Enhancement of Light Absorption in Photovoltaic Devices using Textured Polydimethylsiloxane Stickers

Hwang, Inchan; Choi, Deokjae; Lee, Sojeong; Seo, Ji Hoon; Kim, Ka‐Hyun; Yoon, Ilsun; Seo, Kwanyong

doi:10.1021/acsami.7b04525

Cited by 64 publications

(44 citation statements)

References 22 publications

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“…PDMS has good transparency with wavelength ranging from 240 to 1100 nm, and it is widely used for optoelectronic applications. 20 Moreover, PDMS is hydrophobic, which will help in protecting the Solar cell underwater, and it is inert, non-toxic, and non-flammable.…”

Section: Discussionmentioning

confidence: 99%

“…The encapsulation of the Solar cell was carried out to protect it from the underwater conditions as the electrical connections of the Solar cell may be short‐circuited in such an environment. In this work, the solar cell was encapsulated by PDMS (polydimethylsiloxane), which is a silicon‐based organic polymer with having unique advantages like hydrophobicity and transparency . A rectangular enclosure was designed and printed using the 3D printer device to encapsulate the Solar cell with PDMS.…”

Section: Methodsmentioning

confidence: 99%

“…In this work, the solar cell was encapsulated by PDMS (polydimethylsiloxane), 22 which is a silicon-based organic polymer with having unique advantages like hydrophobicity and transparency. 19,20 A rectangular enclosure was designed and printed using the 3D printer device to encapsulate the Solar cell with PDMS. Figure 3.…”

Section: Encapsulation Of Amorphous Silicon Solar Cellmentioning

confidence: 99%

“…In this work, the Solar cell has been encapsulated using polydimethylsiloxane (PDMS) owing to its excellent optical properties and being hydrophobic. PDMS has good transparency with wavelength ranging from 240 to 1100 nm, and it is widely used for optoelectronic applications . Moreover, PDMS is hydrophobic, which will help in protecting the Solar cell underwater, and it is inert, non‐toxic, and non‐flammable.…”

Section: Introductionmentioning

confidence: 99%

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Analysing consequence of solar irradiance on amorphous silicon solar cell in variable underwater environments

et al. 2020

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Summary Harvesting underwater Solar energy using photovoltaic (PV) technology leads to an innovative approach to utilize it in monitoring various underwater sensors, devices, or other autonomous systems using modern‐day power electronics. Another huge advantage of placing PV cells underwater comes from the fact that the water itself can provide cooling and cleaning for the cells. Such advantages come with many challenges and constraints due to the underwater spectral change and decrease in Solar radiation with an increase in water depth. In this work, an experimental set‐up has been realized to create an underwater environment and further characterized in the indoor environment using the Solar simulator. Moreover, the transfer of Solar radiation through water and the performance of amorphous silicon Solar cell underwater up to 0.2 m has been analysed in changing underwater environments. This investigation shows a better understanding of solar radiation underwater and the amorphous silicon solar cell underwater at shallow depths with considering the water depth up to 0.2 m, salinity 3.5%, total dissolved salts, and other impurities affecting the solar radiation and the performance of amorphous silicon Solar cell in underwater conditions. In addition to that, the maximum power output Pmax of amorphous silicon Solar cell is 0.0367 W at 0.2 m in the case of DI water. In contrast, in real seawater and artificial seawater with 3.5% salinity, it shows 0.0337 W and 0.0327 W, respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Encapsulation Of Amorphous Silicon Solar Cellmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysing consequence of solar irradiance on amorphous silicon solar cell in variable underwater environments

et al. 2020

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“…Inverted pyramidal shapes with dimensions in the order of visible light wavelength were prepared using soft elastomeric stamp technique and integrated into organic solar cell as an ARC . Random and patterned V‐grooves with dimensions much larger than the wavelength were also employed to enhance the photovoltaic performance of thin organic solar cells . These wavelength‐scale structured haze films are made using a large‐scale compatible route for future printable PVs.…”

Section: Light Trapping Schemesmentioning

confidence: 99%

Semiconductor Thin Film Based Metasurfaces and Metamaterials for Photovoltaic and Photoelectrochemical Water Splitting Applications

