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Buried interface bridging for inverted cesium-formamidinium triiodide perovskite solar cells with long operational stability

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Science China Chemistry 2025年第1期 163-173页

作者： Chenhui Zhang Chunjun Liang Fulin Sun Ting Zhu Xinghai Huang Yuzhu guo Xinyu guo Kunyang Ge Dan Li Fangtian You Zhiqun He Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic TechnologyBeijing Jiaotong University Department of Physics School of Physical Science and Engineering Beijing Jiaotong University

In the field of perovskite solar cells(PSCs), the research on defects in the buried interface has been relatively limited due to its non-exposure; however, this interface significantly impacts the performance enhancement of inverted PSCs. This study employs phenylethylammonium chloride(PEACl) molecules as a buffer layer to modify the buried interface of p-i-n structured PSCs,aiming to enhance the uniformity of self-assembled monolayers(SAMs) and facilitate the uniform nucleation and growth of perovskite films on the substrate. Furthermore, the introduction of the PEACl buffer layer effectively passivates defects at the bottom of the perovskite layer and notably enhances the crystal quality of the perovskite film by mitigating residual stress,thereby reducing nonradiative recombination loss. Following these optimizations, the MA-free PSCs treated with PEACl achieve a power conversion efficiency(PCE) of 24.11%, with significant improvements in storage, thermal stability, and operational stability. Particularly noteworthy is the device's performance in an unencapsulated state, whereas after 1,500 hours of continuous light operation stability testing, it retains 97% of its original efficiency. This study not only enriches the systematic understanding of the characteristics of the buried interface in PSCs but also contributes significantly to advancing the commercial production of perovskite photovoltaic technology.

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ImSpiRE: image feature-aided spatial resolution enhancement method

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Science China Life Sciences 2025年第1期 272-283页

作者： Yuwei Hua Yizhi Zhang Zhenming guo Shan Bian Yong Zhang State Key Laboratory of Cardiovascular Diseases and Medical Innovation Center Institute for Regenerative MedicineDepartment of NeurosurgeryShanghai East HospitalShanghai Key Laboratory of Signaling and Disease ResearchFrontier Science Center for Stem Cell ResearchSchool of Life Sciences and TechnologyTongji University

The resolution of most spatially resolved transcriptomic technologies usually cannot attain the single-cell level, limiting their applications in biological discoveries. Here, we introduce ImSpiRE, an image feature-aided spatial resolution enhancement method for in situ capturing spatial transcriptome. Taking the information stored in histological images, ImSpiRE solves an optimal transport problem to redistribute the expression profiles of spots to construct new transcriptional profiles with enhanced resolution, together with extending the gene expression profiles into unmeasured regions. Applications to multiple datasets confirm that ImSpiRE can enhance spatial resolution to the subspot level while contributing to the discovery of tissue domains, signaling communication patterns, and spatiotemporal characterization.

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Light People:Professor Cheng Zhang

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Light(Science & Applications) 2023年第11期12卷 2281-2290页

作者： Siqiu guo Light Publishing Group Changchun Institute of OpticsFineMechanics and PhysicsChinese Academy of Sciences3888 Dong Nan HuRoadChangchun 130033China

Editorial Nanophotonics has emerged as a cutting-edge interdisciplinary research field *** primary objective is to leverage the interaction between light and matter at the wavelength and sub-wavelength scales,with the purpose of designing and manufacturing miniaturized,multifunctional,and high-performance optical devices and *** Cheng Zhang from Huazhong University of Science and Technology has dedicated his career to nanophotonic device *** work encompasses a wide range of areas,including plasmonic devices,optical metamaterials,and *** the design of innovative artificial electromagnetic structures and the exploration of emerging nanofabrication techniques,Professor Cheng Zhang has effectively achieved versatile control over various properties of electromagnetic waves,including amplitude,phase,and polarization ***,his research extends to the continuous exploration of novel optical phenomena,aimed at realizing high-performance engineering *** this edition of Light People,we will take you deep into the world of Professor Cheng Zhang,a young scientist exemplifying the spirit of innovation,relentless improvement,and unwavering pursuit of *** will discover how he has overcome numerous challenges in the realm of nanophotonic research.

