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Mixed Cations Enabled Combined Bulk and Interfacial Passivation for Efficient and Stable Perovskite Solar Cells

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Nano-Micro Letters 2023年第8期15卷 116-127页

作者： Pengfei Wu Shirong Wang Jin Hyuck Heo Hongli Liu xihan chen Xianggao Li Fei Zhang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072People’s Republic of China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072People’s Republic of China Department of Chemical and Biological Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 17104Republic of Korea SUSTech Energy Institute for Carbon Neutrality Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055People’s Republic of China

Here,we report a mixed GAI and MAI(MGM)treatment method by forming a 2D alternating-cation-interlayer(ACI)phase(n=2)perovskite layer on the 3D perovskite,modulating the bulk and interfacial defects in the perovskite films simultaneously,leading to the suppressed nonradiative recombination,longer lifetime,higher mobility,and reduced trap ***,the devices’performance is enhanced to 24.5%and 18.7%for 0.12 and 64 cm^(2),*** addition,the MGM treatment can be applied to a wide range of perovskite compositions,including MA-,FA-,MAFA-,and CsFAMA-based lead halide perovskites,making it a general method for preparing efficient perovskite solar *** encapsulation,the treated devices show improved stabilities.

关键词： Alternating-cation-interlayer Bulk defects Interfacial passivation Perovskite solar cells

Unraveling abnormal buried interface anion defect passivation mechanisms depending on cation-induced steric hindrance for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2023年第5期80卷 1-9,I0001页

作者： Dongmei He Ru Li Baibai Liu Qian Zhou Hua Yang Xuemeng Yu Shaokuan Gong xihan chen Baomin Xu Shangfeng Yang Jiangzhao chen Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education) College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Bejing 100049Chin SUSTech Energy Institute for Carbon Neutrality Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhen 518055GuangdongChin Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

Although ionic liquids(ILs)have been widely employed to heal the defects in perovskite solar cells(PSCs),the corresponding defect passivation mechanisms are not thoroughly understood up to ***,we first reveal an abnormal buried interface anion defect passivation mechanism depending on cationinduced steric *** IL molecules containing the same anion([BF4]^(-))and different sizes of imidazolium cations induced by substituent size are used to manipulate buried *** was revealed what passivated interfacial defects is mainly anions instead of *** and experimental results demonstrate that the large-sized cations can weaken the ionic bond strength between anions and cations,and facilitate the interaction between anions and SnO2as well as perovskites,which is conducive to interfacial defect passivation and ameliorating interfacial *** can be concluded that interfacial chemical interaction strength and defect passivation effect are positively correlated with the size of *** discovery breaks conventional thinking that large-sized modification molecules would weaken their chemical interaction with *** with the control device(21.54%),the device based on 1,3-Bis(1-adamantyl)-imidazolium tetrafluoroborate(BAIMBF4)with maximum size cations achieves a significantly enhanced efficiency of 23.61%along with much increased moisture,thermal and light stabilities.

关键词： Perovskite solar cells Buried interface Ionic liquid Anion defect passivation mechanism Cation-induced steric hindrance

Bottom-up holistic carrier management strategy induced synergistically by multiple chemical bonds to minimize energy losses for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2023年第1期76卷 277-287,I0008页

作者： Baibai Liu Ru Li Qixin Zhuang Xuemeng Yu Shaokuan Gong Dongmei He Qian Zhou Hua Yang xihan chen Shirong Lu Zong-Xiang Xu Zhigang Zang Jiangzhao chen Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education) College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China SUSTech Energy Institute for Carbon Neutrality Department of Mechanicaland Energy EngineeringSouthern University of Science and TechnologyShenzhen 51855Guangdong China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Chongqing Institute of Green and Inteligent Technology University of Chinese Academy of Sciences(UCAS Chongqing)Chinese Academy of SciencesChongqing 400714China Department of Chemistry Southerm University of Science and TechnologyShenzhen 518055GuangdongChina

