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Multifunctional dual-anion compensation of amphoteric glycine hydrochloride enabled highly stable perovskite solar cells with prolonged carrier lifetime

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Nano Research 2024年第6期17卷 5131-5137页

作者： Lina Qin Mengfei Zhu yuren xia Xingkai Ma Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong Jin State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology Co.Ltd. Nanjing 210093China Suzhou Tierui New Energy Technology Co.Ltd. Suzhou 215228China

Throughout years,the two-step spin-coating process is the most common method to prepare organic lead halide perovskite ***,the short reaction time of dropping the solution at the second step means that PbI2 cannot be completely transformed into perovskite *** solve this problem,we report the introduction of glycine hydrochloride(GlyHCl)into the second step of the two-step spin-coating process to prepare a FA_(0.9)MA_(0.1)PbI_(3-x)%-GlyHCl perovskite material(namely FAMA-x%-GlyHCl,where FA=formamidinium,MA=methylammonium,and x%stands for the molar ratio of GlyHCl added in FA iodide/MA iodide(FAI/MAI)precursor solution).The Cl−ion in GlyHCl assists the formation ofα-phase perovskite,and the-COO−group coordinates with Pb2+cation in a bridging way,making up for the anion vacancy in perovskite lattice and resulting in high absorption *** perovskite solar cells(PSCs)based on FAMA-9%-GlyHCl achieve a long carrier lifetime(527.0 ns),a photoelectric conversion efficiency(PCE)of 19.40%and good thermal stability,maintaining 85.8%of the initial PCE after being continuously heated at 60℃for 500 *** study helps to solve the problem of incomplete reaction in the two-step spin-coating process and puts forward a new solution for preparing high coverage perovskite films with large grain size.

关键词： dual-anion compensation glycine hydrochloride perovskite solar cells carrier lifetime thermal and moisture stability

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Antimony doped CsPbI_(2)Br for high-stability all-inorganic perovskite solar cells

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Nano Research 2024年第3期17卷 1508-1515页

作者： Mengfei Zhu Lina Qin yuren xia Junchuan Liang Yaoda Wang Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong Jin State Key Laboratory of Coordination Chemistry Ministry of Education(MOE)Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology Co. Ltd.Nanjing 210093China Suzhou Tierui New Energy Technology Co. Ltd.Suzhou 215228China

All-inorganic perovskites,adopting cesium(Cs+)cation to completely replace the organic component of A-sites of hybrid organic–inorganic halide perovskites,have attracted much attention owing to the excellent thermal ***,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient ***,we propose an efficient strategy to introduce antimony(Sb^(3+))into the crystalline lattices of CsPbI_(2)Br perovskite,which can effectively regulate the growth of perovskite crystals to obtain a more stable perovskite *** to the much smaller ionic radius and lower electronegativity of trivalent Sb^(3+)than those of Pb^(2+),the Sb^(3+)doping can decrease surface defects and suppress charge recombination,resulting in longer carrier lifetime and negligible *** a result,the all-inorganic perovskite solar cells(PSCs)based on 0.25%Sb^(3+)doped CsPbI_(2)Br light absorber and screen-printable nanocarbon counter electrode achieved a power conversion efficiency of 11.06%,which is 16%higher than that of the control devices without Sb^(3+)***,the Sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and *** to the use of low-cost and easy-to-process nanocarbon counter electrodes,the manufacturing process of the all-inorganic PSCs is very convenient and highly repeatable,and the manufacturing cost can be greatly *** work offers a promising approach to constructing high-stability all-inorganic PSCs by introducing appropriate lattice doping.

关键词： all-inorganic perovskite solar cells Sb doped cesium lead halide perovskites foreign B-site ions hole-conductor-free phase stability improvement

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Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells

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Nano Research 2023年第5期16卷 6849-6858页

作者： Mengfei Zhu yuren xia Lina Qin Kaiqiang Zhang Junchuan Liang Cheng Zhao Daocheng Hong Minghang Jiang Xinmei Song Jie Wei Pengbo Zhang Yuxi Tian Zhong Jin State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu 210023China

Organic–inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances,but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells(PSCs).In particular,the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite ***,we report the adoption of a pseudo-halide anion based ionic liquid additive,1-butyl-3-methylimidazolium thiocyanate(BMIMSCN)for growing ternary cation(CsFAMA,where FA=formamidinium and MA=methylammonium)perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ***,a novel halide-free passivator,benzylammonium formate(BAFa),was employed as a buffering layer on the perovskite films to suppress surface-dominated charge *** a result,the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime(from 79.41 to 201.01 ns),open-circuit voltage(from 1.13 to 1.19 V),photoelectric conversion efficiency(from 18.90%to 22.33%).Moreover,the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and *** work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering.

