Ultra-simple white organic light-emitting diodes employing only two complementary colors with color-rendering index beyond 90

Abstract

This ultra-simple di-chromatic WOLED, using only three organic materials, achieves an ultra-high CRI of 90, which is even comparable with other reported three-color, four-color, and five-color WOLEDs.

Manipulation and exploitation of singlet and triplet excitons for hybrid white organic light-emitting diodes with superior efficiency/CRI/color stability

“…With the appearance of red peak in EL spectra, device W1 exhibits improved white color quality with a maximum CRI of 73. However, CRI is still not up to the threshold value of 80 for WOLEDs used in lighting 7, 25,35,40 . And from Fig.…”

“…And the proposed hybrid WOLED also realizes a good manipulation and exploitation of singlet and triplet excitons for an almost 100% excitons harvest, achieving a high device performance. To our knowledge, this is one of the best results to date for a hybrid WOLED exhibiting superior efficiency (17.71 %), high CRI (94) and good color stability simultaneously [5,7,10,15,19,40] .…”

The application of a non-doped composite hole transport layer of [MoO3/CBP]n with multi-periodic structure for high power efficiency organic light-emitting diodes

“…The great enhancement in current density with increased periodic number demonstrated better conductivity of non-doped 3-periodic structure of C-HTLs, which indicated optimized hole injection and transport. [26][27][28][29][30] The current efficiency-luminance-EQE and power efficiency-luminance curves are shown in Fig. 1c and d, respectively.…”

Triaryl-1,4-diamine-based polysquaraines: effect of co-solvent and monomer insertion on optoelectronic properties

“…This value is among the higher (if not the highest) reported for a single-polymer based white OLED. 34 In this work, new squaraine based conjugated polymers and random co-polymers have been synthesized via metal-free polycondensation. By modifying the squaric acid, a reference model was synthesized in order to quantify the ratio between 1,2 and 1,3 linkages on the squaraïne unit, allowing a better understanding of the structure-properties relationship.…”