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Carbon-based perovskite solar cells with electron and hole-transporting/-blocking layers

Materials Futures 2023年第2期2卷 8-23页

作者： Wenjin Yu Yu Zou Shining Zhang Zishi Liu cuncun wu Bo Qu Zhijian Chen Lixin Xiao State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People’s Republic of China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130People’s Republic of China

Towards commercialization of perovskite solar cells(PSCs),further reducing the cost and increasing the stability of PSCs have been the most important tasks of researchers,as the efficiency of single-junction PSCs has reached a competitive level among all kinds of single-junction solar ***-electrode-based PSCs(CPSCs),as one of the most promising constructions for achieving stable economical PSCs,now attract enormous attention for their cost-effectiveness and ***,we briefly review the development of CPSCs and reveal the importance of n-i-p architecture for state-of-the-art ***,despite their promising potential,challenges still exist in CPSCs in the n-i-p architecture,which mainly stem from the incompact contact of the hole-transporting layer(HTL)/carbon ***,new carbon materials and/or novel manufacturing methods should be *** addition,HTL is yet to be appropriate for state-of-the-art CPSCs because the fabrication of carbon electrode could result in the destruction of the *** further enhance the performance of CPSCs,both the HTL and electron transport layer as well as their interfaces with perovskite active layer need to be *** recommend that the perovskite active layer,with its long carrier lifetime,strong carrier transport capability,and long-term stability,is necessary as well for improved performance of *** also highlight current researches on CPSCs and provide a systematic review of various types of regulation tools.

关键词： carbon-electrode-based PSCs n-i-p architecture electron transport layer hole-transporting layer interface

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Official Life： Homoerotic Self-Representation and Theater in Li Ciming＇s Yuemantang Riji

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Frontiers of History in China 2014年第2期9卷 202-224页

作者： cuncun wu School of Chinese University of Hong Kong Hong Kong China

Homoerotic play was central to the recreational culture of theatergoing from the mid-Qing to the beginning of the twentieth century, especially in Beijing. Theatergoing literati in particular played an important role in the production and reproduction of an elite, theater-based, homoerotic sub-culture, heavily investing themselves in the pursuit of social distinction. While it is important not to underestimate the importance of lower-status audiences in the popularisation of Peking opera, the literati doubtlessly considered themselves the aesthetic vanguard in terms of both the judgment of staged drama and the literary promotion of romances between themselves and the boy-actors offstage. Unlike ＂flower-guides＂（Huapu） that circulated between friends, diaries from the period record private thoughts on the scene that would not, and could not, be expressed in public. Drawing on the diary of the influential late-Qing scholar-official Li Ciming （1830-94）, I focus on the question of how an understanding of public participation entered Li＇s diaries, as well as examining what his self-representations have to say about Qing literati ownership of homoerotic sensibilities and spaces, which is to say, how he saw himself as presenting to others and how that self-presentation is （re-）presented in his writing.

关键词： Li Ciming (1830-94) diaries homoeroticism theater Beijing lateQing dynasty boy-actors

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《三才福》与清中晚期姑苏平民社会和价值观

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南开学报（哲学社会科学版） 2022年第4期 163-173页

作者：吴存存香港大学中文学院中国香港999077

《三才福》是一部收藏在莫斯科国家图书馆(RSL)的清中期苏白传奇抄本,两卷,共32折,保存完好,未见于任何中文曲目或书目。此剧大量使用当时苏州话做对白,带着浓厚姑苏平民生活气息,对探索清代苏州都市平民生活、尤其是对平民女性的理解,... 详细信息

《三才福》是一部收藏在莫斯科国家图书馆(RSL)的清中期苏白传奇抄本,两卷,共32折,保存完好,未见于任何中文曲目或书目。此剧大量使用当时苏州话做对白,带着浓厚姑苏平民生活气息,对探索清代苏州都市平民生活、尤其是对平民女性的理解,颇具独特的意义。

关键词：《三才福》苏白传奇都市平民生活平民女性

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Tuning the bandgap of double perovskites

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Journal of Semiconductors 2021年第12期42卷 6-8页

作者： Yu Zou Wenjin Yu Lixiu Zhang cuncun wu Lixin Xiao Liming Ding State Key Laboratory for Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871China School of Materials Science and Engineering State Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300130China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

