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

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 stability.However,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient conditions.Herein,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 phase.Due 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 hysteresis.As 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+)doping.Moreover,the Sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and moisture.Due 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 reduced.This 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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Rapid and controllable in-situ self-assembly of main-group metal nanofilms for highly efficient CO_(2)electroreduction to liquid fuel in flow cells

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Nano Research 2024年第6期17卷 5718-5725页

作者： Miao Wang Huaizhu Wang Yaoda Wang junchuan liang Mengfei Zhu Jiarui Li 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 MaterialsTianchang New Materials and Energy Technology Researc

The electrocatalytic reduction of CO_(2)is a promising pathway to generate renewable fuels and chemicals.However,its advancement is impeded by the absence of electrocatalysts with both high selectivity and stability.Here,we present a scalable in-situ thermal evaporation technique for synthesizing series of Bi,In,and Sn nanofilms on carbon felt(CF)substrates with a high-aspect-ratio structure.The resulting main-group metal nanofilms exhibit a homogeneously distributed and highly exposed catalyst surface with ample active sites,thereby promoting mass transport and ad-/desorption of reaction intermediates.Benefiting from the unique fractal morphology,the Bi nanofilms deposited on CF exhibit optimal catalytic activities for CO_(2)electroreduction among the designed metal nanofilms electrodes,with the highest Faradaic efficiency of 96.9%for formate production at−1.3 V vs.reversible hydrogen electrode(RHE)in H-cell.Under an industrially relevant current density of 221.4 mA·cm−2 in flow cells,the Bi nanofilms retain a high Faradaic efficiency of 81.7%at−1.1 V(vs.RHE)and a good long-term stability for formate production.Furthermore,a techno-economic analysis(TEA)model shows the potential commercial viability of electrocatalytic CO_(2)conversion into formate using the Bi nanofilms catalyst.Our results offer a green and convenient approach for in-situ fabrication of stable and inexpensive thin-film catalysts with a fractal structure applicable to various industrial settings.

关键词： CO_(2)electroreduction non-noble metal nanofilms flow cells efficiency and selectivity techno-economic analysis

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2D black arsenic phosphorous

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Journal of Semiconductors 2024年第3期45卷 1-3页

作者： junchuan liang Yi Hu Liming Ding Zhong Jin Key Laboratory of Mesoscopic Chemistry(MoE) School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Since the successful exfoliation of graphene in 2014,twodimensional(2D)materials have explosively increased in the past few years[1].2D pnictogen materials with intriguing properties beyond graphene are gradually coming into eyesight,such as black phosphorous(BP)[2],arsenene[3],antimonene[4],bismuthine[5],etc.BP is a star material in 2D materials.

关键词： materials graphene bismuth

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2D layered black arsenic-phosphorus materials:Synthesis,properties,and device applications

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Nano Research 2022年第4期15卷 3737-3752页

作者： junchuan liang Yi Hu Kaiqiang Zhang Yaoda Wang Xinmei Song Anyang Tao Yuzhu Liu Zhong Jin MOE Key Laboratory of Mesoscopic Chemistry MOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Shenzhen Research Institute of Nanjing University Shenzhen 518063China

Phosphorene,especially black phosphorus(BP),has attracted considerable attention due to the unique characteristics,such as tunable direct bandgap,high carrier mobility,and strong in-plane anisotropy.Recently,a new modification strategy for black phosphorus has been developed by alloying black phosphorus with the congener element arsenic.The elemental composition tuning of black phosphorus with arsenic can not only maintain its special crystal structure and high anisotropy but also modify its electrical and optical properties for the further applications of multifunctional devices.The achieved two-dimensional(2D)black arsenic-phosphorus materials exhibit outstanding optical,electrical,and photoelectric properties,such as very narrow band gap,anisotropic infrared absorption,and bipolar transfer characteristics,presenting great potential in infrared photodetectors and highperformance field effect transistors(FETs).In this review,we introduce the recent progress made in the synthesis and applications of black arsenic-phosphorus,and provide an outlook and perspectives on the current challenges and future opportunities in this field.We hope that this review can bring new insights and inspirations on the further development of 2D black arsenic-phosphorus based materials and devices.

关键词： black arsenic-phosphorus two-dimensional(2D)materials black phosphorus field effect transistors mid-infrared photodetectors

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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 films.Herein,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 ripening.Meanwhile,a novel halide-free passivator,benzylammonium formate(BAFa),was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination.As 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 heat.This 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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2D arsenenes

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Journal of Semiconductors 2022年第3期43卷 1-4页

作者： Yi Hu junchuan liang Lixiu Zhang Zhong Jin Liming Ding Key Laboratory of Mesoscopic Chemistry(MOE) School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Shenzhen Research Institute of Nanjing University Shenzhen 518063China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Graphene has raised a huge wave in 2D materials field,breeding lots of graphene analogs with applications in optical and electrical devices,energy conversion and storage,bio-logy,etc.[1,2].Graphene presents superior carrier mobility,while its zero-bandgap restricts its transistor application.To make up this shortcoming,new 2D materials with certain bandgaps and high carrier mobility are being developed.Two typical materials are transition metal dichalcogenides(TMDs)and black phosphorus,which exhibit layered structure,layer-dependent band structure and strong quantum con-straints[3−5].As a congener of phosphorus,arsenic can complement the bandgap of existed 2D materials[6−18].

