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Start Over Author "Song, Yanlin" Journal advanced functional materials
42 results on '"Song, Yanlin"'

5. Structural Color Boosted Electrochromic Devices: Strategies and Applications.

Author

Li, Lin, Yu, Zhumin, Ye, Changqing, and Song, Yanlin

Subjects
STRUCTURAL colors, ELECTROCHROMIC devices, ELECTROCHROMIC substances, COMPOSITE structures, PHOTONIC crystals, THIN films
Abstract

Electrochromic devices (ECDs) have attracted substantial attention on account of their unique characteristics and prosperous applications. However, their monotonous color modification remains a momentous challenge that significantly restricts their application scope. Integrating structural colors that arise from the interaction between light and periodic micro/nanostructures with electrochromic materials (ECMs) turns out to be an effective approach to enhancing the comprehensive performance of ECDs more than the coloration effectiveness. This review provides an overview on the recent burgeoning development of structural color ECDs regarding strategies and applications. The performance parameters of ECDs and physical principles regarding the generation of structural colors are introduced. Then, strategies that introduce structural colors into ECDs are discussed according to the category of chromogenic micro/nanostructures, namely, gratings, (single‐layer and multilayer) thin films, photonic crystals, plasmonic metasurfaces, and composite structures. The current state‐of‐the‐art research activities of structural color ECDs for display application including segmented and pixelated devices are also presented. Additionally, the future perspective of structural color ECDs with respect of major challenges and potential solutions is proposed. [ABSTRACT FROM AUTHOR]

Published
2024
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7. The Spacer Cation with Disulfide Bond for Efficient and Stable Low‐Dimensional Dion–Jacobson Perovskite Solar Cells.

Author

Miao, Zhipeng, Cao, Qingli, Peng, Sihui, Zhu, He, Yuan, Fangfang, Liang, Yuncai, Zhang, Ting, Zhao, Rudai, Li, Pengwei, Zhang, Yiqiang, and Song, Yanlin

Subjects
SOLAR cells, CHARGE carrier lifetime, PEROVSKITE, BINDING energy, CHARGE transfer
Abstract

Low‐dimensional (LD) perovskite has provided an exciting avenue for exploring stable perovskite solar cells (PSCs). However, PSCs based on LD perovskites still suffer from poor efficiency owing to unfavorable charge carrier dynamics. Here, cystamine (CYS) is employed as a ligand to construct LD Dion‐Jacobson (LDDJ) perovskite (CYS)MAn‐1PbnI3n+1 (n = 1, 2, 3..., MA: methylamine) for improving carrier properties. The disulfide bond not only changes the polarization characteristic but also increases the coupling between inorganic slabs due to the low barrier of rotation around the S‐S axis, thus reducing the exciton binding energy of CYS‐based LDDJ perovskite. Disulfide bonds provide a scene for charge localization in the interlayer region, which is conducive to reducing the anisotropy of charge transfer. Thanks to these merits, the (CYS)MA4Pb5I16 film delivers improved carrier diffusion length (electron for 1345 nm and hole for 950 nm) and mobility (9.23 cm2 V−1 S−1). As a result, the (CYS)(MA)4Pb5I16 PSC achieves a champion power conversion efficiency (PCE) of 16.52%, which is much higher than that of HDA and BA cations‐based PSCs (HDA: 1,6‐Hexanediamine, BA: Butylamine). Furthermore, the state‐of‐the‐art device only lost 8% of its initial PCE after 1600 h in the atmosphere. [ABSTRACT FROM AUTHOR]

Published
2024
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10. A General Vapor‐Induced Coating Approach for Layer‐controlled Organic Single Crystals

Author

Chen, Shengnan, primary, Liu, Zhaoxin, additional, Long, Haoran, additional, Yang, Jiaxin, additional, Li, Zheng, additional, Cai, Zheren, additional, Qu, Zhiyuan, additional, Shao, Lujing, additional, Shi, Xiaosong, additional, Jiang, Lang, additional, Xu, Wei, additional, Dong, Huanli, additional, Wei, Zhongming, additional, Qiao, Yali, additional, and Song, Yanlin, additional

Published
2023
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13. Crystal Growth Regulation of α‐FAPbI3 Perovskite Films for High‐Efficiency Solar Cells with Long‐Term Stability.

