TY  - JOUR
T1  - Three-color white electroluminescence emission using perovskite quantum dots and organic emitters
AU  - Kwon, Hyukmin
AU  - Park, Sangshin
AU  - Kang, Seokwoo
AU  - Park, Sunwoo
AU  - Pu, Yong-Jin
AU  - Park, Jongwook
JO  - Applied Surface Science
VL  - 588
SP  - 152875
PY  - 2022
DA  - 2022/06/30/
SN  - 0169-4332
DO  - https://doi.org/10.1016/j.apsusc.2022.152875
UR  - https://www.sciencedirect.com/science/article/pii/S0169433222004512
KW  - White emission
KW  - Perovskite quantum dots
KW  - Hybrid perovskite QD-organic emitters
AB  - To realize a full-color display in the research field of perovskites or perovskite-structured quantum dots (PeQDs), the development of white-light-emitting devices that operate by emitting light of three primary colors (red, green, and blue) has emerged as an active research topic. In the present study, we report for the first time three-color white-light emission with high brightness from white-emitting PeQD organic light-emitting diodes (WPeQD-OLEDs) fabricated using a PeQD material and organic emitters. A WPeQD-OLED bilayer was prepared by depositing a blue-emitting organic layer on top of a CsPb(Br/I)3 QD layer mixed with N9,N10-Bis(4-(tert-butyl)phenyl)-N9,N10-Di-o-Tolylanthracene-9,10-Diamine (p-Tb-o-Me-TAD), which were spin-coated as red and green emitters, respectively. The WPeQD-OLED device was stable during operation and demonstrated emission of three primary colors. In the WPeQD-OLED device, charge carriers were distributed by an 9-(naphthalen-1-yl)-10-(naphthalen-2-yl)anthracene (α,β-ADN) blue-emitting host material with a deep highest occupied molecular orbital level. The electroluminescence (EL) spectra of the WPeQD-OLEDs showed EL maximum peaks at 460, 527, and 640 nm; the CIE color coordinates of the emitted light were (0.33, 0.40). The EL results confirmed that the maximum luminance was 49,000 cd m−2 and the maximum luminance efficiency and power efficiency were 4.48 cd A−1 and 2.16 lm W−1, respectively.
ER  -