The content on our website is provided solely for general informational purposes.  It should not be considered, nor is it intended to provide advice or recommendations for the purchase, sale, or trade of any products or services.  Importantly, the information presented does not constitute an offer to sell or a solicitation of an offer to buy any product.

Please be aware that the availability of our products may vary across different markets due to regulatory restrictions or other considerations. Consequently, not all products or services may be available in your region or country. For specific inquiries regarding the availability and pricing of any product, please contact us at

General information

  • Name: BCPO
  • Full name: Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide
  • CAS number: 1233407-28-7
  • Chemical formula: C42H29N2OP
  • Molecular weight: 608.67 g/mol
  • Absorption: λmax = 292 nm in DCM
  • Photoluminescence: λmax = 388 nm in DCM
  • HOMO/LUMO: HOMO = 5.8 eV, LUMO = 2.2 eV
  • Synonyms: 9,9′-(4,4′-(Phenylphosphoryl)bis-(4,1-phenylene))bis(9H-carbazole)
  • Classification: Organic light-emitting diodes, Bipolar host materials, TADF materials
  • Purity: Sublimed: >99.0% (HPLC)
  • Melting point: Tg = 137 °C
  • Appearance: White powder/crystals

BCPO: Advanced Bipolar Host Material for OLED Technology

BCPO, or Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide, identified by CAS number 1233407-28-7, marks a significant advancement in the field of organic electronics, particularly in the fabrication of Organic Light-Emitting Diodes (OLEDs). With a molecular formula of C42H29N2OP, BCPO is engineered as a versatile bipolar host material suitable for both Fluorescent, especially Thermally Activated Delayed Fluorescence (TADF) and Phosphorescent OLEDs.BCPO is essential for developing high-performance OLEDs that combine enhanced efficiency with vibrant display qualities.

The Molecular Structure and Properties of BCPO

The unique molecular structure of BCPO, featuring carbazole groups linked to a phenylphosphine oxide core, enables it to effectively mediate betweenindividual layers of OLEDs resulting with balanced charge carrier mobility, promoting both hole and electron transport within the device. The strategic energy levels of BCPO, with a HOMO of 5.8 eV and a LUMO of 2.2 eV, ensure its compatibility with a wide range of emissive materials, facilitating the production of OLEDs with exceptional brightness, color accuracy, and energy efficiency.

Key Features of BCPO

  • Optimal Bipolar Charge Transport: BCPO distinguishes itself with unparalleled capabilities in facilitating balanced charge transport within OLED devices, a critical attribute for enhancing both device efficiency and operational stability. This ability ensures that both holes and electrons are transported efficiently across the device, minimizing energy losses and maximizing the quantum efficiency of the light-emitting process. Such balanced charge transport mechanism significantly contributes to the improvement of device performance, reducing power consumption and extending the lifespan of OLEDs, making BCPO a cornerstone material in the quest for more sustainable and energy-efficient electronic displays.
  • Versatile Application in OLED Technologies: The chemical structure and electronic properties of BCPO grant it exceptional versatility, allowing for its effective integration into a myriad of OLED configurations. From serving as a host material that accommodates a wide range of phosphorescent and fluorescent dopants to facilitating innovative TADF applications, BCPO’s adaptability is instrumental in pushing the boundaries of what is possible in OLED technology. This material supports the development of OLED devices that not only exhibit superior display performance and longevity but also demonstrate Noctiluca’s ability to meet diverse technological challenges with cutting-edge material solutions.
  • Superior Purity and Performance: BCPO’s sublimation purity, exceeding 99.0%, sets a benchmark in the OLED material industry, ensuring that the material delivered is of the highest quality. Such exceptional purity level plays a vital role in the manufacturing of OLED devices, as it directly influences the uniformity, lifespan, reliability, and overall performance of the end product. By providing OLED manufacturers with BCPO of such high purity, Noctiluca reaffirms its commitment to excellence in OLED material supply, underpinning the creation of OLED devices that are not only consistent in their performance but are also marked by enhanced durability and efficiency. This commitment to quality and performance cements Noctiluca’s reputation as a leading supplier in the OLED materials market, dedicated to advancing the future of display technology with superior materials like BCPO.

The Role of BCPO in Advanced OLEDs

BCPO plays a crucial role in the evolution of OLED technology, enabling the creation of devices that not only deliver aesthetic brilliance but also embody efficiency and sustainability. Its function as a bipolar host material enhances the integration of TADF and phosphorescent dopants, leading to OLED displays with unparalleled brightness and color saturation. This contribution is vital in pushing the boundaries of OLED technology, paving the way for the development of displays that offer enhanced visual experiences while adhering to energy-efficient principles.


BCPO exemplifies Noctiluca’s dedication to pioneering advancements in OLED material science, delivering solutions that meet the dynamic needs of the OLED sector. As a distinguished host material supplier, our proficiency in providing high-quality BCPO is complemented by our comprehensive chemical manufacturing services. Furthermore, our status as a contract research organization (CRO) enhances our ability to support partners through innovation, from conceptualization to commercialization. Through the strategic use of advanced materials like BCPO, Noctiluca is advancing display technology, aiding our partners in achieving excellence in device performance, visual fidelity, and environmental integrity. Our commitment to setting new standards in OLED technology reaffirms our position as a trusted partner in the chemical industry, driving the development of sustainable and high-performance electronic displays.


Any questions? Contact us!