关键词： phosphorus restrict structure

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从强学会到《时务报》:《师友绪余》中的梁启超

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中国出版史研究 2021年第1期 120-134页

作者：艾俊川《金融时报》

光绪二十一年(1895),梁启超到北京参加会试。考试之前,他与康有为发起公车上书,落第后又一起组织强学会,这成为他参与政治活动的开端。在强学会创办前后,梁启超主办《万国公报》和《中外纪闻》两份报纸,开启了他的新闻出版生涯。本文通... 详细信息

光绪二十一年(1895),梁启超到北京参加会试。考试之前,他与康有为发起公车上书,落第后又一起组织强学会,这成为他参与政治活动的开端。在强学会创办前后,梁启超主办《万国公报》和《中外纪闻》两份报纸,开启了他的新闻出版生涯。本文通过对《师友绪余》中梁氏书札的解析,钩沉其走进出版领域前后的史实。

关键词：《师友绪余》强学会《时务报》梁启超

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电针“曲池”、“足三里”对局灶性脑梗死大鼠大脑皮层尼氏小体和运动功能的影响

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广西医科大学学报 2018年第5期35卷 592-596页

作者：张俊川吴新贵曹香玲梁欣周丽芳刘建伟广西医科大学第一附属医院南宁530021

目的:观察电针"曲池"、"足三里"对局灶性脑梗死大鼠损伤侧的脑组织病理学和运动功能的影响及可能机制。方法:将60只雄性Sprague-Dawley大鼠随机分为假手术组(6只)和手术组(54只),手术组用改良Longa线栓法闭塞右侧大脑中动脉制备局灶性... 详细信息

目的:观察电针"曲池"、"足三里"对局灶性脑梗死大鼠损伤侧的脑组织病理学和运动功能的影响及可能机制。方法:将60只雄性Sprague-Dawley大鼠随机分为假手术组(6只)和手术组(54只),手术组用改良Longa线栓法闭塞右侧大脑中动脉制备局灶性脑梗死模型,将造模成功的48只大鼠随机分为模型组和电针组,每组24只。电针组穴取双侧"曲池""足三里"电针刺激,假手术组和模型组不作任何处理。分别于术前及术后3d、7d、14d、28d,采用Bederson评分法评价大鼠神经功能,采用错步实验评估大鼠的前肢运动功能。Nissl染色和苏木精—伊红(HE)染色观察大鼠脑组织病理学形态变化。结果:术前1d和术后3d,3组大鼠神经功能缺损评分比较差异无统计学意义(P>0.05),术后7d、14d、28d,电针组神经功能缺损评分明显低于模型组(P0.05),而术后7d、14d、28d,电针组错步率较术后3d及模型组显著降低(P<0.05)。HE染色显示:术后3d电针组局灶梗死区神经细胞缺血性损伤较模型组轻,术后7d、14d、28d电针组较模型组神经元逐渐增多,细胞排列趋于紧密,缺血明显改善。Nissl染色显示:术后3d时,模型组损伤侧神经细胞肿胀破碎,数量减少,尼氏小体肿胀破碎,7d尼氏小体溶解破碎,14d、28d细胞减少,胞体尼氏小体消失;电针组14d细胞胞浆深染,尼氏小体有所增加,28d细胞皱缩,尼氏小体增加明显。结论:电针"曲池""足三里"可能通过增加尼氏小体的数量来保护受损的神经细胞,维持其细胞稳态,进而促进局灶性脑梗死大鼠运动功能的恢复。

关键词：电针脑梗死曲池足三里尼氏小体运动功能

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河西地区适宜种植水果萝卜品种的筛选

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西北农林科技大学学报（自然科学版） 2023年第8期51卷 99-106页

作者：栾倩倩蔺毅严宗山李彦荣陈亮杨世梅王翠丽周彦芳甘肃省农业工程技术研究院设施农业与装备研究所甘肃武威733006

【目的】在河西地区引进8种国内优质的水果萝卜,筛选适宜当地种植的水果萝卜品种,为新品种选育、种质资源创新和新品种推广提供理论依据。【方法】选取适宜鲜食的8种水果萝卜品种(七星、华懿水果萝卜、潍县萝卜、串心红、苹果脆、申萌... 详细信息

【目的】在河西地区引进8种国内优质的水果萝卜,筛选适宜当地种植的水果萝卜品种,为新品种选育、种质资源创新和新品种推广提供理论依据。【方法】选取适宜鲜食的8种水果萝卜品种(七星、华懿水果萝卜、潍县萝卜、串心红、苹果脆、申萌脆梨、醉红和君川景福,依次编号为T1~T8)为试材,测定叶长、叶宽、最大展幅、地上部根长、根粗,气孔导度(G_(s))、净光合速率(P_(n))、胞间CO_(2)浓度(C_(i))、蒸腾速率(T_(r))、叶绿素含量SPAD值、水分利用效率(WUE),以及可溶性固形物、维生素C、可溶性糖、粗纤维含量和产量等指标,结合感官评价法对水果萝卜品质进行综合评价。【结果】8种水果萝卜出苗率有差异,出苗最早的为T2;8种水果萝卜果实发育时间为40~48 d,生长势和整齐度表现良好;植株生长性状存在丰富的多样性,T7地上部根最长,T2根最粗,T7叶长和叶宽显著高于其余品种(T6、T8叶宽除外);T2叶片P_(n)、G_(s)、C_(i)、T_(r)、SPAD表现最好;WUE呈先升后降的趋势(除T8外);不同品种风味品质的感官评价综合得分为15.50~22.31,T2最高;不同品种可溶性固形物含量为7.06~10.29 mg/g,维生素C含量为9.75~15.23 mg/hg,可溶性糖含量为4.83~9.16 mg/g,粗纤维含量为12.27%~18.87%;T2的单根质量、小区产量和单位面积产量最高,较T7分别显著增加73.00%,55.05%和54.21%。【结论】引种河西地区后,8种水果萝卜品种农艺性状和果实品质表现出丰富的多样性,其中T2的综合得分和产量最高,适宜作为河西地区水果萝卜种植及种质创新的材料。

关键词：水果萝卜品种选育河西地区

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