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Bridging buried interface enable 24.67%-efficiency doctor-bladed perovskite solar cells in ambient condition

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Nano Research 2024年第9期17卷 8068-8076页

作者： jianhui chang Erming Feng Xiangxiang Feng Hengyue Li Yang Ding Caoyu Long Siyuan Lu Haixia Zhu Wen Deng Jiayan Shi Yingguo Yang Si Xiao Yongbo Yuan Junliang Yang Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of PhysicsCentral South UniversityChangsha 410083China Hunan Key Laboratory of Nanophotonics and Devices School of PhysicsCentral South UniversityChangsha 410083China Textile and Fashion Collage Hunan Institute of EngineeringXiangtan 411101China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Scalable deposition of high-efficiency perovskite solar cells(PSCs)is critical to accelerating their commercial ***,a significant number of defects are distributed at the buried interface of perovskite film fabricated by scalable deposition,exhibiting much negative influence on the efficiency and stability of ***,2-(N-morpholino)ethanesulfonic acid potassium salt(MESK)is incorporated as the bridging layer between the tin oxide(SnO_(2))electron transport layer(ETL)and the perovskite film deposited via scalable two-step doctor *** experiment and simulation results demonstrate that MESK can passivate the trap states of Sn suspension bonds,thereby enhancing the charge extraction and transport of the SnO_(2)***,the strong interaction with uncoordinated Pb ions can modulate the crystal growth and crystallographic orientation of perovskite film and passivate buried *** employing MESK interface bridging,PSCs fabricated via scalable doctor blading in ambient condition achieve a power conversion efficiency(PCE)of 24.67%,which is one of the highest PCEs for doctor-bladed PSCs,and PSC modules with an active area of 11.35 cm^(2)achieve a PCE of 19.45%.Furthermore,PSCs exhibit excellent long-term stability,and the unpackaged target device with a storage of 1680 h in ambient condition(25℃and humidity of 30%relative humidity(RH))can maintain more than 90%of the initial *** research provides a strategy for constructing a high-performance interface bridge between SnO_(2)ETL and perovskite film,and achieving efficient and stable large-area PSCs and modules fabricated via scalable doctor-blading process in ambient condition.

关键词： perovskite solar cells doctor blading buried interface defect passivation orientation regulation

Crystallization and Orientation Modulation Enable Highly Efficient Doctor-Bladed Perovskite Solar Cells

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Nano-Micro Letters 2023年第10期15卷 40-52页

作者： jianhui chang Erming Feng Hengyue Li Yang Ding Caoyu Long Yuanji Gao Yingguo Yang Chenyi Yi Zijian Zheng Junliang Yang Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083HunanPeople’s Republic of China Shanghai Synchrotron Radiation Facility(SSRF) Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204People’s Republic of China Department of Electrical Engineering Tsinghua UniversityBeijing 100084People’s Republic of China Department of Applied Biology and Chemical Technology Faculty of ScienceThe Hong Kong Polytechnic UniversityHong Kong 999077People’s Republic of China

With the rapid rise in perovskite solar cells(PSCs)performance,it is imperative to develop scalable fabrication techniques to accelerate potential ***,the power conversion efficiencies(PCEs)of PSCs fabricated via scalable two-step sequential deposition lag far behind the state-of-the-art spin-coated ***,the additive methylammonium chloride(MACl)is introduced to modulate the crystallization and orientation of a two-step sequential doctorbladed perovskite film in ambient *** can significantly improve perovskite film quality and increase grain size and crystallinity,thus decreasing trap density and suppressing nonradiative ***,MACl also promotes the preferred face-up orientation of the(100)plane of perovskite film,which is more conducive to the transport and collection of carriers,thereby significantly improving the fill *** a result,a champion PCE of 23.14%and excellent longterm stability are achieved for PSCs based on the structure of ITO/SnO_(2)/FA_(1-x)MA_xPb(I_(1-y)Br_y)_3/Spiro-OMeTAD/*** superior PCEs of 21.20%and 17.54%are achieved for 1.03 cm~2 PSC and 10.93 cm~2 mini-module,*** results represent substantial progress in large-scale two-step sequential deposition of high-performance PSCs for practical applications.

