An Analysis of ZnS:Cu Phosphor Layer Thickness Influence on Electroluminescence Device Performances

Chansri, Pakpoom; Arunrungrusmi, Somchai; Yuji, Toshifumi; Mungkung, Narong

doi:10.1155/2017/6752984

Cited by 14 publications

(8 citation statements)

References 24 publications

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“…However, the emission layer thickness dependency appeared to diminish at higher strain values, resulting in a larger decrease in the emission intensity later. 38 It is noteworthy that both electroluminescent fibers and electrode fibers could be easily bent and twisted, and no visible damage was observed after deformation (Figures S7ab and S8). The relative capacitance of the electrode fiber changed to 337% when it was stretched to 300% (Figure S10).…”

Section: Resultsmentioning

confidence: 94%

“…In the lower strain range, the decreased emission layer thickness may be linked to a smaller reduction of the luminance because it contributes to the larger electrical field. However, the emission layer thickness dependency appeared to diminish at higher strain values, resulting in a larger decrease in the emission intensity later . It is noteworthy that both electroluminescent fibers and electrode fibers could be easily bent and twisted, and no visible damage was observed after deformation (Figures S7ab and S8).…”

Section: Resultsmentioning

confidence: 97%

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Electroluminescent Fabric Woven by Ultrastretchable Fibers for Arbitrarily Controllable Pattern Display

Zhong

Tang

et al. 2021

ACS Appl. Mater. Interfaces

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Flexible textile displays can be revolutionary for information transmission at any place and any time. Typically, textile displays are fabricated by traditional rigid electronics that sacrifice mechanical flexibility of devices or by flexible electronics that do not have an appropriate choice to arbitrarily control single pixels. This work reports on an electroluminescent fabric woven by ultrastretchable fibers (electroluminescent fibers up to 400% stretch, electrode fibers up to 250% stretch), which can exhibit the pixel-based arbitrarily controllable pattern display by a mobile phone application. To realize ultrastretchability, we made these fibers by encapsulating liquid metals on a polyurethane core (high elasticity). To realize arbitrary control, the design shows a plain-woven structure comprising ZnS-based electroluminescent fibers and perpendicular electrode fibers. The cross-points between the electroluminescent fiber and the electrode fiber form pixels that can be switched on or off independently and can further form the pixel-based arbitrarily controllable pattern display. By doping with different elements, ZnS-based electroluminescent fibers can emit green, blue, or yellow lights. Meanwhile, the fabrication of these fibers employs dip-coating, a scalable manufacturing method without high temperature or vacuum atmosphere. These fabrics show great potential in a wide range of applications such as wearable electronic devices, healthcare, and fashion design.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 97%

Electroluminescent Fabric Woven by Ultrastretchable Fibers for Arbitrarily Controllable Pattern Display

Zhong

Tang

et al. 2021

ACS Appl. Mater. Interfaces

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“…It should be noted that the phosphor was deposited by insulator for two times. Furthermore, the Ag electrode deposited on the insulator with a size of 2:5 × 2:5 cm 2 was dried at 130°C for 25 min [39,42,43]. In this work, the morphology properties of IZO film deposited on PET substrate by oxygen plasma treatment for the EL device were studied by atomic force microscope (AFM: Prak, X-100).…”

Section: Preparation Of Izo Film Deposited On Pet By Oxygenmentioning

confidence: 99%

High Performance of IZO Coated on PET Substrate for Electroluminescence Device Using Oxygen Plasma Treatment

Poonthong

Mungkung

Arunrungrusmi

et al. 2021

International Journal of Photoenergy

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Thin films of indium zinc oxide (IZO) were deposited on polyethylene terephthalate (PET) substrate with varying plasma power (from 100 W to 300 W) using the radio-frequency (RF) magnetron sputtering technique and electroluminescence (EL) devices. The IZO films that were obtained from this process were treated with oxygen plasma powers using the plasma-enhanced chemical vapor deposition (PECVD) system. After this treatment, the microstructural, electrical, and optical properties of IZO films were observed and reported. The result showed that the IZO/PET films was fabricated at the lowest resistivity ( 2.83 × 10 − 3 Ω · cm ), while the optical characterization displayed the maximum transmittance of 95% in the visible region with a smooth morphology and good crystalline structured, affected by the 300 W of plasma power with the optimum carrier concentration ( 4.93 × 10 21 c m − 3 ) and hall mobility (42.12 cm2/V·sec), respectively. The luminance properties and the EL efficiency were also investigated and shown a 300 W highest point of plasma power with 84 cd/m2 and 0.924 lm/W. The film properties were found responsible for producing and improving the performance of IZO/PET substrate, suitable for displaying the devices.

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“…These materials oxides are semiconductors, which has a wide band gap, there are also other advantages including good insulators, transparent electronics, and photonics. These oxide materials have been widely used in many flexible devices, for instance, flexible solar cells, electroluminescence (EL), thin film transistors (TFT) and others [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Optical and electrical properties of Ti-doped In2O3 film deposited on flexible transparent substrates by ion beam assisted deposition under different oxygen flow rate

Chansri

Pooyodying

Sung

2021

Preprint

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A flexible transparent is an important technology to improve flexible electronic and flexible display devices. Actually, the deposition process of films coated on a flexible substrate will no more than 200 °C or room temperature. In order to achieve high transmission and lower resistivity, this paper reported the thin films of ITiO deposited by ion beam-assisted electron beam under the condition of different oxygen flow rates at room temperature. The electrical, optical, and morphological properties of ITiO films were investigated under the condition of different oxygen flow rates. At the 30 sccm oxygen flow rate, the surface roughness was 5.4 nm, high transmittance and optical bandgap of ITiO films were 89.2% at 470 nm wavelengths and 3.28 eV, respectively. The lowest resistivity of film was 2.1 × 10-4 Ω-cm at 30 sccm oxygen flow rate. Furthermore, the carrier concentration and hall mobility were experimentally investigated, which presented by 42.8 cm2/Vsec and 9.23 × 1020 cm-3. The use ITiO film coated on a flexible substrate with ion beam-assisted electron beam evaporation at room temperature can improve the lower resistivity and high transmission of the flexible device. It was also demonstrated that ITiO film with ion beam-assisted deposition technique is suitable for flexible electronic and flexible display devices.

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An Analysis of ZnS:Cu Phosphor Layer Thickness Influence on Electroluminescence Device Performances

Cited by 14 publications

References 24 publications

Electroluminescent Fabric Woven by Ultrastretchable Fibers for Arbitrarily Controllable Pattern Display

Electroluminescent Fabric Woven by Ultrastretchable Fibers for Arbitrarily Controllable Pattern Display

High Performance of IZO Coated on PET Substrate for Electroluminescence Device Using Oxygen Plasma Treatment

Optical and electrical properties of Ti-doped In2O3 film deposited on flexible transparent substrates by ion beam assisted deposition under different oxygen flow rate

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