Skip to Content

Dear Customer:

The current international situation is complex and volatile, and uncertain tariff policies may potentially impact our product prices. Given these uncertainties, we value your understanding regarding order-related matters.

If you decide to place an order during this period, we reserve the right to adjust the price based on the evolving situation. We understand that market changes may cause inconvenience. We will negotiate with you if there’s a significant price fluctuation due to tariff policy changes before the order’s actual delivery, and in such cases we may adjust or cancel the order as necessary.

Merck
CN
All Photos(1)

Key Documents

View All Documentation

772410

Sigma-Aldrich

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})

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
(C41H53FO4S4)n
CAS Number:
1266549-31-8
UNSPSC Code:
12352103
NACRES:
NA.23
Product 772410 is not currently sold in your country. Contact Technical Service

description

Band gap: 1.84 eV

Quality Level

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

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
81053381053N810535
Bovine Serum Albumin ≥98.5%, New Zealand origin

BSAVRO

Bovine Serum Albumin

Bovine Serum Albumin Fraction V pack of 100 g

810533

Bovine Serum Albumin Fraction V

Bovine Serum Albumin Fraction V pack of 10 g

81053N

Bovine Serum Albumin Fraction V

Bovine Serum Albumin Fraction V pack of 5 kg

810535

Bovine Serum Albumin Fraction V

assay

≥98.5%

assay

≥98% (purity)

assay

≥98% (purity)

assay

≥98% (purity)

technique(s)

ELISA: suitable, western blot: suitable, Southern blotting: suitable

technique(s)

blood typing: suitable ( )

technique(s)

blood typing: suitable ( )

technique(s)

blood typing: suitable ( )

origin

New Zealand origin

origin

USA origin

origin

USA origin

origin

USA origin

biological source

bovine

biological source

bovine serum

biological source

bovine serum

biological source

bovine serum

Quality Level

100

Quality Level

300

Quality Level

300

Quality Level

300

form

lyophilized

form

lyophilized powder

form

lyophilized powder

form

lyophilized powder

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.[1][2]
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

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).[3][4][5][6]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCV2515
    MKCS5977
    MKCN7177
    MKCF6052
    MKBT9891V

    Don't see the Right Version?

    If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

    Search for a COA

    Already Own This Product?

    Find documentation for the products that you have recently purchased in the Document Library.

    Visit the Document Library

    Highly efficient tandem polymer photovoltaic cells
    Sista S, et al.
    Advanced Materials, 22(3), 380-383 (2010)
    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
    Morphological, Chemical, and Electronic Changes of the Conjugated Polymer PTB7 with Thermal Annealing
    Savikhin V, et al.
    iScience, 2, 182-192 (2018)
    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)
    View All Related Papers

    Articles

    High-Performance Semiconductor Polymers Based on Diketopyrrolopyrrole and Thienothiophene

    The development of high-performance conjugated organic molecules and polymers has received widespread attention in industrial and academic research.

    Inverted Organic Photovoltaic Devices Using Zinc Oxide Nanocomposites as Electron Transporting Layer Materials

    Organic photovoltaics (OPVs) represent a low-cost, lightweight, and scalable alternative to conventional solar cells. While significant progress has been made in the development of conventional bulk heterojunction cells, new approaches are required to achieve the performance and stability necessary to enable commercially successful OPVs.

    Progress for High Performance Tandem Organic Solar Cells

    Professor Chen (Nankai University, China) and his team explain the strategies behind their recent record-breaking organic solar cells, reaching a power conversion efficiency of 17.3%.

    Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

    Contact Technical Service