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Polaron mobility modulation by bandgap engineering in black phaseα-FAPbI_(3)

Journal of Energy Chemistry 2023年第1期76卷 175-180,I0005页

作者： Chunwei Wang Zeyu Zhang Zhuang Xiong Xingyu Yue Bo Zhang tingyuan jia Zhengzheng Liu Juan Du Yuxin Leng Kuan Sun Ruxin Li State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024ZhejiangChina MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems CQU-NUS Renewable Energy Materials&Devices Joint LaboratorySchool of Energy&Power EngineeringChongqing UniversityChongqing 400044China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Lead halide hybrid perovskites(LHP)have emerged as one of the most promising photovoltaic materials for their remarkable solar energy conversion *** transportation of the photoinduced carriers in LHP could screen the defect recombination with the help of the large polaron ***,the physical insight of the relationship between the superior optical-electronic performance of perovskite and its polaron dynamics related to the electron-lattice strong coupling induced by the substitution engineering is still lack of ***,the bandgap modulated thin films ofα-FAPbI_(3)with different element substitution is investigated by the time resolved Terahertz *** find the polaron recombination dynamics could be prolonged in LHP with a relatively smaller bandgap,even though the formation of polaron will not be affected ***,the large polaron mobility in(FAPb I_(3))0.95(MAPbI_(3))0.05thin film is~30%larger than that in(FAPb I_(3))0.85(MAPbBr_(3))*** larger mobility in(FAPb I_(3))0.95(MAPb I_(3))0.05could be assigned to the slowing down of the carrier scattering ***,the physical origin of the higher carrier mobility in the(FAPb I_(3))0.95(MAPbI_(3))0.05should be related with the lattice distortion and enhanced electron–phonon coupling induced by the *** addition,(FAPbI_(3))0.95(MAPbI_(3))0.05will lose fewer active carriers during the polaron cooling process than that in(FAPb I_(3))0.85(MAPbBr_(3)),indicating lower thermal dissipation in(FAPbI_(3))0.95(MAPbI_(3))*** results suggest that besides the smaller bandgap,the higher polaron mobility improved by the substitution engineering inα-FAPbI_(3)can also be an important factor for the high PCE of the black phaseα-FAPbI_(3)based solar cell devices.

关键词： Perovskites Polaron Mobility Terahertz spectroscopy

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Role of the interlayer interactions in ultrafast terahertz thermal dynamics of bilayer graphene

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Chinese Optics Letters 2022年第9期20卷 79-83页

作者： tingyuan jia Shaoming Xie Zeyu Zhang Qinxue Yin Chunwei Wang Chenjing Quan Xiao Xing Juan Du Yuxin Leng State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China School of Physics and Electronics Shandong Normal UniversityJinan 250014China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

Bilayer graphene,which is highly promising for electronic and optoelectronic applications because of its strong coupling of the Dirac–Fermions,has been studied extensively for the emergent correlated phenomena with magic-angle *** to the low energy linear type band gap dispersion relationship,graphene has drawn an amount of optoelectronic devices applications in the terahertz ***,the strong interlayer interactions modulated electron-electron and electron-phonon coupling,and their dynamics in bilayer graphene have been rarely studied by terahertz *** this study,the interlayer interaction influence on the electron-electron and the electron-phonon coupling has been assigned with the interaction between the two graphene *** the ultrafast cooling process in bilayer graphene,the interlayer interaction could boost the electron-phonon coupling process and oppositely reduce the electron-electron coupling process,which led to the less efficient thermalization ***,the electron-electron coupling process is shown to be related with the electron momentum scattering time,which increased vividly in bilayer *** work could provide new insights into the ultrafast dynamics in bilayer graphene,which is of crucial importance for designing multi-layer graphene-based optoelectronic devices.

关键词： terahertz ultrafast spectroscopy bilayer graphene

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Disruption of KDM4C-ALDH1 A3 feed-forward loop inhibits sternness,tumorigenesis and chemoresistance of gastric cancer stem cells

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Signal Transduction and Targeted Therapy 2021年第10期6卷 2975-2977页

作者： tingyuan Lang jia Xu Lei Zhou Zhiqi Zhang Xinli Ma jiayi Gu Jingshu Liu Yunzhe Li Dongyan Ding jiangfeng Qiu Ddepartment of Gynecologic Oncology Chongqing University Cancer HospitalSchool of MedicineChongqing UniversityChongqingPeople's Republic of China Department of Gastrointestinal Surgery Renji Hospital Shanghai Jiao Tong University School of MedicineShanghaiPeople's Republic of China Singapore Eye Research Institute The AcademiaSingaporeSingapore Department of Ophthalmology Yong Loo Lin School of MedicineNational University of SingaporeSingaporeSingapore Ophthalmology and Visual Sciences Academia Clinical Program Duke-NUS Medical SchoolSingaporeSingapore Department of General Surgery Shanghai Fourth People's Hospital Affiliated to Tongji University School of MedicineShanghaiPeople's Republic of China

Dear Editor,Gastric cancer(GC)is a considerable global health burden;the median survival of advaneed GC is less than 1 year.^(1)Cancer stem cells(CSCs),a small population of cancer cells with stem cell-like properties,are the major cause of treatme nt failure,in eluding GC,2 however,the mechanisms underlying stemness maintenanee of GC stem cells(GCSCs)are still poorly understood.

