Thermally Activated Delayed Fluorescence (TADF) technology represents a significant advancement in the field of Organic Light-Emitting Diodes (OLEDs), promising higher efficiencies and enabling vibrant, long-lasting displays. A critical component enabling this leap is the judicious selection of host materials, and 3,3'-Di(9H-carbazol-9-yl)-1,1'-biphenyl (mCBP) stands out as a particularly effective choice for TADF applications.

TADF emitters are designed to harness both singlet and triplet excitons for light emission, a feat achieved through a small energy gap between the singlet and triplet excited states (ΔEST). This allows triplet excitons, which are generated at three times the rate of singlet excitons, to be converted into singlet excitons via Reverse Intersystem Crossing (RISC) and subsequently emit light. For this process to occur efficiently, the host material must possess a high triplet energy level (ET) to effectively confine the triplet excitons on the guest TADF emitter. mCBP, with its intrinsically high triplet energy of approximately 2.8 eV, excels in this regard. This high ET prevents energy back-transfer from the emitter to the host, a common bottleneck that hinders TADF efficiency.

Furthermore, the molecular structure of mCBP, characterized by its meta-linked carbazole units, contributes to its excellent charge transport properties. Balanced injection and transport of both electrons and holes are essential for ensuring that recombination occurs efficiently within the emissive layer. By acting as a robust matrix, mCBP facilitates this process, leading to improved quantum efficiencies and device performance. Researchers and product developers looking to buy materials that deliver on the promise of TADF technology will find mCBP to be an indispensable component.

As a dedicated supplier of advanced organic chemicals, we provide mCBP in various purity levels, including high-purity sublimed grades essential for the sensitive requirements of TADF device fabrication. Our commitment as a manufacturer based in China means we can offer competitive pricing for bulk purchases, making this advanced material accessible for scaled-up production. For procurement specialists aiming to integrate high-efficiency TADF emitters into their next generation of devices, securing a reliable supply of mCBP is a key strategic decision. We invite you to connect with us to explore how our high-quality mCBP can elevate your TADF-OLED projects and to inquire about purchasing options.