Ghobadi

Özbay

2019

Advanced Optical Materials

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throughput and large-scale compatibility. The photoactive material is generally composed of single or multiple semiconductor layers responsible for harvesting solar energy. This harvested solar irradiation can be used to generate electricity using photovoltaic (PV) devices, or it can be converted to chemical energy in the form of hydrogen which is the case for photoelectrochemical water splitting (PEC-WS). In both PV and PEC-WS applications, the ultimate goal is to establish an efficient photon capturing and electron collecting scheme to generate a huge number of photocarriers (including electron-hole pairs) with rational carrier dynamics (efficient charge generation, separation, and collection). This means that the device should be optically thick enough to generate high carrier's density and electrically thin enough to collect photogenerated carrier before they recombine. When light impinges a semiconductor surface, a part of the light is reflected back due to the mismatch between the air and the semiconductor layer refractive index. The rest will propagate within the bulk until it is fully absorbed by the semiconductor slab. The optical penetration depth (LPD) is defined as the depth at which the incident power falls to 1/e (≈37%) of its input value. This parameter differs from one semiconductor to another and it depends on the extinction coefficient (κ) of the In both photovoltaic (PV) and photoelectrochemical water splitting (PEC-WS) solar conversion devices, the ultimate aim is to design highly efficient, low cost, and large-scale compatible cells. To achieve this goal, the main step is the efficient coupling of light into active layer. This can be obtained in bulkysemiconductor-based designs where the active layer thickness is larger than light penetration depth. However, most low-bandgap semiconductors have a carrier diffusion length much smaller than the light penetration depth. Thus, photogenerated electron-hole pairs will recombine within the semiconductor bulk. Therefore, an efficient design should fully harvest light in dimensions in the order of the carriers' diffusion length to maximize their collection probability. For this aim, in recent years, many studies based on metasurfaces and metamaterials were conducted to obtain broadband and near-unity light absorption in subwavelength ultrathin semiconductor thicknesses. This review summarizes these strategies in five main categories: light trapping based on i) strong interference in planar multilayer cavities, ii) metal nanounits, iii) dielectric units, iv) designed semiconductor units, and v) trapping scaffolds. The review highlights recent studies in which an ultrathin active layer has been coupled to the above-mentioned trapping schemes to maximize the cell optical performance.

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Stretchable ITO‐Free Organic Solar Cells with Intrinsic Anti‐Reflection Substrate for High‐Efficiency Outdoor and Indoor Energy Harvesting

Huang

Ren

Zhang

et al. 2021

Adv Funct Materials

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Flexible photovoltaic devices are promising candidates for triggering the Internet of Things (IoT). However, the power conversion efficiencies (PCEs) of flexible organic photovoltaic (OPV) devices with high conductivity poly(3,4‐ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes on plastic are lagging behind the rigid devices due to the low transmittance of polyethylene terephthalate (PET)/PEDOT:PSS. Moreover, the poor stretchability of the commonly used plastic substrates largely hinders the practical application of wearable devices. Herein, a novel stretchable indium tin oxide (ITO)‐free OPV device with a surface‐texturing polydimethylsiloxane (PDMS) substrate for outdoor strong‐ and indoor dim‐light energy harvesting is reported. The high diffuse transmittance and haze effect of the substrate enable stretchable ITO‐free devices, yielding a high PCE of 15.3% under 1 sun illumination. More excitingly, the stretchable device based on textured PDMS/PEDOT:PSS maintains a comparable PCE of 20.5% (20.8% for the rigid device) under indoor light illumination. Notably, the stretchable device is much more insensitive to the light direction, maintaining 38.5% of the initial PCE at an extremely small incident angle of 10° (16.3% for glass/ITO‐based counterpart). The texturing stretchable substrate provides a new direction for achieving high performance and enhanced light utilization for the stretchable light‐harvesting device, suitable for indoor and outdoor applications.

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Enhancement of Light Absorption in Photovoltaic Devices using Textured Polydimethylsiloxane Stickers

Cited by 64 publications

References 22 publications

Analysing consequence of solar irradiance on amorphous silicon solar cell in variable underwater environments

Analysing consequence of solar irradiance on amorphous silicon solar cell in variable underwater environments

Semiconductor Thin Film Based Metasurfaces and Metamaterials for Photovoltaic and Photoelectrochemical Water Splitting Applications

Stretchable ITO‐Free Organic Solar Cells with Intrinsic Anti‐Reflection Substrate for High‐Efficiency Outdoor and Indoor Energy Harvesting

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