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772410

Sigma-Aldrich

PTB7

greener alternative

average Mw 80,000-200,000, PDI ≤3.0

Synonyme(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

Formule empirique (notation de Hill):
(C41H53FO4S4)n
Numéro CAS:
1266549-31-8
Code UNSPSC :
12352103
Nomenclature NACRES :
NA.23

Description

Band gap: 1.84 eV

Niveau de qualité

100

Forme

solid

Poids mol.

average Mw 80,000-200,000

Caractéristiques du produit alternatif plus écologique

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

sustainability

Greener Alternative Product

Solubilité

chlorobenzene: soluble
chloroform: soluble
dichlorobenzene: soluble

λmax

680 nm (thin film)

Énergie orbitale

HOMO -5.15 eV 
LUMO -3.31 eV 

Mw/Mn

2.4 +/- 0.6

PDI

≤3.0

Autre catégorie plus écologique

, Enabling

Catégories apparentées

Description générale

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).

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

Highly efficient tandem polymer photovoltaic cells
Sista S, et al.
Advanced Materials, 22(3), 380-383 (2010)
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)
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)
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)
Afficher tous les articles scientifiques apparentés

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%.

Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..

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