News [2018]

[Research Publication] A review of the recent advances in pyrimidine derivatives for high performance OLEDs by Mr. Ryotaro Komatsu, a third-year Ph.D. student in the Kido-Sasabe laboratory was accepted for publication by the Journal of Photonics for Energy.

2018/02/13

A review article entitled "Recent Progress of Pyrimidine Derivatives for High-Performance OLEDs" by Mr. Ryutaro Komatsu, a third-year Ph.D. student in the Innovative Flex Course for Frontier Organic Material Systems (iFront), has been accepted for publication by SPIE’s Journal of Photonics for Energy (Impact Factor: 2.287). The review summarizes 85 scientific articles on luminescent materials, host materials, electron transporting materials, exciplex hosts, thermally activated delayed fluorescence (TADF) materials etc. that contain pyrimidine. The scope of the review is broad: it starts with pyrimidine containing electron transporting materials and host materials introduced by the Kido-Sasabe laboratory in 2007 and discusses the latest developments including the development of horizontally oriented pyrimidine TADF materials with 29% external quantum efficiency in 2017.

Title: Recent Progress of Pyrimidine Derivatives for High-Performance OLEDs
By Ryutaro Komatsu, Hisahiro Sasabe,* Junji Kido,* Journal of Photonics for Energy, accepted.

Abstract: Pyrimidine is an electron-deficient azaaromatic compound containing two nitrogen atoms at 1,3-positions that plays a key role as an organic semiconductor or semiconducting material. Because of the high electron-accepting property induced by C=N double bonds and due to its coordination ability, pyrimidine has been incorporated as a building block in phosphorescent emitters, fluorescent emitters, bipolar host materials, and electron transporting materials in organic light-emitting devices (OLEDs). Recently, pyrimidine-based thermally activated delayed fluorescent emitters combined with various electron donors have been developed, and their device performances were far better than those based on conventional fluorescent emitters. In this review, recent progress of pyrimidine-based OLED materials is presented and accompanied by a historical overview, current status, key issues, and outlook for the next generation of high-performance OLED materials.

News