Toward Perfect Light Trapping in Thin‐Film Photovoltaic Cells: Full Utilization of the Dual Characteristics of Light

Cho, Changsoon; Jeong, Seonju; Choi, Hak Jong; Shin, Nara; Kim, BongSoo; Jeon, Eun‐chae; Lee, Jung‐Yong

doi:10.1002/adom.201500471

Cited by 26 publications

(38 citation statements)

References 45 publications

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“…Thus, the solar cell covered with the µ-patterned film would absorb more light than the bare solar cell. The increase of the PCE value with the microstructure patterned protection film was also recently reported [23][24][25][26].…”

Section: Resultssupporting

confidence: 76%

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Hou

Shanmugasundaram

Nguyen

2019

Micro and Nano Syst Lett

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Herein, we present a facile fabrication method to prepare the optically transparent, flexible and self-cleanable poly(urethane acrylate) (PUA) superhydrophobic film. The low surface energy siloxane functionalization on the thermally activated µ-patterned PUA/graphene oxide composite (S-PG) was found to be a successful strategy to modify the PUA intrinsic hydrophilicity into superhydrophobic nature. The S-PG film (with GO content of 0.1 wt%) repeatedly showed the water contact angle (WCA) of 149.82 ± 1° with excellent self-cleaning property. Further, the fabricated film exhibited high optical transparency (80%) in the 400-800 nm wavelength region. Finally, the practical applicability of the fabricated S-PG film was demonstrated by using the film as a protective layer for solar panel module. The power conversion efficiency (PCE) of the solar module with and without S-PG superhydrophobic film was found to be 5.98% and 5.82%, respectively. The enhancement in the PCE performance of the solar module is attributed to the excellent optical transparent and less light reflecting nature of the proposed film. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Publisher's NoteSpringer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Section: Resultssupporting

confidence: 76%

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Hou

Shanmugasundaram

Nguyen

2019

Micro and Nano Syst Lett

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“…In the limit of perfect PR and zero parasitic absorption loss, a 100% filter transmission could be achieved for the desired property. Figure 4c-e illustrate more examples of light property optimisation-a 1D metal nanogrid 46,47 that aligns polarisation; an angle confinement microstructure 48,49 , which confines emission angle; and a distributed Bragg reflector 35,50,51 , which narrows both emission angle and spectrum. Polarised emission will be especially useful in display applications, reducing the 50% efficiency losses typically encountered in the circular polariser needed to achieve high contrast ratios.…”

Section: Resultsmentioning

confidence: 99%

The role of photon recycling in perovskite light-emitting diodes

et al. 2020

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Perovskite light-emitting diodes have recently broken the 20% barrier for external quantum efficiency. These values cannot be explained with classical models for optical outcoupling. Here, we analyse the role of photon recycling (PR) in assisting light extraction from perovskite light-emitting diodes. Spatially-resolved photoluminescence and electroluminescence measurements combined with optical modelling show that repetitive re-absorption and reemission of photons trapped in substrate and waveguide modes significantly enhance light extraction when the radiation efficiency is sufficiently high. In this manner, PR can contribute more than 70% to the overall emission, in agreement with recently-reported high efficiencies. While an outcoupling efficiency of 100% is theoretically possible with PR, parasitic absorption losses due to absorption from the electrodes are shown to limit practical efficiencies in current device architectures. To overcome the present limits, we propose a future configuration with a reduced injection electrode area to drive the efficiency toward 100%.

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“…Polymer:fullerene solar cells, which are recognized as one of the most viable next generation solar cell technologies, have shown encouraging advances in power conversion efficiency (PCE) with maximum values nowadays over 10 % . Achieving such high efficiencies is primarily attributed to the synthesis of new polymer materials as well as on numerous advancements in device fabrication technologies including composition optimization, nanomorphology control, and novel device architectures since early works on bulk heterojunction (BHJ) concepts .…”

Section: Introductionmentioning

confidence: 99%

>10% Efficiency Polymer:Fullerene Solar Cells with Polyacetylene‐Based Polyelectrolyte Interlayers

Nam

Seo

Han

et al. 2016

Adv Materials Inter

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Polymer solar cells have gained great attention due to their tremendous potential for applications in light-weight, large-area, and flexible photovoltaic modules fabricated via continuous roll-to-roll processes. Despite the significant progress, however, their efficiency and operating stability are still inadequate for commercial applications. Interfacial engineering of the electron-collecting buffer layer and the organic photoactive layer through the use of organic dipole interlayers, has been proposed as a simple and scalable way to improve the overall solar cell performance. Here, highly efficient inverted polymer:fullerene solar cells have been successfully developed with a power conversion efficiency of over 10%. The bulk heterojunction layer consists of the poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b]dithiophene-alt-3-fluorothieno[3,4-b]thiophene-2-carboxylate] (PTB7-Th) and the [6,6]-phenyl-C 71 -butyric acid methyl ester (PC 71 BM), as the electron donor and electron acceptor, respectively. Key to this success is the insertion of the ionic polyacetylene-based conjugated polymer, poly(N-dodecyl-2-ethynylpyridinium bromide), as an interfacial dipole layer. The latter is shown to lower the work function of the electron transporting zinc oxide layer and increase the built-in potential, consequently facilitating efficient charge transport/extraction. Optimized solar cells exhibit power conversion efficiency values exceeding 10% while their operating stability under continuous solar-simulated illumination is significantly enhanced when ultraviolet light is effectively blocked using a suitable optical filter.

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Toward Perfect Light Trapping in Thin‐Film Photovoltaic Cells: Full Utilization of the Dual Characteristics of Light

Cited by 26 publications

References 45 publications

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

The role of photon recycling in perovskite light-emitting diodes

>10% Efficiency Polymer:Fullerene Solar Cells with Polyacetylene‐Based Polyelectrolyte Interlayers

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