The defects from electron transport layer,perovskite layer and their interface would result in carrier nonradiative recombination *** buried interfacial contact is detrimental to charge extraction and device ***,we report a bottom-up holistic carrier management strategy induced synergistically by multiple chemical bonds to minimize bulk and interfacial energy losses for high-performance perovskite photovoltaics.4-trifluoromethyl-benzamidine hydrochloride(TBHCl)containing–CF_(3),amidine cation and Cl^(-)is in advance incorporated into SnO_(2)colloid solution to realize bottom-up *** synergistic effect of multiple functional groups and multiple-bond-induced chemical interaction are revealed theoretically and experimentally.F and Cl^(-)can passivate oxygen vacancy and/or undercoordinated Sn^(4+)defects by coordinating with Sn^(4+).The F can suppress cation migration and modulate crystallization via hydrogen bond with FA^(+),and can passivate lead defects by coordinating with Pb^(2+).The–NH_(2)–C=NH^(+)_(2)and Cl^(-)can passivate cation and anion vacancy defects through ionic bonds with perovskites,*** TBHCl modification,the suppression of agglomeration of SnO_(2)nanoparticles,bulk and interfacial defect passivation,and release of tensile strains of perovskite films are demonstrated,which resulted in a PCE enhancement from 21.28%to 23.40%and improved *** post-treatment,the efficiency is further improved to 23.63%.

关键词： Perovskite solar cells Bottom-up holistic carrier management strategy Functional group synergistic effect Defect passivation Stress release

Facile Blinking Dyes with Spontaneous Enol-Keto Tautomerism for Super-Resolution Imaging of Subcellular Targets

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CCS Chemistry 2024年第11期6卷 2770-2782页

作者： Ji Gao Weijun Wu Lulu Zhou Shaokuan Gong Chong Li xihan chen Yiming Li Kai Li Guangdong Provincial Key Laboratory of Advanced Biomaterials Department of Biomedical EngineeringSouthern University of Science and Technology(SUSTech)Shenzhen 518055 SUSTech Energy Institute for Carbon Neutrality Department of Mechanical and Energy EngineeringSouthern University of Science and Technology(SUSTech)Shenzhen 518055

Fluorophores with controlled on–off switching properties and subcellular targeting abilities are essential for modern super-resolution microscopy ***,the effective design strategies of blinking fluorophores are still limited with scarce building blocks(e.g.,rhodamine and cyanine analogues),and sophisticated functionalization is always required for organelle ***,exploring live-cell compatible and organelle-targetable fluorophores with a new blinking mechanism is of broad interest to promote the emerging development of superresolution ***,we report a type of live-cell permeable fluorophore with a facile synthesis strategy to facilitate the imaging of lipid droplets and lysosomes using single-molecule localization *** fluorophores only require a two-step synthetic *** show signature enol-keto tautomerism by spontaneous proton transfer at the ground state without additional photoactivation,which ensures blinking performance by exciting the minor portion of molecules in keto *** fluorescence switching mechanism provides a distinct character from that of previously reported live-cell permeable dyes for super-resolution imaging,while the specific organelle binding affinity can be tuned by simply changing the targeting moiety of fluorophores.

关键词： spontaneous enol-keto tautomerism fluorophore proton transfer fluorescence imaging subcellular target

考虑定桨距和变桨距风机联合控制的风电场有功功率控制策略

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电网技术 2015年第7期39卷 1892-1899页

作者：陈曦寒高赐威江苏省城市规划设计研究院江苏省南京市210036 东南大学电气工程学院江苏省南京市210096

风电出力的随机性对电网运行带来不利的影响,随着大规模风电接入电网,电网公司要求风电场必须具备一定的有功功率调节能力。考虑到目前部分风电场定桨距风机和变桨距风机并存的现状,提出了一种考虑定桨距和变桨距风机联合控制的风电场... 详细信息

风电出力的随机性对电网运行带来不利的影响,随着大规模风电接入电网,电网公司要求风电场必须具备一定的有功功率调节能力。考虑到目前部分风电场定桨距风机和变桨距风机并存的现状,提出了一种考虑定桨距和变桨距风机联合控制的风电场有功功率控制策略。首先根据风电间接功率预测方法分析风电场可调有功功率潜力,并通过优先调整变桨距风力发电机组出力来减少定桨距风机的启停次数,且所提策略仅在变桨距机组无法满足功率调节要求时,对定桨距风机进行启停控制。提出的定桨距风机启停算法考虑选择影响较小的风电机组进行启停控制,以尽可能减小系统控制的超调量。以内蒙古某风电场实测数据进行算例分析,结果验证了所提控制策略的有效性。