关键词： Crystallization regulation Orientation modulation Perovskite solar cells Doctor-blading Ambient condition

Simplified Compact Perovskite Solar Cells with Efficiency of 19.6% via Interface Engineering

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Energy & Environmental Materials 2020年第1期3卷 5-11页

作者： Dedi Li changwen Liu Shi Chen Weiguang Kong Haichao Zhang Deng Wang Yan Li jianhui chang Chun Cheng Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Shenzhen Engineering Research and Development Center for Flexible Solar Cells Southern University of Science and TechnologyShenzhen 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen Guangdong Province 518055China Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and TechnologyShenzhen 518055China

For the commercialization of perovskite solar cells(PSCs), it is more appealing to develop high-performance simplified PSCs where perovskite films are just sandwiched between the back and front electrodes, in order to simplify the fabrication process and to reduce the cost. However, to date, this kind of devices shows rather low performance, and there are few researches on this ***, we report on a kind of compact PSCs(CPSCs) that are free of independent charge transport layers(CTLs). The devices are realized by the use of organic monolayer-modified effective electrodes, along with the use of [6,6]-phenyl-C61-butyric acid methyl ester(PCBM)-assisted anti-solvent technique to obtain ultra-thin(~10 nm) PCBM-embedded perovskite films. Compared to control devices, CPSCs achieve a promising champion power conversion efficiency of 19.6% with largely reduced hysteresis. Moreover, the unencapsulated CPSC shows good stability under ambient atmosphere, with only 10% efficiency loss after 60 days’ storage. This work indicates that, by delicate design, CPSCs with smaller materials consumption in device architecture can perform competitively as conventional PSCs. Further reduction in the actual usage of costly CTL materials can be expected upon our CPSCs by developing more facile and economic methods to prepare ultra-thin CTLs.

关键词： charge transport layers compact perovskite solar cells interface engineering monolayer-modified electrodes ultra-thin

Sparkling hot spots in perovskite solar cells under reverse bias

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ChemPhysMater 2022年第1期1卷 71-76页

作者： Weiqi Li Keqing Huang jianhui chang Caiqi Hu Caoyu Long Hai Zhang Xavier Maldague Biao Liu Jianqiao Meng Yuxia Duan Junliang Yang School of Physics and Electronics Central South UniversityChangsha 410083China Computer Vision and Systems Laboratory Department of Electrical and Computer EngineeringUniversitéLaval1065av.de la MédecineQuébec(QC)Canada G1V 0A6

Perovskite solar cells(PSCs)are attracting much attention and are on the way to ***,some modules are subject to reverse bias in actual fields,so it is meaningful to investigate the reverse-bias behav-ior of ***,an in-situ temperature and current measurement technique was ***,some hot spots were observed and then quickly disappeared in the reverse biased PSCs,along with the simultaneous increase in the current and local ***,the potential mechanism has been revealed and *** abnormal bulge in the perovskite film was found at the hot ***,the appearance and disappearance of hot spots were perfectly explained by band bending and tunneling current caused by ion ***-tionally,statistical analysis suggested that sparkling hot spots were related to reverse voltage and efficiencies of *** research provides a great significance for the study of PSCs under reverse bias.

关键词： Perovskite solar cells Reverse bias Hot spots Stability

知识经济及其经济、信息、知识、资源特征分析

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图书情报工作 2000年第10期44卷 16-18页

作者：吕建辉长安大学雁塔校区图书馆信息室西安710054

从经济学、信息学、知识学、资源学角度对知识经济的基本特征进行分析,得出了知识经济的经济特征是“零”运转和全球性、持续性发展,信息特征是产业化和网络化,知识特征是创新化,资源特征是无形化。

关键词：知识经济经济特征信息特征知识特征资源特征

论图书情报系列专业技术职务资格量化评审体系

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图书情报工作 2002年第5期46卷 100-104页

作者：吕建辉长安大学雁塔校区图书馆西安710054

结合图书情报工作的特点,建立图书情报系列专业技术职务资格量化评审体系。

关键词：图书情报工作专业技术职务资格评审体系指标量化工作考核工作业绩

26.75 cm^(2) organic solar modules demonstrate a certified efficiency of 14.34%

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Journal of Semiconductors 2022年第10期43卷 7-27页

作者： Erming Feng Yunfei Han jianhui chang Hengyue Li Keqing Huang Lixiu Zhang Qun Luo Jidong Zhang changqi Ma Yingping Zou Liming Ding Junliang Yang Hunan Key Laboratory for Super-Microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China College of Engineering and Computer Science Australian National UniversityCanberra 2600Australia Center for Excellence in Nanoscience Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

