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754005

Sigma-Aldrich

PCPDTBT

average Mw 7,000-20,000

Synonym(s):

Poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b′]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)]

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About This Item

Linear Formula:
(C31H38N2S3)n
CAS Number:
UNSPSC Code:
12352103
NACRES:
NA.23

description

Band gap: 1.75 eV

Quality Level

form

solid

mol wt

average Mw 7,000-20,000

loss

0.5 wt. % TGA, 350 °C

mp

>400 °C

λmax

700 nm

orbital energy

HOMO -5.3 eV 
LUMO -3.55 eV 

OPV device performance

ITO/PEDOT:PSS/PCPDTBT:PC61BM/Al

  • Short-circuit current density (Jsc): 16.2 mA/cm2
  • Open-circuit voltage (Voc): 0.62 V
  • Fill Factor (FF): 0.55
  • Power Conversion Efficiency (PCE): 5.2 %

semiconductor properties

P-type (mobility=2×10−2 cm2/V·s)

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General description

PCPDTBT is a low band gap polymer that is used as a donor material with a high photovoltaic efficiency. It can form blends with a variety of conducting polymers which can be used to enhance the power conversion efficiency (PCE) in an electrochemical device.
Soluble in cyclohexane, toluene, chloroform, and THF

Application

PCPDTBT can form a donor/acceptor blend with PCBM which can be used as a polymeric backbone for use in the fabrication of organic solar cells.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Efficiency enhancement for bulk-heterojunction hybrid solar cells based on acid treated CdSe quantum dots and low bandgap polymer PCPDTBT
Zhou Y, et al.
Solar Energy Materials and Solar Cells, 95(4), 1232-1237 (2011)
An integrated experimental/theoretical study of structurally related poly-thiophenes used in photovoltaic systems
Vanossi D, et al.
Molecules (Basel), 21(1), 110-110 (2016)
David Muhlbacher,
Advanced Materials, 18, 2884-2889 (2006)
J Peet et al.
Nature materials, 6(7), 497-500 (2007-05-29)
High charge-separation efficiency combined with the reduced fabrication costs associated with solution processing and the potential for implementation on flexible substrates make 'plastic' solar cells a compelling option for tomorrow's photovoltaics. Attempts to control the donor/acceptor morphology in bulk heterojunction
Bulk heterojunction bipolar field-effect transistors processed with alkane dithiol
Cho S, et al.
Organic Electronics, 9(6), 1107-1111 (2008)

Articles

The development of high-performance conjugated organic molecules and polymers has received widespread attention in industrial and academic research.

Optoelectronic Devices Based on Diketopyrrolopyrrole (DPP)-containing Conjugated Small Molecules

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.

There is widespread demand for thin, lightweight, and flexible electronic devices such as displays, sensors, actuators, and radio-frequency identification tags (RFIDs). Flexibility is necessary for scalability, portability, and mechanical robustness.

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