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Stability and optoelectronic property of lead-free halide double perovskite Cs_(2)B′BiI_(6)(B′=Li,Na and K)

Chinese Physics B 2021年第10期30卷 630-637页

作者： Yunhui Liu Wei Wang Feng Xiao liangbin xiong Xing Ming College of Science Guilin University of TechnologyGuilin 541004China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Although lead-based perovskite solar cells have achieved more than 25%power conversion efficiency,the toxicity of lead and instability are still urgent problems faced in industrial ***-free halide double perovskite(DP)materials are promising candidates to resolve these *** on the density functional theory,we explore the geometric stability,thermodynamic stability,mechanical stability,electronic structures,and optical properties of theCs_(2)B 0BiI_(6)(B 0=Li,Na and K)DP *** analyzing the tolerance factor and octahedral factor,we find the geometric stabilities ofCs_(2)NaBiI_(6) andCs_(2)KBiI_(6) DPs are better thanCs_(2)LiBiI_(6).By calculating the total energy,formation energy and decomposition energy,we propose that the most favorable structure ofCs_(2)B 0BiI_(6) is the orthorhombic phase,andCs_(2)LiBiI_(6) is less stable relative to the other two counterparts from an energetic *** stability evaluations reveal that the orthorhombicCs_(2)LiBiI_(6) material is less stable relative to the isostructuralCs_(2)NaBiI_(6) andCs_(2)KBiI_(6) *** mechanical property calculations indicate that theCs_(2)B 0BiI_(6) DPs possess good ductility,which can be used as flexible *** structures and optical property calculations show that the orthorhombicCs_(2)B 0BiI_(6) DPs have suitable band gap values,weaker exciton binding energies,and excellent optical absorption performance in the visible-light *** on the above comprehensive assessments,we can conclude that the orthorhombic Cs_(2)NaBiI_(6) and Cs_(2)KBiI_(6) DPs with good stability are promising candidates for solar cell applications.

关键词： lead-free halide double perovskite solar cells stability optoelectronic property

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Manipulating the morphology of CdS/Sb_(2)S_(3) heterojunction using a Mg-doped tin oxide buffer layer for highly efficient solar cells

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Journal of Energy Chemistry 2022年第3期31卷 374-381,I0010页

作者： Jiashuai Li liangbin xiong Xuzhi Hu Jiwei Liang Cong Chen Feihong Ye Jing Li Yongjie Liu Wenlong Shao Ti Wanga Chen Tao Guojia Fang Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665GuangdongChina Shenzhen Institute Wuhan UniversityShenzhen 518055GuangdongChina

Antimony sulfide(Sb_(2)S_(3))is an appealing semiconductor as light absorber for solar cells due to its high absorption coefficient,appropriate band gap(~1.7 e V)and abundance of constituent ***,power conversion efficiency(PCE)of Sb_(2)S_(3)-based solar cells still lags much behind the theoretically predicted due to the imperfect energy level alignment at the charge transporting layer/Sb_(2)S_(3)interfaces and hence severe charge ***,we insert a high-temperature sintered magnesium(Mg)-doped tin oxide(SnO_(2))layer between cadmium sulfide(Cd S)and fuorine doped tin oxide to form a cascaded energy level alignment and thus mitigate interfacial charge ***,the inserted Mg-doped Sn O_(2)buffer layer facilitates the growth of the neibouring Cd S film with orientation followed by Sb_(2)S_(3)film with larger grains and fewer ***,the resultant Sb_(2)S_(3)solar cells with Mg-doped SnO_(2)deliver a champion PCE of 6.31%,22.8%higher than those without a buffer *** work demonstrates that deliberate absorber growth as well as efficient hole blocking upon an appropriate buffer layer is viable in obtaining solution-processed Sb_(2)S_(3)solar cells with high performance.