Author

Wang, Shiheng, Luo, Huaiqing, Gu, Zhenkun, Zhao, Rudai, Guo, Lutong, Wang, Na, Lou, Yunjie, Xu, Qun, Peng, Shou, Zhang, Yiqiang, and Song, Yanlin

Subjects
SOLAR cells, CRYSTAL growth, REGULATION of growth, PEROVSKITE, GRAIN size, EXCIMER lasers
Abstract

The two‐step sequentially deposition strategy has been widely used to produce high‐performance FAPbI3‐based solar cells. However, due to the rapid reaction between PbI2 and FAI, a dense perovskite film forms on top of the PbI2 layer immediately and blocks the FAI diffusion into the bottom of the PbI2 film for a complete reaction, which results in a low‐efficiency and limited reproducibility of perovskite solar cells (PSCs). Here, high‐quality α‐FAPbI3 perovskite films by crystal growth regulation with 4‐fluorobenzamide additives is fabricated. The additives can interact with FAI to suppress the fast reaction between the FAI and PbI2 and effectively passivate the under‐coordinated Pb2+ or I‐ defects. As a result, α‐FAPbI3 perovskite films with low trap density and large grain size are prepared. The modified PSCs present a high‐power conversion efficiency of 24.08%, maintaining 90% of their initial efficiency after 1400 h in high humidity. This study provides an efficient strategy of synergistic crystallization and passivation to form high‐quality α‐FAPbI3 films for high‐performance PSCs. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Embossed Template Induced Particles Assembly for Heterostructures and the Application in High‐Security Encryption.

Author

Guo, Dan, Ruan, Jun, Xu, Yanan, Li, Kaixuan, Han, Yu, Guo, Jinxin, Zhang, Xinping, Li, Yixuan, Ge, Kun, Zhai, Tianrui, and Song, Yanlin

Subjects
HETEROSTRUCTURES, SURFACE roughness, ENERGY transfer, NANOSTRUCTURED materials
Abstract

The coassembly of primary particles into heterostructures represents a significant strategy for advanced fabrication of multi‐functional materials or devices, and templated assembly has shown remarkable advantage for deterministic placement of particles and the efficient integration with substrates. However, template induced particles coassembly, which is significant for integrating multicomponents at desired positions, is still challenging. Herein, a facile strategy of embossed templateinduced particles coassembly for diverse superstructures and precise patterns is reported. Tunable region selective assembly of particles is demonstrated by controlling the resistance force via designing the embossed edge and surface roughness of the template. Through regulating the template morphologies and particles composition, well‐controlled coassembly of "flower" shaped heterostructure and chiral superstructure arrays are realized. Furthermore, the printable nanomaterials self‐assembly template is employed to achieve totally bottom‐up fabrication of excitation responsive heterostructure arrays, in which the multi‐photons process based energy transfer is studied to show the application in high‐secure encryption. With the advantage of accurate position and compatible to different materials, this strategy is expected to provide a promising platform for fabricating micro/nanoscale advanced devices. [ABSTRACT FROM AUTHOR]

Published
2023
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18. A Self‐Assembled Vertical‐Gradient and Well‐Dispersed MXene Structure for Flexible Large‐Area Perovskite Modules.

Author

Zhang, Ruijia, Huang, Zengqi, Chen, Weipeng, Lyu, Benzheng, Zhang, Hong, He, Xinjun, Hu, Xiaotian, Song, Yanlin, and Choy, Wallace C. H.

Subjects
FLEXIBLE structures, OPTOELECTRONIC devices, SOLAR cells, PEROVSKITE, GRAIN size, PRODUCTION sharing contracts (Oil & gas)
Abstract

Advancing hole transport layers (HTL) to realize large‐area, flexible, and high‐performance perovskite solar cells (PSCs) is one of the most challenging issues for its commercialization. Here, a self‐assembled gradient Ti3C2Tx MXene incorporated PEDOT:PSS HTL is demonstrated to achieve high‐performance large‐area PSCs by establishing half‐caramelization‐based glucose‐induced MXene redistribution. Through this process, the Ti3C2Tx MXene nanosheets are spontaneously dispersed and redistributed at the top region of HTL to form the unique gradient distribution structure composed of MXene:Glucose:PEDOT:PSS (MG‐PEDOT). These results show that the MG‐PEDOT HTL not only offers favorable energy level alignment and efficient charge extraction, but also improves the film quality of perovskite layer featuring enlarged grain size, lower trap density, and longer carrier lifetime. Consequently, the power conversion efficiency (PCE) of the flexible device based on MG‐PEDOT HTL is increased by 36% compared to that of pristine PEDOT:PSS HTL. Meanwhile, the flexible perovskite solar minimodule (15 cm2 area) using MG‐PEDOT HTL achieve a PCE of 17.06%. The encapsulated modules show remarkable long‐term storage stability at 85 °C in ambient air (≈90% efficiency retention after 1200 h) and enhanced operational lifetime (≈90% efficiency retention after 200 h). This new approach shows a promising future of the self‐assembled HTLs for developing optoelectronic devices. [ABSTRACT FROM AUTHOR]

Published
2023
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