关键词： overcome versatile pursuit

Light People:Professor Fan Wang

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Light(Science & Applications) 2023年第10期12卷 2007-2014页

作者： Siqiu guo Light Publishing Group Changchun Institute of OpticsFineMechanics and PhysicsChinese Academy of SciencesChangchunChina

My first encounter with *** Wang left a profound impression on me.I felt that he was exactly the gentle and courteous scholar depicted in books,well-read in poetry and literature,and exceptionally *** my interactions with *** Wang,I deeply sensed his passion for academia and pursuit of knowledge,as well as his warm hospitality,kindness,and gentle demeanor.

关键词： gentle exceptional pursuit

融合注意力机制的YOLOv8-TS交通标志检测网络

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现代电子技术 2025年第1期48卷 179-186页

作者：黄智渊方遒郭星浩厦门理工学院机械与汽车工程学院福建厦门361024 厦门大学航空航天学院福建厦门361005

道路交通标志识别是自动驾驶、车联网的重要组成部分,为进一步提高交通标志检测的精度和速度,提出一种基于YOLOv8s改进的YOLOv8-TS道路交通标志检测网络。首先,对YOLOv8s进行了整体的轻量化设计,并设计了Conv-G7S和CSP-G7S模块,减少了... 详细信息

道路交通标志识别是自动驾驶、车联网的重要组成部分,为进一步提高交通标志检测的精度和速度,提出一种基于YOLOv8s改进的YOLOv8-TS道路交通标志检测网络。首先,对YOLOv8s进行了整体的轻量化设计,并设计了Conv-G7S和CSP-G7S模块,减少了网络的参数量;其次,设计了CSP-SwinTransformer模块,强化了模型利用窗口内的特征信息进行上下文感知和建模的能力;然后,在颈部网络融合了卷积注意力机制(CBAM),强化了模型对不同通道、空间权重信息的学习;最后,对损失函数进行了改进,提升了边界框回归性能。实验结果表明,在中国道路交通标志TT100K数据集上,精确率(Precision)、平均精度(mAP@0.5)分别提高了6.9%、3.7%,而改进后模型的参数量下降了75.4%,模型的大小仅为5.8 MB,平均精度(mAP@0.5)达到96.5%,检测速度由126.58 f/s提升至136.99 f/s。

关键词：交通标志检测 YOLOv8-TS 轻量化注意力机制 Conv-G7S WIoU

8周运动预适应增强脂肪干细胞治疗心肌梗死大鼠的效果

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中国组织工程研究 2025年第7期29卷 1363-1370页

作者：娄国张敏付常喜江苏经贸职业技术学院江苏省南京市211168 南京旅游职业学院江苏省南京市211100 徐州工程学院体育学院江苏省徐州市221008

背景:干细胞移植是心肌梗死的崭新疗法,然而梗死区域极其恶劣的微环境造成干细胞存活率低下并导致远期疗效甚微。运动预适应是一种通过运动诱导机体产生内源性保护效应的方式,可作为心脏康复预防与治疗的新策略。目的:评估运动预适应是... 详细信息

