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794333

Sigma-Aldrich

PTB7-Th

Synonym(s):

PCE-10, Poly([2,6′-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene]{3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl})

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About This Item

Linear Formula:
(C49H57FO2S6)n
CAS Number:
1469791-66-9
UNSPSC Code:
12352103
NACRES:
NA.23

description

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

form

solid

mol wt

>145,000

solubility

chlorobenzene: soluble
dichlorobenzene: soluble

Orbital energy

HOMO -5.38 eV 
LUMO -3.81 eV 

PDI

2.2

General description

Poly([2,6′-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene]{3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}) (PTB7-Th) is a semiconducting polymer with a narrow band gap of 1.59 eV and an absorption peak at 780 nm. The devices fabricated from PTB7-Th have been shown to have higher output voltage and short circuit current density than PTB7.

Application

High-Efficiency Organic Solar Cells (OPVs)

OPV Device Structure: ITO/PEDOT:PSS/Polymer:PC71BM/ Al

  • JSC = 19.8 mA/cm2 \
  • VOC = 0.79 V
  • FF = 0.65
  • PCE = 10.12%
PTB7-Th is mainly used as an active layer in organic solar cells (OSCs). It forms a blend with different acceptor materials which include PC71BM, ICBA, and PCBM to potentially improve the power conversion efficiency (PCE) of the OSCs.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Interface design for high-efficiency non-fullerene polymer solar cells.
Sun C, et al.
Energy & Environmental Science, 10(8), 1784-1791 (2017)
Interfacial materials for organic solar cells: recent advances and perspectives.
Yin Z, et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 3(8), 1500362-1500362 (2016)
Single-junction polymer solar cells with high efficiency and photovoltage.
He Z, et al.
Nature Photonics, 9(3), 174-174 (2015)
Single-junction polymer solar cells with over 10% efficiency by a novel two-dimensional donor-acceptor conjugated copolymer.
Liu C, et al.
ACS Applied Materials & Interfaces, 7(8), 4928-4935 (2015)
10.8% efficiency polymer solar cells based on PTB7-Th and PC71BM via binary solvent additives treatment.
Wan Q, et al.
Advances in Functional Materials, 26(36), 6635-6640 (2016)
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