关键词： Morphology Sb_(2)S_(3)solar cells Mg-doped tin oxide Orientation

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Portable fiber-optic laser-induced breakdown spectroscopy system for the quantitative analysis of minor elements in steel

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Plasma Science and Technology 2019年第3期21卷 46-51页

作者： Qingdong ZENG Fan DENG Zhiheng ZHU Yun TANG Boyun WANG Yongjun XIAO liangbin xiong Huaqing YU Lianbo GUO Xiangyou LI School of Physics and Electronic-information Engineering Hubei Engineering University Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science andTechnology

In this paper, we developed a portable laser-induced breakdown spectroscopy(LIBS) using an optical fiber to deliver laser energy and used it to quantitatively analyze minor elements in *** R^2 factors of calibration curves of elements Mn, Ti, V, and Cr in pig iron were 0.9965,0.9983, 0.9963, and 0.991, respectively, and their root mean square errors of cross-validation were 0.0501, 0.0054, 0.0205, and 0.0245 wt%, respectively. Six test samples were used for the validation of the performance of the calibration curves established by the portable LIBS. The average relative errors of elements Mn, Ti, V, and Cr were 2.5%, 11.7%, 13.0%, and 5.6%,respectively. These results were comparable with most results reported in traditional LIBS in steel or other matrices. However, the portable LIBS is flexible, compact, and robust, providing a promising prospect in industrial application.

关键词： laser-induced breakdown spectroscopy optical fiber quantitative analyses minor element

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Effects of annealing temperature of tin oxide electron selective layers on the performance of perovskite solar cells

Effects of annealing temperature of tin oxide electron selec...

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第三届新型太阳能电池学术研讨会

作者： Xiaolu Zheng Weijun Ke Qin Liu Guang Yang Pingli Qin liangbin xiong Guojia Fang Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education School of Physics and TechnologyWuhan University

Efficient lead halide perovskite solar cells have been realized using SnO as electron selective layers(ESLs).Here,we report on the effects of the annealing temperature of solution-processed SnO ESLs on the performance of perovskite solar *** find that the cells using low-temperature annealed SnO(LTSnO) ESLs outperform the cells using high-temperature annealed SnO(HT-SnO) ESLs,exhibiting higher open circuit voltages and fill ***,electrical,optical,and electrochemical characterizations reveal the origin of the performance differences:LT-SnO produces better film coverage,wider band gap,and lower electron density than that of *** confluence of these properties results in more effective transportation of electrons and blocking of holes,leading to lower interface ***,LT-SnO ESLs are preferred for manufacturing perovskite solar cells on flexible substrates.

关键词： perovskite solar cells electron selective layer tin oxide

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Improved Performance of Perovskite Solar Cells with SnO2 Electron Transport Layer

Improved Performance of Perovskite Solar Cells with SnO2 Ele...

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第三届新型太阳能电池学术研讨会

作者： Guojia Fang Weijun Ke Guang Yang liangbin xiong Qin Liu Xiaolu Zheng Junjie Ma Minchao Qin Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education School of Physics and TechnologyWuhan University

We report perovskite solar cells with nano-SnO as electron-transport layers(ETLs),which outperform cells using TiO ETLs in several ways:higher open-circuit voltage(Voc),power conversion efficiencie,short-circuit current and fill *** properties improvements are attributed to the better properties of SnO as compared to TiO,such as better optical transmission properties,wider band gap,better hole-blocking effect and higher electron *** demonstrate that low-temperature solution processed nanocrystalline SnO can be an excellent alternative ETL material for efficient perovskite solar ***,we demonstrate that SnO and fullerenes can work cooperatively to further boost the performance of perovskite solar *** SnO layer blocks holes effectively;whereas,the ultra-thin fullerenes promote electron transfer and passivate trapsand defects at the SnO/perovskite *** on SnO electron transport layer,we also demonstrate a one-step solution process for perovskite film deposition and demonstrate that adding a small amount of lead thiocyanate(Pb(SCN)2) in the perovskite precursor can significantly increase the grain size and crystalline quality of perovskite thin *** conventional reverse and forward voltage scanning,PCEs of 19.45% and 18.53% were obtained,*** simple low-temperature process is compatible with the future roll-to-roll manufacturing of low-cost perovskite solar cells on flexible substrates.

关键词：钙钛矿电池 SnO2 电子传输层低温

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A facile room temperature solution synthesis of SnO2 quantum dots for perovskite solar cells

A facile room temperature solution synthesis of SnO2 quantum...