关键词：定桨距风机变桨距风机风电预测有功功率控制

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铸造铝合金轮毂的热处理工艺与组织性能研究

铸造技术 2018年第5期39卷 1115-1117,1120页

作者：陈希韩敖兵贵阳职业技术学院装备制造分院贵州贵阳550081 四川大学材料科学与工程学院四川成都610065

研究了固溶和时效热处理以及涂装对A356合金轮毂的力学性能和显微组织的影响,并对拉伸断口形貌进行了观察。结果表明,A356合金轮毂适宜的热处理工艺为:固溶温度为530℃、固溶时间为3 h、淬火温度为60℃、淬火时间为120 min、时效温度为... 详细信息

研究了固溶和时效热处理以及涂装对A356合金轮毂的力学性能和显微组织的影响,并对拉伸断口形貌进行了观察。结果表明,A356合金轮毂适宜的热处理工艺为:固溶温度为530℃、固溶时间为3 h、淬火温度为60℃、淬火时间为120 min、时效温度为160℃和时效时间3 h;铸态A356合金轮毂由初生α-Al枝晶和不均匀分布的共晶硅相组成,T6和T6+涂装态A356合金中的共晶硅相发生球化,尺寸相对较小且分布更加均匀;A356合金轮毂的抗拉强度和断后伸长率从高至低依次为T6+涂装态、T6态、铸态。

关键词：低压铸造 A356合金轮毂 T6热处理组织性能

妊娠晚期血液NLR联合fFN、宫颈长度对早产风险的预测价值

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分子诊断与治疗杂志 2022年第3期14卷 397-400页

作者：陆逊王敬张雯雯陈希罕北京市朝阳区妇幼保健院检验科北京100021

目的探讨孕产妇妊娠晚期外周血中性粒细胞/淋巴细胞比值(NLR)联合胎儿纤维连接蛋白(fFN)、宫颈长度对早产风险的预测价值。方法选取2017年6月至2019年5月北京市朝阳区妇幼保健院进行产前常规产检和分娩的早产产妇(早产组)39例与足月妊... 详细信息

目的探讨孕产妇妊娠晚期外周血中性粒细胞/淋巴细胞比值(NLR)联合胎儿纤维连接蛋白(fFN)、宫颈长度对早产风险的预测价值。方法选取2017年6月至2019年5月北京市朝阳区妇幼保健院进行产前常规产检和分娩的早产产妇(早产组)39例与足月妊娠产妇(对照组)52例作为研究对象,比较两组产妇一般情况、妊娠晚期血检参数、宫颈阴道分泌物中fFN与宫颈长度,采用多因素Logistic回归分析早产的独立危险因素,ROC曲线分析该独立因素对早产的预测价值。结果两组产妇年龄、BMI、孕次、产次、淋巴细胞水平比较,差异无统计学意义(P>0.05)。两组产妇孕周、白细胞水平、中性粒细胞水平、NLR、宫颈长度和fFN比较,差异有统计学意义(P<0.05)。Logistic回归分析结果显示,NLR、fFN水平升高以及宫颈长缩短是发生早产的独立影响因素(P<0.05)。绘制NLR、fFN水以及宫颈长度对胎儿早产的ROC曲线分析显示,NLR、fFN水以及宫颈长度的最佳截断值分别为4.185、52.035和24.570,联合检测的AUC、敏感度和特异性均明显高于NLR、fFN水以及宫颈长度独立检测。结论NLR、fFN水平升高、宫颈长度缩短是孕产妇孕晚期发生早产风险的独立危险因素,及时对妊娠晚期的孕产妇进行血清NLR、fFN、宫颈长度联合检测可以提高临床诊断率,及早做好防护,有利于降低早产风险。

关键词：中性粒细胞/淋巴细胞比值胎儿纤维连接蛋白宫颈长度早产

妊娠期糖尿病孕妇糖化白蛋白、糖化血红蛋白与新生儿体重关系

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中国计划生育学杂志 2021年第4期29卷 827-829页

