Low Emissivity Property of Amorphous Oxide Multilayer (SIZO/Ag/SIZO) Structure

Lee, Sang Yeol

doi:10.4313/teem.2017.18.1.13

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…Figure S2 also shows the difference in optical property between the OMO multilayer and the single IZO layer. The lower transmittance of the OMO multilayer than the single IZO layer at shorter wavelengths (below 450 nm) is due to absorption of light and interband electronic transitions at the interface between Ag and IZO layers . At longer wavelengths (above 700 nm), the transmittance of the OMO multilayer decreases because of high reflectance of the Ag layer.…”

Section: Resultsmentioning

confidence: 99%

“…The lower transmittance of the OMO multilayer than the single IZO layer at shorter wavelengths (below 450 nm) is due to absorption of light and interband electronic transitions at the interface between Ag and IZO layers. 18 At longer wavelengths (above 700 nm), the transmittance of the OMO multilayer decreases because of high reflectance of the Ag layer. Typically, thin metal films transmit visible light and reflect over the near-infrared wavelengths.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Light Extraction from p-Si Nanowires/n-IGZO Heterojunction LED by Using Oxide–Metal–Oxide Structured Transparent Electrodes

2017

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Heterojunction light-emitting diodes (LEDs) comprising p-type Si nanowires (p-Si NWs) and n-type indium gallium zinc oxide (n-IGZO) were fabricated with the different top electrode materials: Al, indium zinc oxide (IZO), and IZO/Ag/IZO oxide–metal–oxide (OMO) multilayer. All the LEDs exhibited typical rectifying behaviors of the p–n junction. Moreover, broad light-emission spectra in the visible range were observed because of the quantum confinement effect (QCE) of the Si NW and Si nanocrystals/nonstoichiometric Si oxide (SiO x ) (x < 2) interfaces. In comparison to the LEDs with Al and single IZO electrode, the LED with the OMO multilayer electrode exhibited an enhanced optical performance because the OMO multilayer had an excellent transmittance of 87.7% in the visible range with a low sheet resistance of 5.65 Ω/sq. Furthermore, by investigating the transmittance spectra of the single IZO and OMO multilayer electrodes as a function of the light incidence angle, the OMO multilayer electrode is confirmed to be more suitable for white light emission from p-Si NWs/n-IGZO heterojunction LED.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhanced Light Extraction from p-Si Nanowires/n-IGZO Heterojunction LED by Using Oxide–Metal–Oxide Structured Transparent Electrodes

2017

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“…In previous researches, the SIZO has reported some advantages to apply for transparent heater, such as amorphous structure in room temperature, high transparency and smooth surface roughness [16][17][18] . The smooth surface roughness prevents scattering of incident light, thereby obtaining high transmittance 19 . We investigated the electrical properties and optical properties of SIZO/Ag/SIZO (SAS) transparent mesh heater (TMH).…”

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confidence: 99%

Transparent heater with meshed amorphous oxide/metal/amorphous oxide for electric vehicle applications

