ZnS/Ag/ZnS coating as transparent anode for organic light emitting diodes

Pang, Hongqi; Yuan, Yongbo; Zhou, Yun; Lian, Jiarong; Cao, Ling-Fang; Zhang, Jie; Zhou, Xiang

doi:10.1016/j.jlumin.2006.01.232

Cited by 42 publications

(18 citation statements)

References 16 publications

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“…The Ag/ZnS/Ag multilayer film composition has been investigated and reported by previous researchers. [27][28][29] The optical properties of Ag/ZnS/Ag multilayer structure usually depend on the positions of the metal layers and on the thicknesses of metal and dielectric layers. The photoluminescence (PL) emission of the surface plasmon metals (Ag, Al, etc.)…”

Section: Introductionmentioning

confidence: 99%

Fabrication of highly efficient resonant structure assisted ultrathin artificially stacked Ag/ZnS/Ag multilayer films for color filter applications

2015

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We introduce a novel strategy for the fabrication of mechanically and thermally stable highly efficient resonant structure assisted ultrathin artificially stacked Ag/ZnS/Ag multilayer films on cleaned glass substrates using the thermal evaporation technique. The application of fabricated color filters has been studied in the visible range. These multilayers have good adhesion to each other and to the glass substrate, resulting in mechanical and thermal stability. The stability has been examined by the ''Scotchtape'' test and the ultrasonication process at 37 kHz frequency and at 40 1C temperature as well as by thermogravimetric analysis (TGA). The results of the structural analysis, surface morphology and atomic force microscopy of these filters confirm the good crystallinity with a low value of surface roughness.The effect of thickness of artificially stacked metal (Ag) and dielectric (ZnS) layers has been examined in terms of optical properties by several spectroscopic techniques. These ingenious filters exhibit a large and deep stop band in the visible wavelength region. Thus blue, green and red color filters, centered at 460, 540 and 620 nm having bandwidths of about 25, 44 and 35 nm, respectively, were achieved. Moreover, the statistical outcomes of all the three filters (blue, green and red) show that the peak transmission efficiencies are consistently 73%, 70% and 63%, respectively. Additionally, the effect of different angles of incidence on the transmittance spectra has also been presented. Hence, the obtained results strongly suggest that these filters can be potentially used for tuning the color of optical filters according to the desired applications.

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Section: Introductionmentioning

confidence: 99%

Fabrication of highly efficient resonant structure assisted ultrathin artificially stacked Ag/ZnS/Ag multilayer films for color filter applications

2015

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“…The devices were then completed by cathode deposition by thermal evaporation through a shadow mask. Each of the six devices on each substrate had an active area of 20 mm 2 , which was defined using a shadow mask. The cathode consisted of a thin (%4.6 nm) barium layer capped with a thick (100 nm) aluminium top contact.…”

Section: Device Fabricationmentioning

confidence: 99%

“…[1][2][3][4] The growing interest in alternate transparent conducting electrodes is part of a general move away from indium tin oxide (ITO), which is a response to both a perceived future limit in indium supply, as well as issues relating to the limited flexibility of ITO electrodes. Other flexible alternatives, such as graphene and silver nanowire composites, 5,6 have been shown to work well but are less able to support the resonant behaviour that can lead to gains in output, and colour sculpting and directionality that is of interest to OLED development.…”

Section: Introductionmentioning

confidence: 99%

AZO/Ag/AZO anode for resonant cavity red, blue, and yellow organic light emitting diodes

Gentle

Yambem

Burn

et al. 2016

Journal of Applied Physics

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Indium tin oxide (ITO) is the transparent electrode of choice for organic light-emitting diodes (OLEDs). Replacing ITO for cost and performance reasons is a major drive across optoelectronics. In this work, we show that changing the transparent electrode on red, blue, and yellow OLEDs from ITO to a multilayer buffered aluminium zinc oxide/silver/aluminium zinc oxide (AZO/Ag/AZO) substantially enhances total output intensity, with better control of colour, its constancy, and intensity over the full exit hemisphere. The thin Ag containing layer induces a resonant cavity optical response of the complete device. This is tuned to the emission spectra of the emissive material while minimizing internally trapped light. A complete set of spectral intensity data is presented across the full exit hemisphere for each electrode type and each OLED colour. Emission zone modelling of output spectra at a wide range of exit angles to the normal was in excellent agreement with the experimental data and hence could, in principle, be used to check and adjust production settings. These multilayer transparent electrodes show significant potential for both eliminating indium from OLEDs and spectrally shaping the emission.

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“…1 Metallic sulfides can protect the junction region from deposition or sputtering damage during p-type deposition. These compounds can also modify the surface of solar cell absorbers and reduce the lattice mismatch and difference in bandgap energy between n-and Ó 2015 The Minerals, Metals & Materials Society including Cu(In,Ga)(SeS) 2 , CuInSe 2 , and Cu(In,-Ga)Se 2 devices.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposited ZnS Precursor Layer with Improved Electrooptical Properties for Efficient Cu2ZnSnS4 Thin-Film Solar Cells

Mkawi

Ibrahim

Ali

et al. 2015

Journal of Elec Materi

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Zinc sulfide (ZnS) thin films were prepared on indium tin oxide-coated glass by electrodeposition using aqueous zinc sulfate, thiourea, and ammonia solutions at 80°C. The effects of sulfurization at temperatures of 350°C, 400°C, 450°C, and 500°C on the morphological, structural, optical, and electrical properties of the ZnS thin films were investigated. X-ray diffraction analysis showed that the ZnS thin films exhibited cubic zincblende structure with preferred (111) orientation. The film crystallization improved with increasing annealing temperature. Field-emission scanning electron microscopy images showed that the film morphology became more compact and uniform with increasing annealing temperature. The percentage of sulfur in the ZnS thin films increased after sulfurization until a stoichiometric S/Zn ratio was achieved at 500°C. The annealed films showed good adhesion to the glass substrates, with moderate transmittance (85%) in the visible region. Based on absorption measurements, the direct bandgap increased from 3.71 eV to 3.79 eV with annealing temperature, which is attributed to the change of the buffer material composition and suitable crystal surface properties for effective p-n junction formation. The ZnS thin films were used as a buffer layer in thin-film solar cells with the structure of soda-lime glass/Mo/Cu 2 ZnSnS 4 /ZnS/ZnO/Al grid. The best solar cell efficiency was 1.86%.

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ZnS/Ag/ZnS coating as transparent anode for organic light emitting diodes

Cited by 42 publications

References 16 publications

Fabrication of highly efficient resonant structure assisted ultrathin artificially stacked Ag/ZnS/Ag multilayer films for color filter applications

Fabrication of highly efficient resonant structure assisted ultrathin artificially stacked Ag/ZnS/Ag multilayer films for color filter applications

AZO/Ag/AZO anode for resonant cavity red, blue, and yellow organic light emitting diodes

Electrodeposited ZnS Precursor Layer with Improved Electrooptical Properties for Efficient Cu2ZnSnS4 Thin-Film Solar Cells

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