作者：陆逊陈希罕朱根华孙越红北京市朝阳区妇幼保健院 100021 北京天坛医院

目的:探讨糖化白蛋白(GA)、糖化血红蛋白(HbA1c)与妊娠期糖尿病(GDM)孕妇分娩新生儿体重的关系。方法:选取2018年1月—2018年12月在本院住院分娩的孕妇,其中妊娠期糖尿病孕妇131例为GDM组,血糖正常的健康孕妇89例为对照组。高效液相色... 详细信息

目的:探讨糖化白蛋白(GA)、糖化血红蛋白(HbA1c)与妊娠期糖尿病(GDM)孕妇分娩新生儿体重的关系。方法:选取2018年1月—2018年12月在本院住院分娩的孕妇,其中妊娠期糖尿病孕妇131例为GDM组,血糖正常的健康孕妇89例为对照组。高效液相色谱法检测HbA1c,酶法检测GA。采用Pearson相关分析评价HbA1c、GA与GDM孕妇新生儿出生体重关系,采用受试者工作特征(ROC)曲线分析HbAlc预测巨大儿的最佳临界值。结果:GDM组HbA1c、GA水平、新生儿出生体重及发生巨大儿比例均高于对照组(P0.05)。巨大儿发生率HbA1c低组最低(12.5%),中组次之(14.3%),高组最高(29.2%)(P<0.05)。GDM组HbA1c水平诊断巨大儿的ROC曲线下面积(AUC)和95%CI分别为0.684和(0.554~0.767),当截断点为6.3%时,诊断灵敏度75.9%、特异度60.3%。结论:GDM孕妇HbA1c水平与新生儿出生体重有关,HbA1c水平越高分娩巨大儿概率越高,其水平对巨大儿预测有一定指导意义。

关键词：妊娠期糖尿病新生儿体重糖化白蛋白糖化血红蛋白预测

妊娠期糖尿病患者血清sdLDL⁃C、Hba1c水平与血脂和胰岛素抵抗的关系

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分子诊断与治疗杂志 2022年第4期14卷 543-547页

作者：陆逊王敬张雯雯陈希罕北京市朝阳区妇幼保健院检验科北京100021

目的探讨妊娠期糖尿病(GDM)患者血清小而密低密度脂蛋白胆固醇(sdLDL⁃C)、糖化血红蛋白(HbA1c)水平与血脂和胰岛素抵抗的关系。方法选取2018年1月至2020年12月北京市朝阳区妇幼保健院的87例GDM患者与43例正常孕妇的临床资料进行分析,其... 详细信息

目的探讨妊娠期糖尿病(GDM)患者血清小而密低密度脂蛋白胆固醇(sdLDL⁃C)、糖化血红蛋白(HbA1c)水平与血脂和胰岛素抵抗的关系。方法选取2018年1月至2020年12月北京市朝阳区妇幼保健院的87例GDM患者与43例正常孕妇的临床资料进行分析,其中GDM患者设立为观察组,正常孕妇设立为对照组,对比两组年龄、孕周、BMI、FPG、餐后2 h血糖(2hPG)、空腹胰岛素(FINS)、sdLDL⁃C、Hba1c、三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL⁃C)、低密度脂蛋白胆固醇(LDL⁃C)、胰岛素抵抗指数(HOMA⁃IR)变化,采用分层回归模型分析sdLDL⁃C、Hba1c与血脂和胰岛素抵抗指数(HOMA⁃IR)的关系。结果两组在年龄、孕周、BMI等一般资料比较,差异无统计学意义(P>0.05);观察组的FPG、2hPG、FINS、sdLDL⁃C、Hba1c、TG、TC、HDL⁃C、HOMA⁃IR高于对照组,而LDL⁃C低于对照组,差异有统计学意义(P0.05)。针对模型2,其在模型1的基础上加入“HOMA⁃IR”后,差异无统计学意义(P>0.05);TG、HDL⁃C会对Hba1c产生显著的正向影响关系(t=2.774、5.636,P0.05)。针对模型2,其在模型1的基础上加入“HOMA⁃IR”后,F值呈现出显著性变化,HOMA⁃IR会对Hba1c产生显著的正向影响关系(t=5.620,P<0.05)。结论妊娠期糖尿病患者sdLDL⁃C、Hba1c水平与血脂和胰岛素抵抗具有一定相关性,有望作为诊断GDM的客观指标。

关键词：妊娠期糖尿病小而密低密度脂蛋白胆固醇糖化血红蛋白血脂胰岛素抵抗