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Product Code B1431-5g
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3,3'-Bicarbazole, Bicarbazole derivative

A useful building block for the synthesis of hole transport layer, host, TADF emitting layer materials in application of organic light-emitting devices and perovskite solar cells.


3,3'-Bicarbazole is a bicarbazole derivate that is formed by joining two carbazole units at 3,3'-positions. Bonding at 3,3'-positions not only extends the conjugation of each individual carbazole units but also improves the stability by partially blocking the electron active sites at 3,3'-positions.

As a bipolar charge transporting material derived from 3,3‘-bicarbazole, triphenylsilyl-substituted 3,3‘-bicarbazole, was found to be a good phosphorescent host that is competitive with the widely used host mCP. Warm-white-emissive device exploring 9-(9,9’-spirobi[fluoren]-3-yl)-9’-phenyl-9H,9’H-3,3’-bicarbazole (SFBCz) as one of the exciplex-forming hosts, a blue TADF-sensitizer 5TCzBN, and a yellow fluorescent dopant TBRb in a single-emissive-layer demonstrated an external quantum efficiency of 21.4%, a benchmark PE of 69.6 lm W-1, and a remarkable T80 of >8200 h at 1000 cd m-2.

Highly efficient and stable perovskite solar cells using the p–i–n device structure ITO/NiOx/NP-BC/perovskite/PC61BM/BCP/Ag achieved an overall PCE of almost 20%. NP-BC is 3,3′-bicarbazole-based hole transporting material 9,9'-Diphenyl-9H,9'H-3,3'-bicarbazole, also named as BczPh.

General Information

CAS Number 1984-49-2
Chemical Formula C24H16N2
Molecular Weight 332.41 g/mol
Full Name 3,3'-Bicarbazole
Synonyms 9H,9'H-3,3'-Bicarbazole, 3,3'-Bi-9H-carbazole; 9H,9H-[3,3]Bicarbazolyl
Classification / Family Bicarbazole derivatives, Semiconductor synthesis intermediates, Heterocyclic building blocks

Chemical Structure

3,3'-Bicarbazole chemical structure, CAS 1984-49-2
3,3'-Bicarbazole chemical structure, CAS 1984-49-2

Product Details

Purity >98% (1H NMR)
Melting Point N/A
Appearance Off-white to grey powder/crystals

MSDS Documentation

3,3'-Bicarbazole3,3'-Bicarbazole MSDS Sheet

Literature and Reviews

  1. 3,3′-Bicarbazole-based compounds as bipolar hosts for green and red phosphorescent organic light-emitting devices, O. Bezvikonnyi et al., Mater. Sci. Eng. B, 261, 114662 (2020); DOI: 10.1016/j.mseb.2020.114662.
  2. Forming a Metal-Free Oxidatively Coupled Agent, Bicarbazole, as a Defect Passivation for HTM and an Interfacial Layer in a p–i–n Perovskite Solar Cell Exhibits Nearly 20% Efficiency, S. Maddala et al., Chem. Mater., 32 (1), 127–138 (2020); DOI: 10.1021/acs.chemmater.9b02720.
  3. A π–D and π–A Exciplex-Forming Host for High-Efficiency and Long-Lifetime Single-Emissive-Layer Fluorescent White Organic Light-Emitting Diodes, C. Zhang et al., Adv. Mater., 32 (42), 2004040 (2020); DOI: 10.1002/adma.202004040.
  4. Revealing the Cooperative Relationship between Spin, Energy, and Polarization Parameters toward Developing High-Efficiency Exciplex Light-Emitting Diodes, M. Wang et al., Adv. Mater., 31 (46), 1904114 (2019); DOI: 10.1002/adma.201904114.
  5. A thermally cross-linkable hole-transporting small-molecule for efficient solution-processed organic light emitting diodes, D. Dubey et al., Org. Electron., 73, 94-101 (2019); DOI: 10.1016/j.orgel.2019.06.011.
  6. High Fluorescence Rate of Thermally Activated Delayed Fluorescence Emitters for Efficient and Stable Blue OLEDs, L. Su et al., ACS Appl. Mater. Interfaces, 12 (28), 31706–31715 (2020); DOI: 10.1021/acsami.0c07840.


To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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