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425 results on '"Huang, Wenchao"'

3. Buried interface molecular hybrid for inverted perovskite solar cells

Author

Liu, Sanwan, Li, Jingbai, Xiao, Wenshan, Chen, Rui, Sun, Zhenxing, Zhang, Yong, Lei, Xia, Hu, Shuaifeng, Kober-Czerny, Manuel, Wang, Jianan, Ren, Fumeng, Zhou, Qisen, Raza, Hasan, Gao, You, Ji, Yitong, Li, Sibo, Li, Huan, Qiu, Longbin, Huang, Wenchao, Zhao, Yan, Xu, Baomin, Liu, Zonghao, Snaith, Henry J., Park, Nam-Gyu, and Chen, Wei

Published
2024
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23. Inflammation and Nutritional Status Mediated the Increased of Risk of Atrial Fibrillation Recurrence Associated with eGFRdiff Post-Ablation.

Author

Huang, Wenchao, Liu, Hanxiong, Luo, Yan, Xiong, Shiqiang, Suo, Shuwei, Zhang, Zhen, Shang, Luxiang, and Sun, Huaxin

Abstract

Background: Serum creatinine and cystatin C levels are influenced by different non-renal factors. The difference between the estimated glomerular filtration rates (eGFRdiff) based on these two markers helps assess cardiovascular risk factors unrelated to kidney function. However, its impact on post-ablation atrial fibrillation (AF) recurrence remains unknown. Methods: From July 2017 to February 2023, we prospectively observed 989 consecutive AF patients who underwent radiofrequency ablation. The association between eGFRdiff and post-ablation AF recurrence was analyzed using Kaplan-Meier methods, adjusted Cox regression analysis, and restricted cubic spline (RCS) analysis. Results: During a median follow-up period of 29 months, 326 cases of AF recurrence were detected. Participants were divided into three groups based on eGFRdiff: high (≥ − 9.22), medium (− 20.98 to − 9.22), and low (≤ − 20.98). Multivariable Cox proportional hazards models revealed that, compared to the medium eGFRdiff group, individuals in the low eGFRdiff group (hazard ratio [HR] 1.46, 95% confidence interval [CI] 1.08– 1.94, p < 0.01) and the high eGFRdiff group (HR 1.69, 95% CI 1.27– 2.27, p < 0.01) had a significantly increased risk of AF recurrence. RCS analysis demonstrated a U-shaped association between eGFRdiff and AF recurrence. Stratified analyses confirmed the robustness of the core findings across subgroups, except for females. Notably, the geriatric nutritional risk index and the derived neutrophil-to-lymphocyte ratio partially mediated the association between eGFRdiff and high AF recurrence by 5.7% and 10.7%, respectively. Conclusion: eGFRdiff is related to individual nutritional and inflammatory statuses and can be used to predict the risk of AF recurrence. (Clinical trial registration number: ChiCTR-OIN-17013021). Plain Language Summary: This study investigated the association between eGFRdiff and AF recurrence after ablation. eGFRdiff is calculated from two different markers in the blood (creatinine and cystatin C), which reflect both kidney health and other body conditions like nutrition and inflammation. We followed 989 patients who had AF and underwent ablation from July 2017 to February 2023. We found that eGFRdiff was much higher or lower, the risk of AF recurrence increased, forming a U-shaped curve. This pattern was consistent in most groups of patients, except for women who showed a different trend. Our findings suggest that both nutritional status and inflammation play roles in AF recurrence, but their impacts differ based on eGFRdiff levels. Poor nutrition was more significant at lower eGFRdiff levels, while inflammation was more crucial at higher levels. Interestingly, inflammation seemed to have a stronger impact on women. These insights emphasize the need to monitor and manage patients' nutritional and inflammatory status to reduce the risk of AF recurrence, especially considering sex-specific factors. Future larger studies are needed to confirm these results and further refine treatment strategies. [ABSTRACT FROM AUTHOR]

Published
2024
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24. In‐Doped ZnO Electron Transport Layer for High‐Efficiency Ultrathin Flexible Organic Solar Cells.

Author

Liu, Xiujun, Ji, Yitong, Xia, Zezhou, Zhang, Dongyang, Cheng, Yingying, Liu, Xiangda, Ren, Xiaojie, Liu, Xiaotong, Huang, Haoran, Zhu, Yanqing, Yang, Xueyuan, Liao, Xiaobin, Ren, Long, Tan, Wenliang, Jiang, Zhi, Lu, Jianfeng, McNeill, Christopher, and Huang, Wenchao

Subjects
SOLAR cells, ELECTRON mobility, ELECTRON transport, ZINC oxide, HIGH temperatures
Abstract

Sol–gel processed zinc oxide (ZnO) is one of the most widely used electron transport layers (ETLs) in inverted organic solar cells (OSCs). The high annealing temperature (≈200 °C) required for sintering to ensure a high electron mobility however results in severe damage to flexible substrates. Thus, flexible organic solar cells based on sol–gel processed ZnO exhibit significantly lower efficiency than rigid devices. In this paper, an indium‐doping approach is developed to improve the optoelectronic properties of ZnO layers and reduce the required annealing temperature. Inverted OSCs based on In‐doped ZnO (IZO) exhibit a higher efficiency than those based on ZnO for a range of different active layer systems. For the PM6:L8‐BO system, the efficiency increases from 17.0% for the pristine ZnO‐based device to 17.8% for the IZO‐based device. The IZO‐based device with an active layer of PM6:L8‐BO:BTP‐eC9 exhibits an even higher efficiency of up to 18.1%. In addition, a 1.2‐micrometer‐thick inverted ultrathin flexible organic solar cell is fabricated based on the IZO ETL that achieves an efficiency of 17.0% with a power‐per‐weight ratio of 40.4 W g−1, which is one of the highest efficiency for ultrathin (less than 10 micrometers) flexible organic solar cells. [ABSTRACT FROM AUTHOR]

Published
2024
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38. High-efficiency ultrathin flexible organic solar cells with a bilayer hole transport layer.

Author

Zhang, Dongyang, Ji, Yitong, Cheng, Yingying, Liu, Xiangda, Xia, Zezhou, Liu, Xiujun, Liu, Xiaotong, Yang, Xueyuan, and Huang, Wenchao

Abstract

The storage stability and mechanical durability are two key parameters for the application of flexible organic solar cells (OSCs), which are considered a promising power source for wearable electronics. However, most of the high-efficiency flexible OSCs are fabricated based on the poly(3,4-ethylenedioxythiophene):poly(styrene–sulfonate) (PEDOT:PSS) hole transport layer, which hinders the long-term operation, especially under cyclic bending or stretching. Herein, we develop an ultrathin flexible OSC (with a total thickness of less than 1.5 μm) based on the bilayer hole transport layer, incorporating a MoO3 interlayer between PEDOT:PSS and ITO, which can simultaneously improve the efficiency, storage stability and mechanical stability of ultrathin flexible OSCs. The ultrathin OSC based on the bilayer HTL achieves a power conversion efficiency (PCE) of 17.0% and a power-per-weight ratio of 39.3 W g−1, compared to single-layer HTL devices with a PCE of 16.4%. To the best of our knowledge, this is one of the highest efficiencies among all ITO-based ultrathin OSCs. Furthermore, the best-performing ultrathin OSCs show PCE retentions of 89.1% and 84.4% after 1000 cycles of bending (with a bending radius of 1 mm) and 1000 cycles of compression–stretching tests, respectively. [ABSTRACT FROM AUTHOR]

Published
2024
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