NINGBO INNO PHARMCHEM CO.,LTD. proudly supplies Bis[2-(diphenylphosphino)phenyl] Ether Oxide (DPEPO), CAS: 808142-23-6, a compound of immense versatility and importance in the field of organic electronics, particularly in the advancement of OLED and Thermally Activated Delayed Fluorescence (TADF) technologies.

DPEPO's unique molecular architecture, featuring diphenylphosphine oxide groups linked by a diphenyl ether core, bestows upon it a set of electronic and photophysical properties that are highly sought after in OLED applications. Its primary roles are as a host material in the emissive layer and as an electron transport layer (ETL). The effectiveness of OLEDs relies on efficient charge injection, transport, and recombination, as well as controlled energy transfer to emissive dopants. DPEPO excels in facilitating these processes.

As a host material, DPEPO provides a stable matrix for emissive molecules. Its wide band gap makes it particularly suitable for hosting blue emitters, which are critical for achieving full-color displays with high color purity and brightness. DPEPO's ability to efficiently transfer energy to these emitters, coupled with its own high triplet energy, helps to maximize light output and minimize efficiency roll-off, even at high brightness levels. This is crucial for applications demanding vibrant and accurate color reproduction, such as in high-end displays.

In its capacity as an electron transport layer (ETL), DPEPO plays a vital role in balancing the charge carriers within the OLED device. Its favorable LUMO energy level facilitates efficient injection of electrons from the cathode and their subsequent transport to the emissive layer. This efficient electron mobility, combined with its function as a hole blocking layer (HBL) due to its deep HOMO level, ensures that charge recombination occurs predominantly within the emissive layer. This focused recombination zone leads to higher quantum efficiencies and improved operational stability.

The emergence of TADF technology has further amplified the significance of DPEPO. TADF emitters are designed to harvest both singlet and triplet excitons for light emission, promising near 100% internal quantum efficiency. DPEPO's electronic properties are well-suited to support the critical reverse intersystem crossing (RISC) mechanism required for TADF operation. It acts as an effective host material for TADF emitters, facilitating the necessary energy transfer and charge management for efficient emission. This makes DPEPO an indispensable material for developing the next generation of ultra-efficient OLED displays and lighting.

NINGBO INNO PHARMCHEM CO.,LTD. ensures that the DPEPO we supply meets the stringent purity requirements (>99% sublimed) necessary for these advanced applications. The meticulous synthesis and purification processes guarantee that DPEPO contributes positively to device performance, offering excellent thermal stability, charge transport capabilities, and photophysical properties that are essential for innovation in OLED and TADF technologies.

Whether you are developing cutting-edge displays, efficient lighting solutions, or pioneering TADF emitters, DPEPO from NINGBO INNO PHARMCHEM CO.,LTD. provides the foundational material for success.