806781

TPBi

• Synonym(s): 2,2′,2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)
• Empirical Formula (Hill Notation): C₄₅H₃₀N₆
• CAS Number: 192198-85-9
• Molecular Weight: 654.76
• MDL number: MFCD08276433
• UNSPSC Code: 12352103
• PubChem Substance ID: 329769027
• NACRES: NA.23

Properties

• assay: ≥99.5% (HPLC)
• Quality Level: 100
• form: powder
• mp: 272-277 °C
• orbital energy: HOMO 6.2 eV ; LUMO 2.7 eV
• OLED device performance: ITO/MoO₃/NPB/Cz-BTPE/TPBi/LiF/Al (ref 2);
  • Color: blue
  • Max. Luminance: 9911 Cd/m²
  • Max. EQE: 1.9 %
  • Turn-On Voltage: 4.9 V
  ; ITO/MoO₃/NPB/Ph-BTPE/TPBi/LiF/Al ;
  • Color: blue
  • Max. Luminance: 6497 Cd/m²
  • Max. EQE: 1.9 %
  • Turn-On Voltage: 5.3 V
  ; ITO/MoO₃/NPB/isopro-BTPE/TPBi/LiF/Al(ref 2);
  • Color: blue
  • Max. Luminance: 1127 Cd/m²
  • Max. EQE: 1.7 %
  • Turn-On Voltage: 5.3 V
  ; ITO/MoO₃/NPB/methyl-BTPE/TPBi/LiF/Al (ref 2);
  • Color: blue
  • Max. Luminance: 1976 Cd/m²
  • Max. EQE: 1.3 %
  • Turn-On Voltage: 5.3 V
• SMILES string: C1(C2=NC(C=CC=C3)=C3N2C4=CC=CC=C4)=CC(C5=NC(C=CC=C6)=C6N5C7=CC=CC=C7)=CC(C8=NC(C=CC=C9)=C9N8C%10=CC=CC=C%10)=C1
• InChI: 1S/C45H30N6/c1-4-16-34(17-5-1)49-40-25-13-10-22-37(40)46-43(49)31-28-32(44-47-38-23-11-14-26-41(38)50(44)35-18-6-2-7-19-35)30-33(29-31)45-48-39-24-12-15-27-42(39)51(45)36-20-8-3-9-21-36/h1-30H
• InChI key: GEQBRULPNIVQPP-UHFFFAOYSA-N

Description

General description

TPBi is an organic semiconductor that displays high electron mobility (3.3×10⁻⁵ cm² V⁻¹ s⁻¹) and high glass transition temperature. It is widely used as an electron transport layer(ETL) in QLEDs and OLEDs, which is a cathode buffer layer in organic solar cells.

The increase in power conversion efficiency of the device on the addition of TBPi is attributed to the following reasons:

• Preventing exciton from quenching at the acceptor/cathode interface.
• Acting as an optical spacer.
• Forming a passivating layer.

Application

TPBi can be used to fabricate an electron transport layer for organic-inorganic hybrid perovskite LEDs.

Safety Information

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