关键词： organic–inorganic perovskite solar cells pseudo-halide ion liquid additive non-halide ammonium formate passivator crystalline and interface engineering efficiency and stability improvements

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Periostin mediates epithelial-mesenchymal transition through the MAPK/ERK pathway in hepatoblastoma

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Cancer Biology & Medicine 2019年第1期16卷 89-99页

作者： Lu Chen xiangdong Tian Wenchen Gong Bo Sun Guangtao Li Dongming Liu Piao Guo Yuchao He Ziye Chen yuren xia Tianqiang Song Hua Guo Department of Tumor Cell Biology Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and TherapyTianjin Tianjin's Clinical Research Center for Cancer

Objective: The aim of the present study was to analyze the prognostic factors in patients with hepatoblastoma(HB) in our single center and to evaluate periostin(POSTN) expression in HB and its association with clinicopathological variables. In addition, the underlying mechanism of how POSTN promotes HB progression was ***: POSTN expression was investigated in HB tumors by immunohistochemistry(IHC), immunofluorescence(IF) and Western blot(WB). The association among POSTN expression, clinicopathological features and overall survival(OS) was also evaluated. The migration and adhesion ability of HB cells were measured using chemotaxis and cell-matrix adhesion assays,respectively. Epithelial-mesenchymal transition(EMT)-associated markers and activation of the ERK pathway were detected by ***: HB patients had poor prognosis which displayed lymph node metastasis, vascular invasion, POSTN and vimentin expression. POSTN expression was also associated with lymph node metastasis. Furthermore, overexpressed POSTN promoted migration and the adhesive ability of HB cells in vitro. In addition, we demonstrated that POSTN activated the MAPK/ERK pathway, upregulated the expression of Snail and decreased the expression of OVOL2. Finally, POSTN promoted the expression of EMT-associated ***: POSTN might modulate EMT via the ERK signaling pathway, thereby promoting cellular migration and *** study also suggests that POSTN may serve as a therapeutic biomarker in HB patients.

关键词： Periostin hepatoblastoma EMT MAPK/ERK

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非功能型胰腺神经内分泌肿瘤淋巴结清扫的意义及选择

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中华肝胆外科杂志 2019年第1期25卷 49-52页

作者：夏雨人李强天津医科大学肿瘤医院综合外科 300060 天津医科大学肿瘤医院肝胆肿瘤科国家肿瘤临床医学研究中心天津市"肿瘤防治"重点实验室天津市恶性肿瘤临床医学研究中心300060

目的探讨非功能型胰腺神经内分泌肿瘤淋巴结转移的特点及影响因素。方法回顾性分析2000年1月至2013年12月于天津医科大学肿瘤医院行手术治疗的75例非功能型胰腺神经内分泌肿瘤患者的临床病理资料,包括年龄、性别、肿瘤部位、肿瘤直径、... 详细信息

目的探讨非功能型胰腺神经内分泌肿瘤淋巴结转移的特点及影响因素。方法回顾性分析2000年1月至2013年12月于天津医科大学肿瘤医院行手术治疗的75例非功能型胰腺神经内分泌肿瘤患者的临床病理资料,包括年龄、性别、肿瘤部位、肿瘤直径、淋巴结转移情况、手术切缘、病理报告及随访情况,分析淋巴结转移对患者预后的影响以及影响淋巴结转移的相关因素。结果共纳入75例患者,有16例(21.3%)出现淋巴结转移。分析显示,肿瘤直径>3 cm(OR 4.196,P3 cm、病理分级为G3和手术切缘阳性显著影响患者的DFS,与对照组差异有统计学意义(均P3 cm的患者出现淋巴结转移的概率较大,应行包含淋巴结清扫的根治性切除。

关键词：胰腺肿瘤神经内分泌肿瘤淋巴转移外科手术

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胰腺神经内分泌肿瘤的诊断与治疗进展

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中国肿瘤临床 2014年第7期41卷 475-479页

作者：周远达夏雨人李强天津医科大学肿瘤医院肝胆肿瘤科国家肿瘤临床医学研究中心天津市肿瘤防治重点实验室天津市300060

近年许多分子标志物与影像学诊断技术应用于胰腺神经内分泌肿瘤(PNET)的诊断,大幅提高了PNET的诊断准确性。在PNET的治疗方面,手术切除仍是唯一具有治愈可能的治疗方式,根据肿瘤的类型、部位、大小情况可以选择不同的手术方式。而传统... 详细信息

近年许多分子标志物与影像学诊断技术应用于胰腺神经内分泌肿瘤(PNET)的诊断,大幅提高了PNET的诊断准确性。在PNET的治疗方面,手术切除仍是唯一具有治愈可能的治疗方式,根据肿瘤的类型、部位、大小情况可以选择不同的手术方式。而传统的化疗由于不良反应大等原因,临床应用有限。但是随着对PNET发病机制的了解,生长抑素类似物、血管生成抑制剂、mTOR抑制剂等靶向药物已经应用于临床,为PNETs患者带来了希望。

关键词：神经内分泌肿瘤诊断手术靶向治疗

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