754005

PCPDTBT

average M_w 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)]
• Linear Formula: (C₃₁H₃₈N₂S₃)_n
• CAS Number: 920515-34-0
• UNSPSC Code: 12352103
• NACRES: NA.23

Properties

• description: Band gap: 1.75 eV
• form: solid
• mol wt: average M_w 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 (J_sc): 16.2 mA/cm²
  • Open-circuit voltage (V_oc): 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)

Description

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable