTBT

PTB7-Th

Sigma-Aldrich

794333

PTB7-Th

PCDTBT

Sigma-Aldrich

753998

PCDTBT

form

solid

form

solid

form

solid

form

solid

description

Band gap: 1.84 eV

description

Band gap: 1.75 eV

description

Band gap: 1.57 eV, Shiny, purple, fiber-like solid

description

Band gap: 1.9 eV

mol wt

average Mw 80,000-200,000

mol wt

average Mw 7,000-20,000

mol wt

>145,000

mol wt

average Mw 100,000-140,000

greener alternative product characteristics

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

greener alternative product characteristics

-

greener alternative product characteristics

-

greener alternative product characteristics

-

sustainability

Greener Alternative Product

sustainability

-

sustainability

-

sustainability

-

solubility

chlorobenzene: soluble

solubility

-

solubility

chlorobenzene: soluble, dichlorobenzene: soluble

solubility

-

Application

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%
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).[1][2][3][4]

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.[5][6]
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.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV2515
MKCS5977
MKCN7177
MKCF6052
MKBT9891V

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Sylvia J Lou et al.
Journal of the American Chemical Society, 133(51), 20661-20663 (2011-12-01)
Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of
For the bright future-bulk heterojunction polymer solar cells with power conversion efficiency of 7.4%.
Yongye Liang et al.
Advanced materials (Deerfield Beach, Fla.), 22(20), E135-E138 (2010-07-20)
Efficient organic solar cells based on PTB7/PC71BM blend film with embedded different shapes silver nanoparticles into PEDOT: PSS as hole transporting layers
Chen C, et al.
Organic Electronics, 62, 95-101 (2018)
Morphological, Chemical, and Electronic Changes of the Conjugated Polymer PTB7 with Thermal Annealing
Savikhin V, et al.
iScience, 2, 182-192 (2018)
Absolute measurement of domain composition and nanoscale size distribution explains performance in PTB7: PC71BM solar cells
Collins BA, et al.
Advanced Energy Materials, 3(1), 65-74 (2013)
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