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806781

TPBi

Synonym(s):

2,2′,2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole), 1,3,5-Tris(1-phenyl-1H-benzimidazol-2-yl)benzene

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About This Item

Empirical Formula (Hill Notation):
C45H30N6
CAS Number:
192198-85-9
Molecular Weight:
654.76
NACRES:
NA.23
PubChem Substance ID:
329769027
UNSPSC Code:
12352103
MDL number:
MFCD08276433
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description

Electron Transport Layer

Quality Segment

100

assay

≥99.5% (HPLC)

form

powder

mp

272-277 °C

orbital energy

HOMO 6.2 eV , LUMO 2.7 eV 

OLED device performance

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
, 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/Cz-BTPE/TPBi/LiF/Al (ref 2)
  • Color: blue
  • Max. Luminance: 9911 Cd/m2
  • Max. EQE: 1.9 %
  • Turn-On Voltage: 4.9 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

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 due to its broad energy band and superior electron transport properties. It also serves as an excellent host material for both fluorescent and phosphorescent LEDs because of its optical, electronic, and processing characteristics.
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.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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