The environment development for deep sleep has been studied using analysis results of the big data about parameters in the bedroom. The organic light emitting diode (OLED) illuminations of the bedroom are dimming using analysis results of the big data. Therefore, a low-power and compact design of dimming part is required for OLED system. In this paper, the miniaturized control block of the cloc...

The advantages of printed electronics and semiconducting single-walled carbon nanotubes (SWCNTs) are combined for the first time for display electronics. Conductive silver ink and 98% semiconductive SWCNT solutions are used to print back-gated thin film transistors with high mobility, high on/off ratio, and high current carrying capacity. In addition, with printed polyethylenimine with LiClO4 a...

We develop a simple method to improve external quantum efficiencies (EQEs) of OLEDs under a wide range of current density. An insulating inorganic ultrathin layer (LiF) was sandwiched between exciton formation layer and electron transporting layer. A maximal EQE of 5.9% in a DCM based fluorescent OLED, which far exceeds the theoretical upper limit of 3.7%, was obtained under the current density...

The low efficiency of blue devices has been a bottleneck problem for OLED panel manufacturers long time. In recent years, TASF‐OLED attracted great attention because the high external quantum and color purity, which makes it promising technology deep OLEDs. this paper, we present our latest development TADF material TASF‐OLEDs with an emission peak at 460 nm up to 31 %.

The conference “Occupational Limit Values for Hazardous Substances – Healthy working conditions in a global economy” in Dortmund discussed the relationship of various exposure levels for chemicals at the workplace: the “OELs occupational exposure limits” from member states or European institutions, “AOELs acceptable operator exposure levels” for biocides or pesticides, and “DNELs derived no eff...