With great achievements in efficiency,stability,and large-scale preparation of perovskite solar cells(PSCs),the com-mercialization of PSC is ongoing,but there is still an issue on lead *** lead content in the device is low,the water solubility of lead salts leads to potential environmental *** present,the non-lead perovskites studied in-clude:divalent metal perovskite(e.g.,Sn^(2+),Ge^(2+),Cu^(2+)),trivalent metal perovskite(e.g.,Bi^(3+),Sb^(3+),In^(3+)),tetravalent met-al double perovskite(e.g.,Sn^(4+),Pd^(4+),Ti^(4+),Pt^(4+))and mono-trivalent mixed double perovskite(e.g.,Ag+and Bi^(3+),Ag+and In^(3+),Ag^(+)and Sb^(3+)).Their properties are summarized in Table *** the first report on non-lead double perovskite Cs2AgBiBr6 in 2016^([1]).

关键词： perovskite double valent

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Bi-based Lead-free Perovskite(-like) Optoelectronic Devices

Bi-based Lead-free Perovskite(-like) Optoelectronic Devices

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： Qiaohui Zhang cuncun wu Lixin Xiao Department of Physics Peking University

Organic-inorganic hybrid perovskites have attracted tremendous attention and shown great application potential in the field of solar cell,LED and photodetector,due to their outstanding photoelectric properties,such as appropriate direct bandgap,balanced high carrier mobility and long carrier diffusion *** the toxic lead is a large obstacle to ***,we have made some efforts in Bi-based lead-free perovskite(-like) optoelectronic *** first fabricated double perovskite CsAgBiBr based planar heterojunction solar cell by a low-pressure assisted solution method under ambient condition,which presents a highest PCE of 1.44%.Moreover,we reported highly efficient and stable self-powered ultraviolet and deep-blue photodetector based on CsAgBiBr/SnO heterojunction with two responsivity peaks for ultraviolet-A(320-400 nm) and deep-blue light ***,we demonstrated a record Voc of 0.88 V and PCE of 2.80% in planar heterojunction AgBiI solar cell,in which lithium bis(trifluoromethylsulfonyl)-imide(Li-TFSI) was employed as precursor additive to obtain a fully covered pinhole-free AgBiI ***,we also reviewed Bi-based halide materials and their devices,where structural and optoelectronic properties are summarized and highlighted.

关键词： Bi-based halide material Cs2AgBiBr6 AgBiI4

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A new method to get fast and high crystallization of perovskite film by current annealing

A new method to get fast and high crystallization of perovsk...

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第四届新型太阳能电池学术研讨会

作者： Wei Luo cuncun wu Weihai Sun Lixin Xiao Zhijian Chen State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University

High efficiency organic–inorganic hybrid perovskite solar cells(PSC) have experienced rapid development and attracted significant attention in recent *** crystal growth process as an important factor will significantly influence the quality of perovskite films and the device performance, which usually requires thermal annealing for 10 or more ***, we demonstrate a new method to get highly crystallization of perovskite film by current annealing(CA) for just 5 *** fast crystallization process introduced by large current annealing effectively increased the grain size and crystallinity of perovskite, thus leading to higher Voc and *** average PCE of 17.02% was obtained, which is higher than that of the devices with thermal annealing process(16.05%).Besides, our current annealing process has less energy loss and time consumption, which is also friendly to the industrial mass production.

关键词： perovskite solar cell current annealing crystallization

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钙钛矿太阳能电池的内建电场调控策略研究进展

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科学通报 2023年第1期68卷 39-52页

作者：张世宁张贤杨爽俞文锦任博文吴存存肖立新河北工业大学理学院天津300401 河北工业大学材料科学与工程学院天津300401 北京大学物理学院北京100871

钙钛矿太阳能电池(perovskite solar cells,PSCs)作为一种高效率、低成本的光伏器件引起了国内外学者的广泛关注.电池内部的载流子分离和传输是器件工作的核心过程,直接关系到器件的光电转化效率.异质结形成的内建电场主导着载流子的行... 详细信息

钙钛矿太阳能电池(perovskite solar cells,PSCs)作为一种高效率、低成本的光伏器件引起了国内外学者的广泛关注.电池内部的载流子分离和传输是器件工作的核心过程,直接关系到器件的光电转化效率.异质结形成的内建电场主导着载流子的行为,其强度大小决定器件中电子和空穴的分离效率,所以对内建电场的调控和优化可以从根本上提升电池的性能.本文首先对钙钛矿太阳能电池中的内建电场以及载流子分离机制进行介绍,然后对目前常见的钙钛矿太阳能电池内建电场的调控策略及其对器件性能的影响进行总结,主要包括通过掺杂、构建三维/二维钙钛矿异质结、构建偶极层等调控钙钛矿太阳能电池的内建电场.最后,对钙钛矿太阳能电池的内建电场调控技术进行评价,并对未来该领域的发展进行展望.

