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176 results on '"Huang, Zengqi"'

14. Wearable Perovskite‐Based Shadow Recognition Sensor for Ambient and Nonobtrusive Human–Computer Interaction

Author

Wu, Tingqing, primary, Huang, Zengqi, additional, Li, Lin, additional, Sun, Wei, additional, Xue, Tangyue, additional, Pan, Qi, additional, Xie, Hongfei, additional, Chen, Sisi, additional, Guo, Lutong, additional, Chi, Jimei, additional, Wang, Huadong, additional, Zhang, Zeying, additional, Han, Teng, additional, Su, Meng, additional, and Song, Yanlin, additional

Published
2022
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15. Lateral Heterostructured Vis–NIR Photodetectors with Multimodal Detection for Rapid and Precise Classification of Glioma

Author

Xie, Hongfei, primary, Pan, Qi, additional, Wu, Dongdong, additional, Qin, Feifei, additional, Chen, Shuoran, additional, Sun, Wei, additional, Yang, Xu, additional, Chen, Sisi, additional, Wu, Tingqing, additional, Chi, Jimei, additional, Huang, Zengqi, additional, Wang, Huadong, additional, Zhang, Zeying, additional, Chen, Bingda, additional, Carmeliet, Jan, additional, Su, Meng, additional, and Song, Yanlin, additional

Published
2022
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16. A shape memory scaffold for body temperature self‐repairing wearable perovskite solar cells with efficiency exceeding 21%

Author

Xue, Tangyue, primary, Huang, Zengqi, additional, Zhang, Pei, additional, Su, Meng, additional, Hu, Xiaotian, additional, Wu, Tingqing, additional, Fan, Baojin, additional, Chen, Gangshu, additional, Yu, Guanghui, additional, Liu, Wentao, additional, Liu, Xuying, additional, Zhang, Yiqiang, additional, and Song, Yanlin, additional

Published
2022
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19. 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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20. Wearable Perovskite‐Based Shadow Recognition Sensor for Ambient and Nonobtrusive Human–Computer Interaction.

Author

Wu, Tingqing, Huang, Zengqi, Li, Lin, Sun, Wei, Xue, Tangyue, Pan, Qi, Xie, Hongfei, Chen, Sisi, Guo, Lutong, Chi, Jimei, Wang, Huadong, Zhang, Zeying, Han, Teng, Su, Meng, and Song, Yanlin

Subjects
HUMAN-computer interaction, HUMAN activity recognition, OPTOELECTRONIC devices, HAPTIC devices, DISCONTINUOUS precipitation, LIQUID crystals, RECOGNITION (Psychology)
Abstract

Driven by the Internet of Everything, one of the main goals in human–computer interaction is to achieve intuitive, effortless, and easy‐to‐learn communication. Thus, senseless optoelectronic devices with high response performance under ambient environment have an extensive application space in improving the interfacing between users and computers. Herein, a concept of wearable perovskite‐based shadow recognition sensor is demonstrated for ambient and nonobtrusive human–computer interaction. The multidimensional ordered nucleation and growth of perovskite crystals are promoted by introducing the self‐driving effect of liquid crystal (LC) oligomers. The resulted LC‐doped perovskite film (LC‐PVK) with micrometer‐sized grains can output relatively high photocurrent under indoor ambient light (≈500 lux). The LC‐based device exhibits over a hundred times of on–off ratio and fast response of millisecond level even after storage for more than 1200 h. The device also shows an ultratrace Pb2+ leakage of 1.02 μg L−1 in water, and still retains more than 90% of the photocurrent intensity after thousands of bending strains. Accordingly, a novel human–computer interaction is achieved by identifying external action commands with the recognition of shadows, which can provide a "haptic" perception for robots. [ABSTRACT FROM AUTHOR]

Published
2023
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24. Water‐Dispersing Perovskite Probes for the Rapid Imaging of Glioma Cells

Author

Wu, Dongdong, primary, Chi, Jimei, additional, Zhang, Meng, additional, Cheng, Lijun, additional, Wang, Xuning, additional, Fan, Junzhen, additional, Huang, Zengqi, additional, Wang, Huadong, additional, Xie, Hongfei, additional, Pan, Qi, additional, Zhang, Zeying, additional, Chen, Bingda, additional, Su, Meng, additional, Xu, Bainan, additional, and Song, Yanlin, additional