Organic solar cells(OSCs)have been developed rapidly in past years,due to the fast evolution of wide-bandgap copoly-mer donors and low-bandgap non-fullerene acceptors[1−9].At present,the highest power conversion efficiencies(PCEs)for single-junction OSCs and tandem OSCs exceed 19%and 20%,respectively[10,11].These OSCs are typically fabricated by us-ing low-boiling-point solvent chloroform(CF)with an effect-ive area<0.1 cm^(2).The doctor-blading deposition is the most advantageous technique to fabricate OSCs with low-boiling-point solvent for upscaling lab cells to industrial-scale mod-ules[12],exhibiting simple operation,low cost,and high materi-al utilization[13−15].Herein,a typical OSC material system PM6:Y6(Fig.1(a))was used to fabricate OSCs modules via doc-tor-blading deposition in ambient condition,and the influ-ence of the ambient temperature and substrate temperature on the film quality was investigated.

关键词： ambient modules boiling

The increased stability of p16 mRNA in murine hematopoie tic stem cell after irradiation was mediated by p38 signal pathway

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The increased stability of p16 mRNA in murine hematopoie tic...

克霉唑联合氟康唑治疗复发性念珠菌性阴道炎的临床效果观察

第七届中国核学会“三核”论坛中国放射医学教育五十年暨中国毒理学会放射毒理委员会第八次全国会议

作者： Wang Xiaochun Zhai Zhibin Wu Hongying Du Liqing chang jianhui Wang Yueying Lu Lu Zhang Heng Zhou Daohong Meng Aimin Institute of Radiation Medicine Peking Union Medical College and Chinese Academy of Medical ScienceTianjin Key Laboratory of Molecular Nuclear Medicine Divisioin of Radiation Health Department of Pharmaceutical Sciences and Winthrop P.Rockefeller Cancer InstituteUniversity of Arkansas for Medical Scienecs Department of Pathology Medical Univeersity of South Carolina

Purpose:The present study was undertaken to examine the expression level of p16 mRNA in mouse hematopoietic stem cell after irradiation and to explore its molecular *** and Materials: Bone marrow mononuclear cells was isolation from 30 C57 male mice and then lineage negative hematopoietic(Lin -) cells was sorted using magnetic *** hematopoietic stem cell was divided into 5 groups,including control group,radiation group,p38 inhibition group(SB203580(5 umol) was added into culture medium 30 minutes before radiation) and transcription inhibition *** the control group,the other four groups were exposed toγray at a dose of 4 *** expression status of p16 mRNA was examined using Real-time PCR after 5 *** the transcription inhibition group,actinomycin D(5ug/ml) was added into culture medium 3 hours before RNA extraction. Results:Comparing with the control group,the expression of p16 in radiation group was significant increased, showing radiation can induce the expression of p16 in hematopoietic stem *** contrast,the p16 expression level in SB203580 group was not increased after *** data suggested that the increased p16 expression in hematopoietic stem cell after irradiation was mediated by p38 signal *** with control group,the p16 expression level in transcription inhibition group was still increased,suggesting the stability of p16 mRNA was increased. Conclusion:These data showed that the increased expression of p16 in mouse hematopoietic stem cell was mediated by p38 signal ***,this kind of increasing was partly due to the increased stability of p16 mRNA.

关键词： p16 mRNA stability p38 HSC

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基层医学论坛 2017年第19期21卷 2462-2464页

作者：杨珍常建慧郫县中西医结合医院四川郫县611731

目的探讨克霉唑联合氟康唑治疗复发性念珠菌性阴道炎的临床效果。方法将104例复发性念珠菌性阴道炎患者分为观察组(52例,给予克霉唑+氟康唑)和对照组(52例,克霉唑),观察2组疗效以及复发率。结果观察组总有效率98.1%,治愈患者复发率4.0%... 详细信息

目的探讨克霉唑联合氟康唑治疗复发性念珠菌性阴道炎的临床效果。方法将104例复发性念珠菌性阴道炎患者分为观察组(52例,给予克霉唑+氟康唑)和对照组(52例,克霉唑),观察2组疗效以及复发率。结果观察组总有效率98.1%,治愈患者复发率4.0%,与对照组比较差异均有统计学意义(P<0.05)。结论克霉唑联合氟康唑治疗复发性念珠菌性阴道炎临床效果较好,复发率低,值得推广使用。

关键词：复发性念珠菌性阴道炎克霉唑氟康唑临床效果