In the past period of time, perovskite solar cells have gained tremendous developments in improving photovoltaic performance, but they still face severe challenges. Defects in perovskite layers, especially at grain bo...In the past period of time, perovskite solar cells have gained tremendous developments in improving photovoltaic performance, but they still face severe challenges. Defects in perovskite layers, especially at grain boundaries, severely limit the stabilization and efficiency of solar cells. In this work, we adopt 3-carboxyphenylboronic acid(CPBA) for modifying defects in perovskite thin films. Through the interaction among the carboxyl group, boronic acid and lead ions in the perovskite film, the crystallization effect of the perovskite molecular is greatly optimized. Moreover, the film defects are spontaneously passivated and the band gap is reduced, increasing the open circuit voltage and fill factor. Therefore,power conversion efficiency has been increased from 17.25% to 20.20%. This discovery provides a potential strategy for passivating the trap states in perovskite and enhancing the properties of devices.展开更多
目的:通过Meta分析比较右美托咪定(dexmedetomidine,DEX)对手术患者围术期炎症和应激反应的影响。方法:我们分别检索了PubMed,METSTR,EMBASE和Web of Science四个数据库,共收录30篇评估术中持续泵注DEX对全麻手术患者围术期炎症和应激...目的:通过Meta分析比较右美托咪定(dexmedetomidine,DEX)对手术患者围术期炎症和应激反应的影响。方法:我们分别检索了PubMed,METSTR,EMBASE和Web of Science四个数据库,共收录30篇评估术中持续泵注DEX对全麻手术患者围术期炎症和应激反应影响的随机对照实验。结局指标包括肾上腺素、去甲肾上腺素、皮质醇、血糖、IL-6、TNF-α、CRP、IL-10、IL-1β和WBC水平。连续性变量采用标准均数差(standard mean difference,SMD)和95%置信区间(CI)作为合并统计量。结果:Meta分析结果显示,与对照组相比,DEX组肾上腺素、去甲肾上腺素、皮质醇、血糖、IL-6、TNF-α、IL-1β、WBC水平降低,且差异有统计学意义。CRP、IL-10水平在两组无统计学差异。结论:DEX作为一种麻醉辅助药,能显著降低全麻手术患者应激(肾上腺素、去甲肾上腺素、血浆皮质醇、血糖)和炎症(IL-6、TNF-α和IL-1β)反应水平,有助于改善患者的临床疗效。但CRP、IL-10水平在两组无统计学差异。展开更多
基金Project supported by the Regional Joint Fund of the National Science Foundation of China (Grant No. U21A20492)the Sichuan Science and Technology Program (Grant Nos. 2022YFH0081, 2022YFG0012, and 2022YFG0013)+1 种基金sponsored by the Sichuan Province Key Laboratory of Display Science and TechnologyQiantang Science & Technology Innovation Center。
文摘In the past period of time, perovskite solar cells have gained tremendous developments in improving photovoltaic performance, but they still face severe challenges. Defects in perovskite layers, especially at grain boundaries, severely limit the stabilization and efficiency of solar cells. In this work, we adopt 3-carboxyphenylboronic acid(CPBA) for modifying defects in perovskite thin films. Through the interaction among the carboxyl group, boronic acid and lead ions in the perovskite film, the crystallization effect of the perovskite molecular is greatly optimized. Moreover, the film defects are spontaneously passivated and the band gap is reduced, increasing the open circuit voltage and fill factor. Therefore,power conversion efficiency has been increased from 17.25% to 20.20%. This discovery provides a potential strategy for passivating the trap states in perovskite and enhancing the properties of devices.
文摘目的:通过Meta分析比较右美托咪定(dexmedetomidine,DEX)对手术患者围术期炎症和应激反应的影响。方法:我们分别检索了PubMed,METSTR,EMBASE和Web of Science四个数据库,共收录30篇评估术中持续泵注DEX对全麻手术患者围术期炎症和应激反应影响的随机对照实验。结局指标包括肾上腺素、去甲肾上腺素、皮质醇、血糖、IL-6、TNF-α、CRP、IL-10、IL-1β和WBC水平。连续性变量采用标准均数差(standard mean difference,SMD)和95%置信区间(CI)作为合并统计量。结果:Meta分析结果显示,与对照组相比,DEX组肾上腺素、去甲肾上腺素、皮质醇、血糖、IL-6、TNF-α、IL-1β、WBC水平降低,且差异有统计学意义。CRP、IL-10水平在两组无统计学差异。结论:DEX作为一种麻醉辅助药,能显著降低全麻手术患者应激(肾上腺素、去甲肾上腺素、血浆皮质醇、血糖)和炎症(IL-6、TNF-α和IL-1β)反应水平,有助于改善患者的临床疗效。但CRP、IL-10水平在两组无统计学差异。
