High‐Performance Solution‐Processable Organic Light‐Emitting Diode Based on a Narrowband Near‐Ultraviolet and a Hot Exciton Strategy DOI
Kai Jiang, Xiang Chang, Jieqiong Zhu

и другие.

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Дек. 3, 2024

Abstract Achieving high efficiency narrowband near‐ultraviolet (NUV) emitters in organic light emitting diode (OLED) is still a formidable challenge. Herein, proof‐of‐concept hybridized local and charge transfer (HLCT) molecule, named ICz‐BO, prepared characterized, which both multiresonant (MR) skeletons are integrated via conjugation connection. A slightly distorted structure weak intramolecular (CT) interaction between two MR subunits lead to high‐lying reverse intersystem crossing (h‐RISC) channel of T 6 → S 1 , also evidenced by experimental calculated results. Impressively, the ICz‐BO emitter exhibits outstanding NUV emission at 404 nm with full‐width half maximum 28 toluene solution. The solution processable OLED shows an excellent device performance recorded external quantum 12.01 %, concomitant extremely low y‐axis Commission Internationale de l’Éclairage (CIE y ) value 0.031. To best our knowledge, this highest reported for HLCT‐based NUV‐OLEDs date. This research proves that skeleton plays positive effect on hot exciton emitter, provides alternative paradigm developing high‐efficiency emitters.

Язык: Английский

Pyrazine-fused polycyclic aromatic hydrocarbons towards efficient multiple-resonance narrowband deep-blue emission DOI
Yajie Wang, Wei Yang, He Zhang

и другие.

Science China Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Окт. 31, 2024

Язык: Английский

Процитировано

0
Mitigating Slow Reverse ISC Rates in TAPC-PBD Exciplex via Rapid Förster Energy Transfer to TTPA DOI Creative Commons
Lucy A. Weatherill,

Ross Milverton,

Piotr Pander

и другие.

Organic Electronics, Год журнала: 2024, Номер unknown, С. 107180 - 107180

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

0
High‐Performance Solution‐Processable Organic Light‐Emitting Diode Based on a Narrowband Near‐Ultraviolet and a Hot Exciton Strategy DOI
Kai Jiang, Xiang Chang, Jieqiong Zhu

и другие.

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Дек. 3, 2024

Abstract Achieving high efficiency narrowband near‐ultraviolet (NUV) emitters in organic light emitting diode (OLED) is still a formidable challenge. Herein, proof‐of‐concept hybridized local and charge transfer (HLCT) molecule, named ICz‐BO, prepared characterized, which both multiresonant (MR) skeletons are integrated via conjugation connection. A slightly distorted structure weak intramolecular (CT) interaction between two MR subunits lead to high‐lying reverse intersystem crossing (h‐RISC) channel of T 6 → S 1 , also evidenced by experimental calculated results. Impressively, the ICz‐BO emitter exhibits outstanding NUV emission at 404 nm with full‐width half maximum 28 toluene solution. The solution processable OLED shows an excellent device performance recorded external quantum 12.01 %, concomitant extremely low y‐axis Commission Internationale de l’Éclairage (CIE y ) value 0.031. To best our knowledge, this highest reported for HLCT‐based NUV‐OLEDs date. This research proves that skeleton plays positive effect on hot exciton emitter, provides alternative paradigm developing high‐efficiency emitters.

Язык: Английский

Процитировано

0