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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

Quality Level

100

form

solid

mol wt

>145,000

solubility

chlorobenzene: soluble
dichlorobenzene: soluble

orbital energy

HOMO -5.38 eV 
LUMO -3.81 eV 

PDI

2.2

Related Categories

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

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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Single-junction polymer solar cells with high efficiency and photovoltage.
He Z, et al.
Nature Photonics, 9(3), 174-174 (2015)
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)
Fullerene derivative-doped zinc oxide nanofilm as the cathode of inverted polymer solar cells with low-bandgap polymer (PTB7-Th) for high performance.
Liao S, et al.
Advanced Materials, 25(34), 4766-4771 (2013)
High-performance ternary organic solar cells with thick active layer exceeding 11% efficiency.
Gasparini N, et al.
Energy & Environmental Science, 10(4), 885-892 (2017)
Interface design for high-efficiency non-fullerene polymer solar cells.
Sun C, et al.
Energy & Environmental Science, 10(8), 1784-1791 (2017)
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