[논문]Quantum Dot-Based White Organic Light-Emitting Diodes Excited by a Blue OLED

Patel, Krishn Das; Juang, Fuh-Shyang; Wang, Hao-Xuan; Jian, Chong-Zhe; Chen, Jia-You

doi:10.3390/app12136365

[해외논문] Quantum Dot-Based White Organic Light-Emitting Diodes Excited by a Blue OLED 원문보기

Applied sciences, v.12 no.13, 2022년, pp.6365 -

Patel, Krishn Das (Department of Electro-Optical Engineering, National Formosa University, Huwei, Yunlin 63208, Taiwan) , Juang, Fuh-Shyang (Department of Electro-Optical Engineering, National Formosa University, Huwei, Yunlin 63208, Taiwan) , Wang, Hao-Xuan (Department of Electro-Optical Engineering, National Formosa University, Huwei, Yunlin 63208, Taiwan) , Jian, Chong-Zhe (Department of Electro-Optical Engineering, National Formosa University, Huwei, Yunlin 63208, Taiwan) , Chen, Jia-You (Department of Electro-Optical Engineering, National Formosa University, Huwei, Yunlin 63208, Taiwan)

Abstract ▼ AI-Helper

In this study, white organic light-emitting diodes (OLEDs) consisting of red quantum dots (RQD) and green quantum dots (GQD) were investigated. These are the most exciting new lighting technologies that have grown rapidly in recent years. The white OLED development processes used consisted of the following methods: (a) fabrication of a blue single-emitting layer OLED, (b) nanoimprinting into QD photoresists, and (c) green and red QD photoresists as color conversion layers (CCL) excited by blue OLEDs. To fabricate the blue OLED, the HATCN/TAPC pair was selected for the hole injection/transport layer on ITO and TPBi for the electron transport layer. For blue-emitting material, we used a novel polycyclic framework of thermally activated delayed fluorescence (TADF) material, ν-DABNA, which does not utilize any heavy metals and has a sharp and narrow (FWHM 28 nm) electroluminescence spectrum. The device structure was ITO/HATCN (20 nm)/TAPC (30 nm)/MADN: ν-DABNA (40 nm)/TPBi (30 nm)/LiF (0.8 nm)/Al (150 nm) with an emitting area of 1 cm × 1 cm. The current density, luminance, and efficiency of blue OLEDs at 8 V are 87.68 mA/cm2, 963.9 cd/m2, and 1.10 cd/A, respectively. Next, the bottom emission side of the blue OLED was attached to nanoimprinted RQD and GQD photoresists, which were excited by the blue OLED in order to generate an orange and a green color, respectively, and combined with blue light to achieve a nearly white light. In this study, two different excitation architectures were tested: BOLED→GQD→RQD and BOLED→RQD→GQD. The EL spectra showed that the BOLED→GQD→RQD architecture had stronger green emissions than BOLED→RQD→GQD because the blue OLED excited the GQD PR first then RQD PR. Due to the energy gap architectures in BOLED-GQD-RQD, the green QD absorbed part of the blue light emitted from the BOLED, and the remaining blue light penetrated the GQD to reach the RQD. These excited spectra were very close to the white light, which resulted in three peaks emitting at 460, 530, and 620 nm. The original blue CIE coordinates were (0.15, 0.07). After the excitation combination, the CIE coordinates were (0.42, 0.33), which was close to the white light position.

참고문헌 (33)

Leem Efficient and colour-stable hybrid white organic light-emitting diodes utilizing electron-hole balanced spacers J. Phys. D Appl. Phys. 2010 10.1088/0022-3727/43/40/405102 43 405102

상세보기
10.3390/app11062828 Jeong, B.S. (2021). Device Modeling of Quantum Dot-Organic Light Emitting Diodes for High Green Color Purity. Appl. Sci., 11.

상세보기
Yoon Highly luminescent and stable white light-emitting diodes created by direct incorporation of Cd-free quantum dots in silicone resins using the thiol group J. Mater. Chem. C 2015 10.1039/C5TC00660K 3 6908

상세보기
Choi Flexible quantum dot light-emitting diodes for next-generation displays Npj Flex. Electron. 2018 10.1038/s41528-018-0023-3 2 10

상세보기
Hu Inkjet printed uniform quantum dots as color conversion layers for full-color OLED displays Nanoscale 2020 10.1039/C9NR09086J 12 2103

상세보기
10.3390/nano10071327 Huang, Y.M., Singh, K.J., Liu, A.C., Lin, C.C., Chen, Z., Wang, K., Lin, Y., Liu, Z., Wu, T., and Kuo, H.C. (2020). Advances in Quantum-Dot-Based Displays. Nanomaterials, 10.

