The effects of UV-ozone treated ultra-thin Li2CO3-doped NiO film as the anode buffer layer on the electrical characteristics of organic light-emitting diodes

Lu, Hsin Wei; Kao, Po Ching; Chu, Sheng Yuan

doi:10.1016/j.jallcom.2016.04.271

Cited by 5 publications

(2 citation statements)

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“…Figure 4a,b show that the surfaces of electrochromic films existed some slightly irregular boundaries. In Figure 6c, some massive grains, which will be identified and discussed below, on the surface of the Film C can be found [8]. In Figure 6d, there are no obvious massive grains on the surface, the possible reason might be due that the sputtering rate of LiNiO 15 target is too slow.…”

Section: Preparation Of Ecd Smentioning

confidence: 94%

“…If the coloring characteristics and ion storage capacity of the NiO thin film can be enhanced, the application of the ECD or CECD devices must be greatly promoted. According to the literatures, the characteristics of electrochromic films can be effectively enhanced by Li-doping [6][7][8][9][10][11]. The Li + ions can provide fast charge transfer carriers as ion transportation in the ECDs [12].…”

Section: Introductionmentioning

confidence: 99%

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Electrochromic Properties of Li- Doped NiO Films Prepared by RF Magnetron Sputtering

et al. 2020

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In this study: various amounts of Li2CO3 powders were mixed into NiO powders to fabricate the Li- added NiO (NiO:Li) targets. The electrochromic films of LiNiO were deposited on ITO glasses at room temperature (R.T.) by RF magnetron sputtering. The thicknesses of electrochromic LiNiO films were kept about 200 nm. The ECD device was constructed with structure of Glass/ITO/ LiNiO /Gel-electrolyte/ITO/Glass. The results indicated that the optimal electrochromic characteristics of Li0.16Ni0.58O thin films could be obtained by 10 wt% Li2CO3 added NiO target. The optimized characteristics of ECDs could be achieved with the intercalation charge (Q) of 11.93 mC/cm2, the optical density (ΔOD) of 0.38, the transmittance change (ΔT) of 44.1%, and the coloring efficiency (η) of 31.8 cm2/C at the wavelength of 550 nm by setting voltage of 3.2V. The results demonstrate that the doping of Li+ ions into NiO films can effectively enhance the characteristics of ECD devices. The reason may due to the increased amount of charge stored in the electrochromic devices (ECDs).

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Section: Preparation Of Ecd Smentioning

confidence: 94%