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第六届新型太阳能电池材料科学与技术学术研讨会

作者： Hongri Liu Zhiliang Chen Haibing Wang Feihong Ye Junjie Ma Xiaolu Zheng Pengbin Gui liangbin xiong Jian Wen Guojia Fang College of Physics and Electronic Science Hubei Normal University

The electron transport layer(ETL) is a critical component in planar single junction or tandem perovskite solar cells(PSCs), dominating the separation and electron extraction of charge carriers. Herein, we introduce a facile route to synthesize a SnO quantum dot(QD) colloidal solution at room temperature using an alcohol-based solvent with the additive of deionized-water. A superior homogeneous ETL is obtained by spin coating of the QD colloidal solution with post-deposition annealing. Compared to the ETL prepared with the SnCl.22 HO anhydrous alcohol solution, the champion power conversion efficiency of PSCs deposited on the SnO QD based ETL is raised to 20.1% from 16.5%. The better performance is attributed to the excellent optical and electronic properties of the SnO QD based ETL. Experimental analyses reveal that the SnO QD based ETL enhances electron extraction and suppresses charge recombination, leading to improvement of solar cell performance. The appropriate concentration of the SnO QD based solution is explored and the appropriate ratio of anhydrous alcohol to deionized water of the SnO colloidal solution is obtained. Our results show the great potential of low temperature synthesized SnO QD films for application as ETLs or interconnecting buffer layers for future highly efficient and reproducible low-temperature processed tandem PSCs.

关键词： perovskite SnO2 quantum dots solar cell

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二氧化钛薄膜的溶胶-凝胶法制备及表征

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重庆理工大学学报（自然科学） 2018年第11期32卷 93-99页

作者：肖华清王坤平邱俊杰肖永军何武光曾庆栋王波云熊良斌湖北工程学院物理与电子信息工程学院湖北孝感432100

采用溶胶-凝胶法,以钛酸四丁酯为原料,通过加入不同量的硝酸,制备出了不同厚度的TiO_2薄膜。考察了不同硝酸量条件下制备的TiO_2溶胶的颜色、胶凝时间、微形貌及薄膜外观情况;研究了提拉速度对TiO_2薄膜厚度的影响;测试了不同厚度TiO_2... 详细信息

采用溶胶-凝胶法,以钛酸四丁酯为原料,通过加入不同量的硝酸,制备出了不同厚度的TiO_2薄膜。考察了不同硝酸量条件下制备的TiO_2溶胶的颜色、胶凝时间、微形貌及薄膜外观情况;研究了提拉速度对TiO_2薄膜厚度的影响;测试了不同厚度TiO_2薄膜的透射率。当加入硝酸的量在0. 03~0. 12 mL时,制备的TiO_2溶胶透明均一,薄膜光滑致密,且制备的TiO_2薄膜的透射率较好,涂膜一次的TiO_2薄膜透射率达97%。

关键词：二氧化钛薄膜溶胶-凝胶过程透射率

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治疗药物监测药师的培养与教育浅谈

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继续医学教育 2021年第11期35卷 75-78页

作者：孟祥国周淑琴熊亮斌徐一新汪硕闻上海健康医学院药学院上海201318 上海交通大学附属第一人民医院临床药学科上海200080

治疗药物监测(therapeutic drug monitoring,TDM)作为一门交叉性较强的应用科学,是各大三级医院开展精准医疗诊治的一项重要内容。鉴于治疗药物监测的特殊性和中国药学教育体系的现状,培养出能够胜任治疗药物监测工作的医院药师显得尤... 详细信息

治疗药物监测(therapeutic drug monitoring,TDM)作为一门交叉性较强的应用科学,是各大三级医院开展精准医疗诊治的一项重要内容。鉴于治疗药物监测的特殊性和中国药学教育体系的现状,培养出能够胜任治疗药物监测工作的医院药师显得尤为重要。文章将结合医院从事治疗药物监测工作的实际需求出发,从目前医疗机构培养治疗药物监测药师的迫切性,培养治疗药物监测的必备条件以及治疗药物监测药师的培养教育等方面出发,探讨培养治疗药物监测药师所需掌握的知识、能力和技能目标等问题,从而为医疗机构培养优秀的药物监测药师提供借鉴。