关键词： cancer Gastric Cancer

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炒青石榴叶茶加工工艺的关键技术研究

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贵州农业科学 2014年第5期42卷 202-205页

作者：安玉红任廷远刘嘉黄燕徐毅毕节职业技术学院贵州毕节55170 西南大学食品学院重庆400716

为综合利用石榴资源,采用正交试验设计对炒青石榴叶茶加工过程中的关键技术杀青时间、杀青温度、揉捻时间和烘二青温度进行研究。结果表明:炒青石榴叶茶产品最佳工艺为投叶量180kg/h,290℃杀青6min,揉捻20min,85℃烘二青15min,60℃炒三... 详细信息

为综合利用石榴资源,采用正交试验设计对炒青石榴叶茶加工过程中的关键技术杀青时间、杀青温度、揉捻时间和烘二青温度进行研究。结果表明:炒青石榴叶茶产品最佳工艺为投叶量180kg/h,290℃杀青6min,揉捻20min,85℃烘二青15min,60℃炒三青30min,50℃炒干2.5h,该工艺下产品整齐、汤色和滋味好、产品质量高。

关键词：石榴叶茶加工工艺烘二青温度

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HPLC法测定西伯利亚接骨木中白桦脂酸含量

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西北药学杂志 2017年第1期32卷 31-34页

作者：王婷媛邱远金李莉朱国强贾晓光新疆中药民族药研究所乌鲁木齐830011 新疆医科大学药学院乌鲁木齐830011

目的建立西伯利亚接骨木中白桦脂酸的含量测定方法,为完善西伯利亚接骨木的质量标准提供理论依据。方法采用HPLC法。色谱柱:Agilent?C18(250mm×4.6mm,5μm);流动相:乙腈-1mL·L^(-1)磷酸水溶液(90∶10);柱温:25℃;流速:1.0mL·min^(-1)... 详细信息

目的建立西伯利亚接骨木中白桦脂酸的含量测定方法,为完善西伯利亚接骨木的质量标准提供理论依据。方法采用HPLC法。色谱柱:Agilent?C18(250mm×4.6mm,5μm);流动相:乙腈-1mL·L^(-1)磷酸水溶液(90∶10);柱温:25℃;流速:1.0mL·min^(-1);检测波长:210nm。结果白桦脂酸质量浓度在0.02~0.32mg·mL^(-1)范围内线性关系良好(r=0.999 9),平均回收率为99.6%,RSD值为1.34%(n=9),白桦脂酸平均含量为0.31mg·g-1。结论该方法简便、准确、可靠,可作为西伯利亚接骨木药材白桦脂酸的含量测定方法。

关键词：白桦脂酸西伯利亚接骨木 HPLC法

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正交实验优化新疆沙棘果渣总黄酮的提取工艺

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西北药学杂志 2016年第2期31卷 119-121页

作者：帕塔尔.尼牙孜邱远金王婷媛朱国强贾晓光蔡永国新疆大学生命科学院乌鲁木齐830049 新疆维吾尔自治区中药民族药研究所乌鲁木齐830002 新疆慧华沙棘生物科技有限公司阿勒泰836200

目的对新疆青河县沙棘果渣中总黄酮的提取工艺进行正交优化。方法通过单因素实验,确定实验因素与水平;采用正交实验设计法优化沙棘果渣总黄酮的提取工艺条件。结果最佳工艺条件:乙醇体积分数为50%,提取时间为1.5h,料液比为1∶20,提取3... 详细信息

目的对新疆青河县沙棘果渣中总黄酮的提取工艺进行正交优化。方法通过单因素实验,确定实验因素与水平;采用正交实验设计法优化沙棘果渣总黄酮的提取工艺条件。结果最佳工艺条件:乙醇体积分数为50%,提取时间为1.5h,料液比为1∶20,提取3次。在此优化条件下,沙棘果渣总黄酮含量可达53.73mg·g^(-1)。结论新疆青河县沙棘果渣总黄酮含量高。优化了沙棘果渣总黄酮提取工艺,工艺操作简单,提取率高,为产业化生产提供指导和理论依据。

关键词：沙棘沙棘果渣总黄酮正交实验

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