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794333

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PTB7-Th

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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})
Linear Formula:
(C49H57FO2S6)n
CAS Number:
NACRES:
NA.23

description

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

Quality Level

form

solid

mol wt

>145,000

solubility

chlorobenzene: soluble
dichlorobenzene: soluble

orbital energy

HOMO -5.38 eV 
LUMO -3.81 eV 

PDI

2.2

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This Item
772410754005753971
PTB7-Th

794333

PTB7-Th

PTB7 average Mw 80,000-200,000, PDI ≤3.0

772410

PTB7

PCPDTBT average Mw 7,000-20,000

754005

PCPDTBT

PBTTT-C14

753971

PBTTT-C14

description

Band gap: 1.57 eV

description

Band gap: 1.84 eV

description

Band gap: 1.75 eV

description

-

mol wt

>145,000

mol wt

average Mw 80,000-200,000

mol wt

average Mw 7,000-20,000

mol wt

Mw >50,000

solubility

chlorobenzene: soluble

solubility

chlorobenzene: soluble, chloroform: soluble, dichlorobenzene: soluble

solubility

-

solubility

-

orbital energy

HOMO -5.38 eV 

orbital energy

HOMO -5.15 eV , LUMO -3.31 eV 

orbital energy

HOMO -5.3 eV , LUMO -3.55 eV 

orbital energy

-

PDI

2.2

PDI

≤3.0

PDI

-

PDI

-

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


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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)
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)
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)
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)

Articles

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