Diffraction‐Grated Perovskite Induced Highly Efficient Solar Cells through Nanophotonic Light Trapping

Wang, Yang; Wang, Peng; Zhou, Xue; Li, Chang; Li, Huizeng; Hu, Xiaotian; Li, Fengyu; Li, Xiaoping; Li, Mingzhu; Song, Yanlin

doi:10.1002/aenm.201702960

Cited by 133 publications

(117 citation statements)

References 39 publications

(23 reference statements)

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“…[19][20][21] We examined the optical properties of the ETLs, including their vertical transmittance (VT) and total transmittance (TT) by UV-Vis-NIR spectrophotometry ( Figure S1, Supporting Information). As the window layer of n-i-p type PSCs, surface texturization is the preferable configuration to ensure effective light-trapping over a wide wavelength range.…”

Section: Resultsmentioning

confidence: 99%

Activating Old Materials with New Architecture: Boosting Performance of Perovskite Solar Cells with H₂O‐Assisted Hierarchical Electron Transporting Layers

et al. 2018

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The breakthrough of organometal halide perovskite solar cells (PSCs) based on mesostructured composites is regarded as a viable member of next generation photovoltaics. In high efficiency PSCs, it is crucial to finely optimize the charge dynamics and optical properties matching between the perovskites and electron transporting materials to relax the trade‐off between the optical and electrical requirements. Here, a simple antipolar route with H 2 O as the additive is proposed to prepare hierarchical electron transporting layers to boost the efficiency of dopant‐free PSCs. The photovoltaic performance of the PSCs is enhanced owing to increased light‐scattering, improved Ostwald ripening, and photo‐generated electron extraction. Optimization of the H 2 O addition enables a valid power conversion efficiency of 19.9% (reverse scan: 20.02%) to be achieved. The device can retain more than 90% of its initial performance after storage in air more than 30 days. These results are inspiring in that they present that a mesoporous transporting layer could be easily re‐constructed to hierarchical architecture by the antipolar method to further improve the performance of PSCs.

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Section: Resultsmentioning

confidence: 99%

Activating Old Materials with New Architecture: Boosting Performance of Perovskite Solar Cells with H₂O‐Assisted Hierarchical Electron Transporting Layers

et al. 2018

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“…The constructed diffraction grating on the active layer realizes nanophotonic light trapping through diffraction and suppresses carrier recombination effectively. The observed power conversion efficiency for this device is 19.71% with a photocurrent density of 23.11 mA/cm 2 (Wang et al, 2018b).…”

Section: Whispering Gallery Architecture In Perovskite Solar Cellsmentioning

confidence: 82%

Quantum Dot Sensitized Whisperonic Solar Cells—Improving Efficiency Through Whispering Gallery Modes

et al. 2019

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Environmental deterioration and depletion in conventional energy resources greatly demand the need for photovoltaic devices, which use solar radiation to meet future energy demands. Efficient light management plays a pivotal role in improving the performance of photovoltaic devices. Various avenues have been explored to address light management in solar cells. Employing whispering gallery mode (WGM) microresonators in solar cell device is one such strategy. Using resonating structures for light scattering is recently gaining momentum as they exhibit great potential to enhance the efficiency through light trapping. Functional material-based microresonators further provide an added advantage as they combine inherent optical resonance with the material properties suitable for photovoltaics like efficient charge separation and transport in one platform. "Whisperonic solar cell" is a broadly classified device in which resonating cavities are used in the cell architecture to effectively scatter the light, resulting in enhanced light absorption and thus efficiency. Recent studies reveal that WGM-enabled optical microcavities can effectively get coupled to the light absorber in a sensitized solar cell (SSC) and improve the performance of SSC significantly. In this short review, we briefly present the idea of enhancing the efficiency of solar cell using WGMs. Several case studies available from the literature for realizing the concept of WGM for light trapping are highlighted. Particular focus is given to the quantum dot sensitized whisperonic solar cells. The concept is much more universal and will be useful in both thin-film and sensitized solar cells.

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“…Our further work on assemble metal nanomaterials or colloidal nanoparticles via feasible printed process, patterned the various linear or curves 1D/2D morphologies and optimal interconnects on diverse substrates [6]. The desirable conductive patterns contribute the remarkable application on sensitive electronical skin [6a], transparent touch screen [6b,c], multi-layer circuits [6d], ultra-integrated complex circuits[6e], soft actuators [6f] and high performance photonic crystal sensors [7] as well as wearable perovskite solar power sources [8]. These achievements on functional printing are derived and benefited from the fundamental researches on solid/liquid interfacial wettability manipulation, morphology control of dried ink droplets, as well as functional nanomaterial fabrication, which develop the research system of Green Printing Technology.…”

Section: Figure 1 Droplets Manipulation Based On Green Printing Techmentioning

confidence: 99%