关键词：钙钛矿太阳能电池内建电场掺杂三维/二维偶极层

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ZnO/SnO2 Double Electron Transport Layer Guides Improved Open Circuit Voltage for Highly Efficient CH3NH3PbI3?Based Planar Perovskite Solar Cells

ZnO/SnO2 Double Electron Transport Layer Guides Improved Ope...

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第五届新型太阳能电池学术研讨会

作者： Duo Wang cuncun wu Wei Luo Xuan Guo Bo Qu Lixin Xiao Zhijian Chen State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University

The electron transport layer(ETL), as an important component of planar perovskite solar cells(P-PSCs), can effectively extract photon-generated electrons from perovskites and convey them to the cathode;by this token, its properties directly determine the photovoltaic performances of P-PSCs. Herein, we introduce a ZnO/SnO double electron transport layer for CHNHPbI-based P-PSCs, achieving a high open circuit voltage(VOC) of 1.15 V with the power conversion eof 19.1% when the SnO-based devices have a VOC of 1.07 V and a PCE offficiency(PCE) 18.0%;to the best of our knowledge, this is the highest VOC obtained by using an inorganic electron transport layer for pure CHNHPbI-based P-PSCs so far. This result demonstrates that a higher Fermi energy(EF) and conduction band minimum(ECBM) of ETL could drive a higher VOC and a better PCE.

关键词： double electron transport layer perovskite solar cell planar ZnO/SnO2 open circuit voltage

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钙钛矿太阳能电池的大面积成膜方法

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科学通报 2017年第14期62卷 1457-1463页

作者：吴存存孙伟海陈志坚肖立新北京大学物理学院人工微结构与介观物理国家重点实验室北京100871

有机-无机杂化钙钛矿太阳能电池因其较高的光电转化效率引起了人们的广泛研究,但在目前所报道的高效率器件中,电池的有效面积通常仅为0.1 cm^2左右,达不到工业化的要求.钙钛矿电池的大面积制备是其工业化的必经之路.而制备大面积钙钛矿... 详细信息

有机-无机杂化钙钛矿太阳能电池因其较高的光电转化效率引起了人们的广泛研究,但在目前所报道的高效率器件中,电池的有效面积通常仅为0.1 cm^2左右,达不到工业化的要求.钙钛矿电池的大面积制备是其工业化的必经之路.而制备大面积钙钛矿电池的关键在于制备大面积高质量的钙钛矿薄膜.本文将根据大面积钙钛矿太阳能电池所取得的最新成果,对钙钛矿的成膜方法加以总结和评述,为今后大面积钙钛矿电池的发展提供帮助.

关键词：钙钛矿太阳能电池大面积成膜

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Machine Learning (ML)-Assisted Optimization Doping of KI in MAPbI3 Solar Cells

Machine Learning (ML)-Assisted Optimization Doping of KI in ...

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： Sheng Jiang cuncun wu Fan Li Yuqing Zhang Zehao Zhang Qiaohui Zhang Zhijian Chen Bo Qu Lixin Xiao Minlin Jiang Institute for Advanced Study Nanchang University State Key Laboratory for Artificial Microstructures and Mesoscopic Physics Department of PhysicsPeking University

Perovskite solar cells have drawn extensive attention in the photovoltaic(PV) field due to their rapidly increasing ***,additives have become necessary for the fabrication of highly efficient perovskite solar cells(PSCs).Additionally,alkali metal doping has been an effective method to decrease the defect density in the perovskite ***,the traditional trial-and-error method to find the optimal doping concentration is time-consuming and needs a significant amount of raw *** this work,in order to explore new ways of facilitating the process of finding the optimal doping concentration in perovskite solar cells,we applied a machine learning(ML) approach to assist the optimization of KI doping in MAPbI solar *** the aid of ML technique,we quickly found that 3% KI doping could further improve the efficiency of MAPbI solar *** a result,a highest efficiency of 20.91% with high FF of 80 has been obtained for MAPbI solar cells.

关键词： Perovskite solar cell Machine learning KI doping

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