Multifunctional polymers with biomimetic compound architectures via nanoporous AAO films for efficient solar energy harvesting in dye-sensitized solar cells

Dudem, Bhaskar; Leem, Jung Woo; Lim, Joo Ho; Lee, Soo Hyun; Yu, Jae Su

doi:10.1039/c5ra16276a

Cited by 17 publications

(11 citation statements)

References 53 publications

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“…On the other hand, approaches to enhance the conversion efficiency of various solar cells or modules by employing the highly transparent antireflection (AR) layers on their external-facing surfaces of transparent substrates (e.g., glasses, plastics, etc.) have also been proposed. − The use of AR layer is more practical and facile to enhance light absorption in the active layer of the solar cells by reducing the surface reflection losses over the wide ranges of light incident wavelengths and angles. Additionally, the AR layer can be also utilized to protect the solar cells from the exposure to external impact, heat, ultraviolet (UV) radiation, and corrosive acid rain in harsh outdoor environments.…”

Section: Introductionmentioning

confidence: 99%

Boosting Light Harvesting in Perovskite Solar Cells by Biomimetic Inverted Hemispherical Architectured Polymer Layer with High Haze Factor as an Antireflective Layer

Kim

Dudem

Jung

et al. 2018

ACS Appl. Mater. Interfaces

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Biomimetic microarchitectured polymer layers, such as inverted hemispherical architectured (IHSA)-polydimethylsiloxane (PDMS) and hemispherical architectured (HSA)-PDMS layers, were prepared by a simple and cost-effective soft-imprinting lithography method via a hexagonal close-packed polystyrene microsphere array/silicon mold. The IHSA-PDMS/glass possessed superior antireflection (AR) characteristics with the highest/lowest average transmittance/reflectance ( T/ R) values of approximately 89.2%/6.4% compared to the HSA-PDMS/glass, flat-PDMS/glass, and bare glass ( T/ R ∼88.8%/7.5%, 87.5%/7.9%, and 87.3%/8.8%, respectively). In addition, the IHSA-PDMS/glass also exhibited a relatively strong light-scattering property with the higher average haze ratio ( H) of ∼38% than those of the bare glass, flat-PDMS/glass, and HSA-PDMS/glass (i.e., H ≈ 1.1, 1.7, and 34.2%, respectively). At last, to demonstrate the practical feasibility under light control of the solar cells, the IHSA-PDMS was laminated onto the glass substrates of perovskite solar cells (PSCs) as an AR layer, and their device performances were explored. Consequently, the short-circuit current density of the PSCs integrated with the IHSA-PDMS AR layer was improved by ∼17% when compared with the device without AR layer, resulting in the power conversion efficiency (PCE) up to 19%. Therefore, the IHSA-PDMS is expected to be applied as an AR layer for solar cells to enhance their light absorption as well as the PCE.

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Section: Introductionmentioning

confidence: 99%

Boosting Light Harvesting in Perovskite Solar Cells by Biomimetic Inverted Hemispherical Architectured Polymer Layer with High Haze Factor as an Antireflective Layer

Kim

Dudem

Jung

et al. 2018

ACS Appl. Mater. Interfaces

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“…Furthermore, the photon flux density (PFD), which is defined as the number of photons transmitted through the sample, , of all the above samples was also calculated to explore their transmittance properties at specific wavelengths of the solar spectrum (Figure e). The PFD also provides the information that the solar cell could generate a photocurrent at specific wavelengths in the solar spectrum.…”

Section: Resultsmentioning

confidence: 99%

High-Efficiency and Thermally Sustainable Perovskite Solar Cells with Sandpaper-Aided Flexible Haze/Antireflective Films

Dudem

Jin

Mule

et al. 2019

ACS Sustainable Chem. Eng.

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A sandpaper-aided haze film (SAHF) is fabricated by a single-step, facile, and cost-effective soft-imprint lithography technique via commercially available and inexpensive sandpaper master molds. Such a low-priced SAHF exhibited a superior antireflective ability with an average transmittance of 93.7% in the wavelength range of 350–800 nm. It also possesses a high diffuse transmittance and very high haze transmission values of approximately 84.3% and 89.8%, respectively. Resultantly, laminating the SAHF on the transparent side of perovskite solar cells (PSCs) remarkably enhances the light absorption into their active layer and also improves the light-harvesting ability. Thus, the power conversion efficiency of PSC is enhanced from 17.07% to 20.34% by laminating the SAHF on the surface of the cell. In addition, the hydrophobicity and thermal resistance of SAHF is also exploited to stabilize (or maintain) the efficiency of PSCs for a long-term period under dark and solar irradiation conditions.

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“…As a result, the optical path length of the incident light is elongated, and hence the light absorption in the active layer of the solar cell is also improved by the patterned glass. Indeed, the high haze optical property due to the light scattering effect would positively enhance the power conversion efficiency of the solar cells with the UNP patterned glass compared to the bare cover glass [35][36][37]. This is especially important for thin film devices.…”

Section: (A)mentioning

confidence: 99%

Nanopyramid Structures with Light Harvesting and Self- Cleaning Properties for Solar Cells

Amalathas¹,

Alkaisi²

2018

Emerging Solar Energy Materials

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In this chapter, inverted and upright nanopyramid structures with light-harvesting properties and self-cleaning hydrophobic surfaces suitable for solar cells are presented. Periodic nanopyramid structures with 400-700 nm features were fabricated using interference lithography and combined dry and wet etching processes. The inverted nanopyramids (INP) were applied at the front side of the solar cells using UV nanoimprint lithography. These structures provided effective light-trapping properties and led to oblique angle light scattering and a significant reduction in reflectance resulting in higher power conversion efficiency. The second type, the periodic upright nanopyramid (UNP) structures were applied on a glass substrate by UV nanoimprint process. The glass cover is also utilized as a protective encapsulant front layer. The use of the upright nanopyramid structured cover glass in the encapsulated solar cell has also enhanced the power conversion efficiency due to the antireflection and strong light-scattering properties compared to the bare cover glass. In addition, the upright nanopyramid structured cover glass exhibited excellent self-cleaning of dust particles by rolling down water droplets. These results suggest that the nanopyramid structures with light-harvesting and self-cleaning properties can improve the performance of different types of solar cells, including thin films and glass-based PVs.

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Multifunctional polymers with biomimetic compound architectures via nanoporous AAO films for efficient solar energy harvesting in dye-sensitized solar cells

Cited by 17 publications

References 53 publications

Boosting Light Harvesting in Perovskite Solar Cells by Biomimetic Inverted Hemispherical Architectured Polymer Layer with High Haze Factor as an Antireflective Layer

Boosting Light Harvesting in Perovskite Solar Cells by Biomimetic Inverted Hemispherical Architectured Polymer Layer with High Haze Factor as an Antireflective Layer

High-Efficiency and Thermally Sustainable Perovskite Solar Cells with Sandpaper-Aided Flexible Haze/Antireflective Films

Nanopyramid Structures with Light Harvesting and Self- Cleaning Properties for Solar Cells

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