Manufacture of light-trapping (LT) films by ultraviolet (UV) irradiation and their applications for polymer solar cells (PSCs)

Lin, Jianming; Chu, Wei-Ping; Juang, Fuh−Shyang; Chen, Nien-Po; Tsai, Yuh‐Shyan; Chen, Cheng‐Chieh; Chen, Chen-Ming; Liu, Lung-Chang

doi:10.1016/j.matlet.2011.09.030

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…The emission spectrum intensities of the other emission lines were similar and their sum approached the 206.2 nm emission spectrum intensity. These results were in agreement to those in literature 25 . Fig.…”

Section: Resultssupporting

confidence: 94%

Photolysis of Dimethyl Phthalate via Microwave Discharge Electrodeless Iodine Lamp: Parameters, Feasibility and Mechanism

Zhao¹

2013

Asian J. Chem.

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This study reports, the photolysis of dimethyl phthalate using 206.2 nm UV light emitted from a locally made novel microwave discharge electrodeless iodine lamp (MDEIL). Optimal preparation parameters of MDEIL were determined as follows: iodine amount, 0.5 mg; krypton pressure, 2 torr and input power, 65 W. Removal efficiency of dimethyl phthalate reached 97.5 % at 20 min irradiation time and 20 mg L -1 initial dimethyl phthalate concentration. A possible mechanism of the dimethyl phthalate photolysis may involve electron transition reactions and reactions with hydroxyl radicals. The intermediates were identified as phthalic acid and 2-hydroxyl acid methyl esters. Results from this study may help promote further studies on the feasibility of MDEIL to decompose more aqueous organic contaminants, including other refractory contaminants.

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Section: Resultssupporting

confidence: 94%

Photolysis of Dimethyl Phthalate via Microwave Discharge Electrodeless Iodine Lamp: Parameters, Feasibility and Mechanism

Zhao¹

2013

Asian J. Chem.

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“…The dozens of micrometers of photoresist in between the textured front surface and the substrate represent the encapsulation and the glass cover of a solar module. More details can be found in the work of Lin et al and Hünig et al…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, solution processing has been used for the fabrication of front surface textures . Micron‐scale front surface textures were already applied to crystalline silicon solar cells, thin‐film silicon based solar cells, organic solar cells, Cu(In,Ga)Se 2 (CIGS) based thin‐film solar cells, perovskite solar cells, as well as perovskite‐silicon tandem solar cells . The ray‐optics‐based working principle, of micron‐scale front surface textures is illustrated in Figure .…”

Section: Introductionmentioning

confidence: 99%

Micro‐cone textures for improved light in‐coupling and retroreflection‐inspired light trapping at the front surface of solar modules

Dottermusch

Schmager

Klampaftis

et al. 2019

Progress in Photovoltaics

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Micron-scale textures at the front surface of solar modules have been reported to improve the current generation by both enhancing light in-coupling as well as by reducing light out-coupling via back-reflection, similar to the retroreflective effect.Whereas the general working principle and advantages of these textures have been described previously, here, the interplay of the reflection properties of different substrates with the enhancement effects is analyzed for textures of conical geometry.The study takes into consideration the incident light of arbitrary angle of incidence as well as the overall energy yield. Supported by optical simulations, periodic microcone textures were optimized and prototyped based on direct laser writing and a scalable replication process. Micron-scale textures with cones of various aspect ratios were examined on mono-crystalline silicon (c-Si) solar cells; an optimum aspect ratio of 0.73 was identified. This moderate aspect ratio is suitable for large-scale replication, while showing near-zero surface reflection and excellent light trapping. An increase in energy yield of up to 8% was calculated for the case of micro-cone textures at the front surface of commercial alkaline-etched c-Si solar cells. Moreover, the excellent optical properties of the micro-cone textures were highlighted by improving the power conversion efficiency (PCE) of a Cu(In,Ga)Se 2 (CIGS) thin-film solar cells from 20.2% to 20.9%. A comparable PCE improvement has been achieved by conventional MgF 2 antireflection coatings, but the angular stability and in turn the energy yield of the micro-cone textures is much higher.

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“…However, the pyramid structure cannot be well prepared by these above methods. Previous studies have already shown many alternative approaches [8,13,14] and nano-imprint lithography (NIL) has proved to be more appropriate for processing the large-area surface texture [15][16][17][18][19][20]. Meanwhile, wet etching of absorbing materials (such as silicon) is widely used in the fabrication of the micro-pyramid structure by combining with the NIL technique [15,21].…”

Section: Introductionmentioning

confidence: 99%

Design and Preparation of a Micro-Pyramid Structured Thin Film for Broadband Infrared Antireflection

Liu

Zhou

et al. 2018

Coatings

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A micro-pyramid structured thin film with a broad-band infrared antireflection property is designed and fabricated by using the single-point diamond turning (SPDT) technique and combined with nano-imprint lithography (NIL). A structure with dimensions of 10 µm pitch and 5 µm height is transferred from the copper mold to the silicon nitride optical film by using NIL and proportional inductively-coupled plasma (ICP) etching. Reflectance of the micro-optical surface is reduced below 1.0% over the infrared spectral range (800-2500 nm). A finite-difference-time-domain (FDTD) analysis indicates that this micro-structure can localize photons and enhance the absorption inside the micro-pyramid at long wavelengths. As described above, the micro-pyramid array has been integrated in an optical film successfully. Distinguishing from the traditional micro-optical components, considering the effect of refraction and diffraction, it is a valuable and flexible method to take account of the interference effect of optical film.

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Manufacture of light-trapping (LT) films by ultraviolet (UV) irradiation and their applications for polymer solar cells (PSCs)

Cited by 10 publications

References 13 publications

Photolysis of Dimethyl Phthalate via Microwave Discharge Electrodeless Iodine Lamp: Parameters, Feasibility and Mechanism

Photolysis of Dimethyl Phthalate via Microwave Discharge Electrodeless Iodine Lamp: Parameters, Feasibility and Mechanism

Micro‐cone textures for improved light in‐coupling and retroreflection‐inspired light trapping at the front surface of solar modules

Design and Preparation of a Micro-Pyramid Structured Thin Film for Broadband Infrared Antireflection

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