背景:干细胞移植是心肌梗死的崭新疗法,然而梗死区域极其恶劣的微环境造成干细胞存活率低下并导致远期疗效甚微。运动预适应是一种通过运动诱导机体产生内源性保护效应的方式,可作为心脏康复预防与治疗的新策略。目的:评估运动预适应是否能够增强大鼠心肌梗死后脂肪干细胞移植的心脏保护效应,探讨血管生成在其中的作用机制。方法:6周龄雄性SD大鼠随机分为对照组、造模组、干细胞组以及干细胞运动组。利用冠状动脉闭塞术制作急性心肌梗死模型,对照组同期行假手术;干细胞运动组于造模前进行8周有氧运动,造模后30 min进行脂肪干细胞移植;干细胞组仅进行脂肪干细胞移植。干细胞移植后1 d和7 d,利用免疫印迹法测定心肌总Akt(t-Akt)、磷酸化Akt(p-Akt)、血管内皮生长因子(VEGF)、总内皮型一氧化氮合酶(t-eNOS)和磷酸化内皮型一氧化氮合酶(p-eNOS)蛋白表达量,计算p-Akt/t-Akt和p-eNOS/t-eNOS比值;4周后利用彩色多普勒超声诊断系统检测心脏结构与功能以及心肌血流量,TTC染色法检测心肌梗死面积,Masson染色法检测心肌间质胶原沉积,免疫荧光染色法测定心肌毛细血管密度,TUNEL染色法评估心肌细胞凋亡。结果与结论:(1)干细胞移植后4周:与对照组比较,造模组左心室缩短分数、左心室射血分数、心肌毛细血管密度和心肌血流量下降(P0.05);与造模组比较,干细胞组上述指标均无显著性变化(P>0.05),干细胞运动组磷酸化p-Akt蛋白表达量以及p-Akt/t-Akt比值上调(P0.05),干细胞运动组p-Akt、VEGF、p-eNOS蛋白表达量以及p-Akt/t-Akt、p-eNOS/t-eNOS比值升高(P<0.05)。结果表明:运动预适应可增强脂肪干细胞对心肌梗死大鼠心脏重塑的治疗效果,其机制与促进心肌血管生成并增加血流灌注有关。

关键词：干细胞脂肪干细胞运动预适应心肌梗死血管生成心脏重塑血流灌注

Spraying Arginine at 5 Days before Harvest Delays Postharvest Broccoli Senescence via Nutrient Accumulation

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食品科学 2025年第1期46卷 131-141页

作者： SUN Yupeng CHEN Ying SHANG Qingwen guo Yanyin ZHANG Yuxiao WANG Yunqiao XUE Qingyue College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255049China Zichuan District Agricultural and Rural Affairs Service Center Zibo 255049China

To determine the effects of preharvest arginine spraying on the nutritional level of broccoli and the mechanism of action of arginine in improving the storage quality of broccoli,arginine spraying(5 mmol/L)was conducted at 0,1,3,and 5 days before *** appearance,respiration rate,mass-loss rate,electrolyte leakage,glucosinolate,ascorbic acid,total phenol,total flavonoid,total sugar and sucrose contents,and sucrose phosphate synthase(SPS),invertase(INV),sucrose synthase synthesis(SSS)and cleavage(SSC)activities of broccoli samples were observed after 0,2,4,6,8,and 10 days of *** results showed that spraying arginine at 5 days preharvest(5-ARG)helped to inhibit broccoli respiration during storage,delay electrolyte leakage,and maintain broccoli ***,during the growth stage,total sugar accumulation was higher in the 5-ARG *** addition,during the storage period,sucrose synthesis was accelerated,while sucrose cleavage was inhibited,resulting in more sucrose retention in postharvest *** conclusion,5-ARG resulted in the accumulation of more nutrients during the growth process and effectively delayed the quality decline during storage,thereby prolonging the shelf life of ***,this study provides a theoretical basis for improving postharvest storage characteristics of broccoli through preharvest treatments.

关键词： arginine broccoli preharvest spraying nutrient accumulation storage quality postharvest senescence

Pathological Networks Involving Dysmorphic Neurons in Type ⅡFocal Cortical Dysplasia

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Neuroscience Bulletin 2022年第9期38卷 1007-1024页

