An alternative composite electrode for efficient organic light-emitting diodes

Luo, Dian; Chiang, Tsung-Che; Chan, Chi Hao; Chiu, Po Chen; Chiu, Hao Hsuan; Ku, Chia Hao; Chang, Chih-Hao; Guo, Jhih Yan; Liu, Shun Wei; Su, Hai Ching

doi:10.1016/j.orgel.2020.105844

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…Likewise, we focus on developing alternative GZO-based materials suitable for flexible applications, including Ti-doped GZO (TGZO), Si-doped GZO (SGZO), and Mo-doped GZO (MGZO). 15–18 As a result, we found that MGZO has excellent performance potential because of its outstanding optoelectronic properties.…”

Section: Introductionmentioning

confidence: 83%

A transparent composite electrode composed of AgCr and Mo-doped GaZnO to realize flexible bottom-emitting OLEDs

Chiu

Huang

et al. 2023

J. Mater. Chem. C

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Section: Introductionmentioning

confidence: 83%

A transparent composite electrode composed of AgCr and Mo-doped GaZnO to realize flexible bottom-emitting OLEDs

Chiu

Huang

et al. 2023

J. Mater. Chem. C

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“…The EL spectra of the devices are akin to the corresponding PL spectrum, which confirms that the energy has been well transferred from the host to the guest and the excitons have not diffused to adjacent layers. [32] Devices exhibited an emission range from sky-blue to deep-blue. The corresponding CIE coordinates of devices A1, B1, C1 and D1 calculated from the EL spectra are respectively recorded to be (0.20, 0.28), (0.18, 0.22), (0.17, 0.18) and (0.20, 0.17).…”

Section: Compoundmentioning

confidence: 99%

Dicyano‐Imidazole: A Facile Generation of Pure Blue TADF Materials for OLEDs

Liu

Luo

et al. 2021

Chemistry A European J

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A series of dicyano-imidazole-based molecules with thermally activated delayed fluorescence (TADF) properties were synthesized to obtain pure blue-emitting organic lightemitting diodes (OLEDs). The targeted molecules used dicyano-imidazole with a short-conjugated system as the electron acceptor to strong intermolecular π-π interactions, and provide a relatively shallow energy level of the lowest unoccupied molecular orbital (LUMO). The cyano group was selected to improve imidazole as an electron acceptor due to its prominent electron-transporting characteristics. Four different electron donors, that is, 9,9-dimethyl-9,10-dihydroacridine (DMAC), 10H-spiro(acridine-9,9'-fluoren) (SPAC), and 9,9diphenyl-9,10-dihydroacridine (DPAC), were used to alternate the highest occupied molecular orbital (HOMO) energy level to tune the emission color further. The crowded molecular structure in space makes the electron donor and acceptor almost orthogonal, reducing the energy gap (ΔE ST ) between the first excited singlet (S 1 ) and the triplet (T 1 ) states and introducing significant TADF property. The efficiencies of the blue-emissive devices with imM-SPAC and imM-DMAC obtained in this work are the highest among the reported imidazole-based TADF-OLEDs, which are 13.8 % and 13.4 %, respectively. Both of Commission Internationale de l'Eclairage (CIE) coordinates are close to the saturated blue region at (0.17, 0.18) and (0.16, 0.19), respectively. Combining these tailor-made TADF compounds with specific device architectures, electroluminescent (EL) emission from sky-blue to deep-blue could be achieved, proving their great potential in EL applications.

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“…S10b, ESI †), manifesting that the excitons of SAC-BOC should be nicely confined within the EML. 26 Gratifyingly, the device emits an efficient deep-blue with l EL of 460 nm and CIE x,y of (0.144, 0.129), together with a relatively narrow FWHM of 57 nm and an outstanding EQE max of 15.3% (Fig. 4), which is among the best SAC-based deep-blue OLEDs (Table S6, ESI †).…”

mentioning

confidence: 95%