상세보기
Han A Highly Efficient Hybrid GaAs Solar Cell Based on Colloidal-Quantum-Dot-Sensitization Sci. Rep. 2014 10.1038/srep05734 4 5734

상세보기
Konstantatos Solution-Processed Quantum Dot Photodetectors Proc. IEEE 2009 10.1109/JPROC.2009.2025612 97 1666

상세보기
Pal High-Sensitivity p-n Junction Photodiodes based on PbS nanocrystal quantum dots Adv. Funct. Mater. 2012 10.1002/adfm.201102532 22 1741

상세보기
Koh Thiocyanate-Capped PbS nanocubes: Ambipolar transport enables quantum dot based circuits on a flexible substrate Nano Lett. 2011 10.1021/nl202578g 11 4764

상세보기
Algar Quantum dots as donors in fluorescence resonance energy transfer for the bioanalysis of nucleic acids, proteins, and other biological molecules Anal. Bioanal. Chem. 2008 10.1007/s00216-007-1703-3 391 1609

상세보기
Chen Wide-Range correlated color temperature light generation from resonant cavity hybrid quantum dot light-emitting diodes IEEE J. Sel. Top. Quantum Electron. 2015 10.1109/JSTQE.2015.2404877 21 23

상세보기
10.5772/intechopen.69177 Armăşelu, A. (2017). Recent Developments in Applications of Quantum-Dot Based Light-Emitting Diodes. Quantum-Dot Based Light-Emitting Diodes, IntechOpen.
Kim Effect of Solvents and Pressure on the Performance of Quantum Dot light Emitting Diodes Fabricated with Soft-Contact Transfer Printing SID Dig. 2018 10.1002/sdtp.12299 49 1643

상세보기
Yin Efficient and angle-stable white top-emitting organic light emitting devices with patterned quantum dots down-conversion films Org. Electron. 2018 10.1016/j.orgel.2018.02.004 56 46

상세보기
Kim High efficient OLED displays prepared with the air-gapped bridges on quantum dot patterns for optical recycling Sci. Rep. 2017 10.1038/srep43063 7 43063

상세보기
Im Strong microcavity effects in hybrid quantum dot/blue organic light-emitting diodes using Ag based electrode J. Lumin. 2018 10.1016/j.jlumin.2018.07.011 203 540

상세보기
Lee Highly Efficient, Color-Reproducible Full-Color Electroluminescent Devices Based on Red/Green/Blue Quantum Dot-Mixed Multilayer ACS Nano. 2015 10.1021/acsnano.5b05513 9 10941

상세보기
Li White organic light-emitting devices with CdSe/ZnS quantum dots as a red emitter J. Appl. Phys. 2005 10.1063/1.1921341 97 113501

상세보기
Hao A facile route to synthesize CdSe/ZnS thick-shell quantum dots with precisely controlled green emission properties: Towards QDs based LED applications Sci. Rep. 2019 10.1038/s41598-019-48469-7 9 12048

상세보기
Nguyen Fabrication and characterization of CdSe/ZnS quantum-dot LEDs Phys. Status Solidi (A) 2012 10.1002/pssa.201228066 209 1163

상세보기
10.5772/intechopen.69014 Heydari, N., Ghorashi, S.M.B., Han, W., and Park, H.H. (2017). Quantum Dot-Based Light Emitting Diodes (QDLEDs). New Progress. Quantum-Dot Based Light-Emitting Diodes, IntechOpen.
Kim Enhancement of Optical Efficiency in White OLED Display Using the Patterned Photoresist Film Dispersed with Quantum Dot Nanocrystals J. Disp. Technol. 2016 10.1109/JDT.2015.2503401 12 526

상세보기
Dayneko Application of CdSe/ZnS/CdS/ZnS Core-multishell Quantum Dots to Modern OLED Technology Mater. Today Proc. 2016 10.1016/j.matpr.2016.01.059 3 211

상세보기
Jeon Electrical and optical properties of blue organic light-emitting devices fabricated utilizing color conversion CdSe and CdSe/ZnS quantum dots embedded in a poly(N-vibyl carbazole) hole transport layer Opt. Mater. Express 2012 10.1364/OME.2.000663 2 663

상세보기
Uoyama Highly efficient organic light-emitting diodes from delayed fluorescence Nature 2012 10.1038/nature11687 492 234

상세보기
Miwa Blue organic light-emitting diodes realizing external quantum efficiency over 25% using thermally activated delayed fluorescence emitters Sci. Rep. 2017 10.1038/s41598-017-00368-5 7 284

상세보기
Rodella Low efficiency roll-off blue TADF OLEDs employing a novel acridine-pyrimidine based high triplet energy host J. Mater. Chem. C 2021 10.1039/D1TC03598C 9 17471

상세보기
Yin Recent Advances in Thermally Activated Delayed Fluorescent Polymer-Molecular Designing Strategies Front. Chem. 2020 10.3389/fchem.2020.00725 8 725

상세보기
10.1007/978-3-319-00176-0_24 Ma, D. (2017). White OLED Devices. Handbook of Advanced Lighting Technology, Springer.
Lee QD Display: A Game-Changing Technology for the Display Industry Inf. Disp. 2020 36 9

상세보기
Springer Cool white light-emitting three stack OLED structures for AMOLED display applications Opt. Express 2016 10.1364/OE.24.028131 24 28131

상세보기
Kim Optical efficiency enhancement in white organic light-emitting diode display with high color gamut using patterned quantum dot film and long pass filter Jpn. J. Appl. Phys. 2016 10.7567/JJAP.55.08RF01 55 08RF01

상세보기

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[해외논문] Quantum Dot-Based White Organic Light-Emitting Diodes Excited by a Blue OLED 원문보기

Abstract ▼ AI-Helper

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