Lee

2020

Sci Rep

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for electric vehicle application, one of the problems to be solved is defrosting or defogging a windshield or a side mirror without gas-fired heaters. In this paper, we report on a high performance of transparent heater with meshed amorphous-SiinZno (SiZo)/ Ag/ amorphous-SiinZno (SiZo) (SAS) for pure electric vehicles. We have adopted amorphous oxide materials like SIZO since SIZO is well known amorphous oxide materials showing high transparency and smooth surface roughness. With the mesh processing technology, a transparent electrode with high transmittance of 91% and low sheet resistance of 13.8 Ω/ϒ was implemented. When a 10 V supply voltage is applied to transparent heater, the transparent heater on glass substrate was heated up to 130 o C in just 5 seconds and then reached to 250 o c after tens of seconds due to the low sheet resistance. In addition, the SAS transparent meshed heater (TMH) showed high stability under cycling test and long time working stability test. In the context of rapid development of Internet of Things (IoT) and 5 G communications, the gas-free electric vehicle is once again became a main topic of recent research. In order to prepare for the era of electrified transportation, the researcher has focused on the auto parts technology that is used by fuel-free electric vehicles, for example, the transparent heater applied in defrosting or defogging a windshield or a side mirror in the winter 1. High transparency in visible region and high electrical conductivity are two important factors of transparent heaters, and this technology is based on the studies of transparent conductive electrode (TCE). Compared with the TCEs that are used for display applications or solar energy applications, for the purpose of rapid heating, transparent heaters are suggested to have better electrical conductivity 2. Electrical properties of TCEs are usually evaluated by measuring the thin films' resistivity, which could be characterized by the reciprocal product of carrier concentration and mobility 3. For instance, In-Sn-O (ITO) is the dominant material in the TCE industry and also be used in the recent manufacturing process of the side mirror 4. The standard electrical properties of ITO thin films, such as carrier concentration, mobility and corresponding resistivity are about 10 20 cm −3 , 10 cm 2 /V•s and 10 −4 Ω•cm in magnitude 5. It can be seen from the previous studies of TCEs that an ideal method to improve the conductivity of TCE thin films is to limit the carrier concentration and increase the carrier mobility simultaneously 6. Nevertheless, until now, it is too difficult to improve the mobility to 10 3 cm 2 /V•s in magnitude by using the conventional TCE materials 6 : for example, transparent conductive oxides (TCOs), such as ITO, aluminum-zinc-oxide (AZO) 7 , gallium-zinc-oxide (GZO) 2. Their mobility will be limited as a result of carriers scattering when carrier concentration is greater than 10 20 cm −3 8 ; otherwise, nanowire networks such as Ag nanowire (Ag NW) 9 , carbon nanotube (CNT) 10 , whos...

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Light‐Wavelength‐Selective Transparent ITO/Ag/ITO/Ag/ITO Structure for Functional Energy Applications

Choi,

Lee,

Ghosh

et al. 2023

Solar RRL

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Is it possible to achieve efficient energy control without it being visible? If it could, it would enable human to produce energy in a transparent manner and manage energy usage intelligently by reducing consumption through building and vehicle windows, and other structures. Herein, thin films are created that are highly transparent and can filter light by selecting specific wavelengths. The films consist of multiple layers of ITO/Ag/ITO/Ag/ITO (IAIAI) that are designed to reflect light selectively using the Bragg reflection effect. These films are able to block an average of 89.6% of near‐infrared light in the 800–1400 nm range, while maintaining a high optical transparency of 69.2% (±0.1%) at 550 nm with an excellent sheet resistance value of 1.06 Ω □−1. The IAIAI structure is also used as electrodes for transparent photovoltaic (TPV) devices, allowing for the collection of photogenerated carriers while ensuring overall optical transparency. ZnO/NiO‐based TPV devices using IAIAI films as transparent conducting electrodes are found to have a high open‐circuit voltage value of 271 mV with a short‐circuit current density value of 1.55 mA cm−2. Thus, the multifunctional IAIAI films offer a range of possibilities for transparent energy devices.

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Low Emissivity Property of Amorphous Oxide Multilayer (SIZO/Ag/SIZO) Structure

Cited by 10 publications

References 14 publications

Enhanced Light Extraction from p-Si Nanowires/n-IGZO Heterojunction LED by Using Oxide–Metal–Oxide Structured Transparent Electrodes

Enhanced Light Extraction from p-Si Nanowires/n-IGZO Heterojunction LED by Using Oxide–Metal–Oxide Structured Transparent Electrodes

Transparent heater with meshed amorphous oxide/metal/amorphous oxide for electric vehicle applications

Light‐Wavelength‐Selective Transparent ITO/Ag/ITO/Ag/ITO Structure for Functional Energy Applications

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