作者： Yijie Shao Qianqian Ge Jiachao Yang Mi Wang Yu Zhou Jin-Xin guo Mengyue Zhu jiachen Shi Yiqi Hu Li Shen Zhong Chen Xiao-Ming Li Jun-Ming Zhu Jianmin Zhang Shumin Duan Jiadong Chen Center for Neuroscience and Department of Neurosurgery of the Second Affiliated Hospital NHC and CAMS Key Laboratory of Medical NeurobiologyMOE Frontier Science Center for Brain Research and Brain-Machine IntegrationSchool of Brain Science and Brain MedicineZhejiang University School of MedicineHangzhou310058China Department of Neurosurgery of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhou310009China The MOE Key Laboratory of Biosystems Homeostasis&Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology Life Sciences InstituteZhejiang UniversityHangzhou310058China Department of Orthopedic Surgery School of Medicinethe Second Affiliated HospitalZhejiang UniversityHangzhou310009China Hangzhou Innovation Center Zhejiang UniversityHangzhou310058China Institute of Pharmacology&Toxicology NHC and CAMS Key Laboratory of Medical NeurobiologyCollege of Pharmaceutical SciencesSchool of Basic Medical SciencesZhejiang UniversityHangzhou310058China Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province College of Pharmaceutical SciencesZhejiang Chinese Medical UniversityHangzhou310058China Center for Neuroscience and Department of Neurology of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhou310058China NHC and CAMS Key Laboratory of Medical Neurobiology Center for Brain Science and Brain-Inspired IntelligenceJoint Institute for Genetics and Genome Medicine betweenGuangdong Hong Kong Macao Greater Bay AreaZhejiang University and the University of TorontoZhejiang University School of MedicineHangzhou310058China

Focal cortical dysplasia(FCD)is one of the most common causes of drug-resistant *** neurons are the major histopathological feature of typeⅡFCD,but their role in seizure genesis in FCD is *** we performed whole-cell patch-clamp recording and morphological reconstruction of cortical principal neurons in postsurgical brain tissue from drug-resistant epilepsy *** analyses revealed distinct morphological and electrophysiological characteristics of the upper layer dysmorphic neurons in typeⅡFCD,including an enlarged soma,aberrant dendritic arbors,increased current injection for rheobase action potential firing,and reduced action potential firing ***,the upper layer dysmorphic neurons received decreased glutamatergic and increased GABAergic synaptic inputs that were coupled with upregulation of the Na^(+)-K^(+)-Cl^(−)*** addition,we found a depolarizing shift of the GABA reversal potential in the CamKⅡ-cre::PTENflox/flox mouse model of drug-resistant epilepsy,suggesting that enhanced GABAergic inputs might depolarize dysmorphic ***,imbalance of synaptic excitation and inhibition of dysmorphic neurons may contribute to seizure genesis in typeⅡFCD.

关键词： Focal cortical dysplasia Dysmorphic neuron Whole-cell patch-clamp recording Morphological reconstruction Excitation-inhibition balance

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二维Janus LuClI的铁谷特性研究

原子与分子物理学报 2025年第2期42卷 159-168页

作者：朱靖欣郭三栋西安邮电大学电子工程学院西安710121

铁谷材料由于其固有的铁磁性质,可以产生自发谷极化,从而实现谷自由度的操纵.不同的谷极化状态为铁谷材料在信息传递领域的应用提供了可能性.在本文的工作中,采用了可靠的第一性原理计算方法,证明了Janus单层LuClI的动力学、力学和热力... 详细信息

铁谷材料由于其固有的铁磁性质,可以产生自发谷极化,从而实现谷自由度的操纵.不同的谷极化状态为铁谷材料在信息传递领域的应用提供了可能性.在本文的工作中,采用了可靠的第一性原理计算方法,证明了Janus单层LuClI的动力学、力学和热力学稳定性.发现Janus单层LuClI是一种有潜力的铁谷材料,它有着50.927 meV的谷劈裂.当Lu原子磁矩方向(平面外)发生颠倒时,可以实现谷极化翻转.还计算了Janus单层LuClI在布里渊区中的Berry曲率分布,主要集中在-K和K谷,可以实现反常谷霍尔效应.当电子关联强度比较小时,Janus单层LuClI的易磁化轴将指向面内,从而失去自发谷极化.尽管如此,利用应变调控可以使磁化方向从面内转向面外,从而产生谷极化.此外,Janus单层LuClI同时具有面内和面外压电响应,计算得到的面内压电应变系数d11大于大部分已有二维材料的计算值,而面外压电系数d31非常小.这为通过压电效应调控谷载流子提供了可能性.

关键词：铁谷材料压电第一性原理计算