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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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About This Item

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

Key Documents

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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

Related Categories

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

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).

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

772410-BULK: + 772410-100MG: + 772410-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV2515
MKCS5977
MKCN7177
MKCF6052
MKBT9891V

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Highly efficient tandem polymer photovoltaic cells
Sista S, et al.
Advanced Materials, 22(3), 380-383 (2010)
Effect of Active Layer Thickness on the Performance of Polymer Solar Cells Based on a Highly Efficient Donor Material of PTB7-Th
Zang Y, et al.
The Journal of Physical Chemistry C, 122(29), 16532-16539 (2018)
ZnO: CNT assisted charge transport in PTB7: PCBM blend organic solar cell
Oseni SO, et al.
Journal of alloys and compounds, 748(1), 216-222 (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)
Morphological, Chemical, and Electronic Changes of the Conjugated Polymer PTB7 with Thermal Annealing
Savikhin V, et al.
iScience, 2, 182-192 (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.

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%.

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.

ジケトピロロピロールおよびチエノチオフェンを用いた高性能半導体ポリマー

高性能共役系有機化合物およびポリマーの開発は、産学の研究において広く注目を集めています。

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