Published
2021
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31. An in situ bifacial passivation strategy for flexible perovskite solar module with mechanical robustness by roll-to-roll fabrication

Author

Wang, Hongyu, primary, Huang, Zengqi, additional, Xiao, Shuqin, additional, Meng, Xiangchuan, additional, Xing, Zhi, additional, Rao, Li, additional, Gong, Chenxiang, additional, Wu, Runsheng, additional, Hu, Ting, additional, Tan, Licheng, additional, Hu, Xiaotian, additional, Zhang, Shaohua, additional, and Chen, Yiwang, additional

Published
2021
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34. Water‐Dispersing Perovskite Probes for the Rapid Imaging of Glioma Cells.

Author

Wu, Dongdong, Chi, Jimei, Zhang, Meng, Cheng, Lijun, Wang, Xuning, Fan, Junzhen, Huang, Zengqi, Wang, Huadong, Xie, Hongfei, Pan, Qi, Zhang, Zeying, Chen, Bingda, Su, Meng, Xu, Bainan, and Song, Yanlin

Subjects
CELL imaging, ELECTRIC charge, PEROVSKITE, FLUORESCENCE quenching, QUANTUM dots
Abstract

Real‐time in vitro detection of glioma cells facilitates precise tumor removal. However, the fluorescent labeling of tumor cells in clinical practice is limited by many factors, including the time consumed, low recognition efficiency, and fluorescence quenching. Here, a general strategy for building perovskite quantum dot (PQD)‐based biological probes utilizing the attraction between positive and negative electric charges is reported. Poly (lactic‐co‐glycolic acid) (PLGA) is chosen for encapsulating PQDs to completely prevent their aggregation, decomposition, or release in water or oxygen. The carboxyl group of PLGA has anchoring coordination with the PQDs, which reduces the surface defects. Moreover, it causes PQD‐based nanocrystals (P‐PNCs) to be surrounded by a positively charged layer in water. Given the specific recognition of chlorotoxin for the channels, rapid imaging of glioma cells is successfully performed in 15 min using P‐PNCs modified with chlorotoxin via charge attraction. The photoluminescence quantum yield of P‐PNC probes reached 87% and remained at 93% after 30 days of dispersion in water, while maintaining a much longer fluorescence lifetime of 15 µs. Therefore, this promising biological probe will be a general nanoplatform for identifying distinct cellular compartments using different biomarker imaging methods. [ABSTRACT FROM AUTHOR]

Published
2022
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35. A Regularity‐Based Fullerene Interfacial Layer for Efficient and Stable Perovskite Solar Cells via Blade‐Coating.

Author

Li, Jiaxuan, Meng, Xiangchuan, Huang, Zengqi, Dai, Runying, Sheng, Wangping, Gong, Chenxiang, Tan, Licheng, and Chen, Yiwang

Subjects
SOLAR cells, PEROVSKITE, ELECTRON transport, BINDING energy, METHYL formate
Abstract

The electron transport layer (ETL) plays a crucial part in extracting electron carriers while optimizing the interfacial contact of perovskite/electrode in planar heterojunction perovskite solar cells (PVSCs). Despite various ETLs being designed for efficient PVSCs, there exists hardly any research on the effect of molecular stacking order on device performance. Herein, poly(ethylene‐co‐vinyl acetate) (EVA) is employed as the [6,6]‐phenyl‐C61‐butyric acid methyl ester (PC61BM) solution additive. The strong binding energy between EVA with PC61BM promotes the molecular stacking order of ETLs, which alleviates the morphology inhomogeneity, possesses a matched energy level, blocks ion migration, and improves the water–oxygen barrier of perovskite devices. The blade‐coated MAPbI3‐based PVSCs achieve a power conversion efficiency (PCE) of 19.32% with positive reproducibility and negligible hysteresis, as well as maintain 90% and 80% of the initial PCE after storage under inert and ambient conditions (52% humidity) for 1500 h without encapsulation. This strategy also improves the champion PCE of CsFAMA‐based PVSCs to 20.33%. These findings demonstrate that the regulation of molecular stacking order is a valid approach to optimize interfacial charge‐carrier recombination in PVSCs, which meet the demand for high‐performance ETL in large‐area PVSCs and improve the upscaling of the fabrication technology toward practical applications. [ABSTRACT FROM AUTHOR]

Published
2022
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