关键词：治疗药物监测药师人才培养继续教育药代动力学血药浓度

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甾体化合物绿色生物制造:从生物转化到微生物从头合成

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合成生物学 2021年第6期2卷 942-963页

作者：熊亮斌宋璐赵云秋刘坤刘勇军王风清魏东芝华东理工大学鲁华生物技术研究所生物反应器国家重点实验室上海200237 上海健康医学院协同科研中心上海201318

甾体化合物(简称甾体)分布广泛、功能卓越,在机体生长、物种繁育以及代谢调控等方面,发挥着难以取代的生理功能。因此,天然甾体及其衍生物被广泛用于生殖健康、内分泌调控等领域,是器官移植、重症感染等许多危重疾病的“刚需药”和“救... 详细信息

甾体化合物(简称甾体)分布广泛、功能卓越,在机体生长、物种繁育以及代谢调控等方面,发挥着难以取代的生理功能。因此,天然甾体及其衍生物被广泛用于生殖健康、内分泌调控等领域,是器官移植、重症感染等许多危重疾病的“刚需药”和“救命药”。甾体结构复杂、构型精巧,很难通过化学全合成来生产,当前主要以天然甾体皂素或甾醇为原料,通过化学与生物转化相结合的半合成法获得。然而,甾体药物的生产路线长、工艺复杂、收率低,涉及大量有毒有害试剂和重金属催化剂的使用,污水废渣排放量大、处理难度高,总体成本居高不下。为改变此局面,推动产业的转型升级,大力开发绿色生物制造技术是行业健康发展的大势所趋。当前,甾体制药工业正处于以生物催化转化取代化学合成的产业升级阶段,随着高效酶和细胞转化的成功应用,传统的甾体生产模式正发生着深刻变化。在此基础上,若能进一步利用合成生物学技术,创建可高效从头合成甾体的微生物细胞工厂,则将彻底改变甾体制药的工业模式,切实实现甾体药物的绿色制造。近年来,已有利用微生物从头合成部分甾体化合物的报道,然而由于甾体的天然合成机制异常复杂,如何实现细胞工厂的高效生产,仍是目前面临的主要挑战。本文从甾体药物生产方式的演变出发,系统综述了甾体生物催化转化和从头合成的最新进展,重点阐述了甾体生物催化转化酶的挖掘及改造、微生物代谢转化甾醇机制的解析及转化细胞工厂的开发、微生物从头合成甾体人工路线的创建三部分内容,以期对甾体药物绿色生物制造的现状和趋势做出合理的总结与展望。

关键词：甾体化合物绿色生物制造生物催化转化从头生物合成微生物细胞工厂

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不同颜色LED光照系统设计及其对麦苗生长的影响

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扬州大学学报（农业与生命科学版） 2019年第5期40卷 81-85,90页

作者：肖华清秦双亚曾庆栋朱志恒王坤平邱俊杰熊良斌王波云邹礼平李建华余华清湖北工程学院物理与电子信息工程学院湖北孝感432000 湖北工程学院生命科学技术学院湖北孝感432000

LED作为人工光源,能很好地降低能耗、调节光谱和强度并对植物进行近距离照射。利用光学软件DIALux,通过优化照度和效能值2个参数,发现8种不同的三维模型LED灯珠排布方式中同心圆形排布为最优方案。在此基础上,装配LED灯珠同心圆形排布... 详细信息

LED作为人工光源,能很好地降低能耗、调节光谱和强度并对植物进行近距离照射。利用光学软件DIALux,通过优化照度和效能值2个参数,发现8种不同的三维模型LED灯珠排布方式中同心圆形排布为最优方案。在此基础上,装配LED灯珠同心圆形排布的照明光源,研究特定功率下6种不同颜色的LED灯珠同心圆形排布照明光源对小麦生长的影响。结果表明:不同颜色的LED光照对小麦生长的作用明显不同,红色和橙色光照射环境下小麦茎秆生长较为迅速,而蓝色光照有助于麦苗的根系生长。

关键词：小麦 LED 光照系统麦苗生长

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