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cs_(2.(Ag∶Cu)BiBr_(6)双钙钛矿太阳能电池

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发光学报 2024年第4期45卷 662-670页

作者：曹士双王宝宁李林哈尔滨师范大学物理与电子工程学院光电带隙材料教育部重点实验室黑龙江哈尔滨150000

采用水热法合成了Cu^(+)掺杂的cs_(2.AgBiBr_(6)双钙钛矿并基于其制备了太阳能电池。通过紫外-可见光吸收光谱、荧光发射光谱、X射线光电子能谱、单色光量子效率光谱及光电流-电压曲线等手段对其光电性能进行探究。研究发现,Cu^(+)掺杂... 详细信息

采用水热法合成了Cu^(+)掺杂的cs_(2.AgBiBr_(6)双钙钛矿并基于其制备了太阳能电池。通过紫外-可见光吸收光谱、荧光发射光谱、X射线光电子能谱、单色光量子效率光谱及光电流-电压曲线等手段对其光电性能进行探究。研究发现,Cu^(+)掺杂能够显著增强cs_(2.AgBiBr_(6)粉末样品的光学吸收,但对于薄膜样品几乎没有效果,这是由于Cu相双钙钛矿在溶于二甲基亚砜的过程中会发生分解。实验结果表明,当Cu^(+)掺杂量较低时,太阳能电池的光电转化效率显著提升,这是由于Cu^(+)掺杂对cs_(2.AgBiBr_(6)薄膜结晶过程的调控作用,微量Cu^(+)掺杂能够显著降低钙钛矿薄膜的缺陷态密度。最终,基于Cu^(+)掺杂的太阳能电池获得了最高1.93%的能量转化效率。

关键词： cs2.gBiBr6 Cu+掺杂太阳能电池钙钛矿

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纳米碳片负载Mott-Schottky型Co/Co_(9)S_(8)异质结的原位合成及电催化性能研究

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材料导报 2024年第8期38卷 44-50页

作者：方瑜李靖孔维超周雪徐林孙冬梅唐亚文南京师范大学化学与材料科学学院南京210023 江苏省新型动力电池重点实验室南京210023

以K_(3)[Co(CN)_(6)]为Co源,硫脲为S源,富含-OH和-NH_(2.的天然亲水性高分子壳聚糖为碳源,通过形成cs-K_(3)[Co(CN)_(6)]水凝胶将Co前驱体和S源均匀分布于C前驱体中。水凝胶形成的主要驱动力来自金属Co离子与壳聚糖中-NH_2.配位交联以... 详细信息

以K_(3)[Co(CN)_(6)]为Co源,硫脲为S源,富含-OH和-NH_(2.的天然亲水性高分子壳聚糖为碳源,通过形成cs-K_(3)[Co(CN)_(6)]水凝胶将Co前驱体和S源均匀分布于C前驱体中。水凝胶形成的主要驱动力来自金属Co离子与壳聚糖中-NH_2.配位交联以及Co离子之间通过-CN的桥接作用。得益于均匀分散的前驱体和后续热解处理初期形成的Co的催化作用,通过简单地调控Co与S的原子比,原位构建出均匀镶嵌有Co/Co_(9)S_(8)异质结的N,S共掺杂富含微孔的碳纳米片(Co/Co_(9)S_(8)@N,S-CNSs)。采用SEM、TEM、BET、XRD、Raman、XPS和电化学工作站等方法对所制备催化剂的形貌、组成和结构以及电催化性能进行了表征。结果表明,形成的Mott-Schottky型Co/Co_(9)S_(8)异质界面有效地调控了活性中心的电子结构和电荷传输特性;二维掺杂多孔碳纳米片的负载使活性位点更加均匀分散,同时提供了高速的电子和传质通道,也避免了活性位点在催化过程中的迁移聚集。两者的协同作用使合成的Co/Co_(9)S_(8)@N,S-CNSs复合催化剂具有了更优的催化性能,在10 mA·cm^(-2.的电流密度下,其催化碱性析氧反应/OER的过电位仅为304 mV,优于商业化的RuO_(2.催化剂。该研究为发展具有优异电催化性能的廉价过渡金属催化剂提供帮助。

关键词： Co/Co_(9)S_(8) Mott-Schottky N,S共掺杂碳纳米片过渡金属电催化剂

First-principles study on optic-electronic properties of doped formamidinium lead iodide perovskite

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Chinese phys.cs B 2019年第1期28卷 620-627页

作者： Xin-Feng Diao Yan-lin Tang Quan Xie school of Big Data and Information engineering Guizhou University school of phys.cs and {2. Sciences Guizhou normal College school of phys.cs Guizhou University

We have discussed the materials of solar cell based on hybrid organic–inorganic halide perovskites with formamidinium(NH_2.H = NH_2.+or FA) lead iodide. Firstly, we build the structure of formamidinium lead iodide(FAPbI_3) by using the material studio. By using the first-principles calculations, the energy band structure, density of states(DOS), and partial DOS(PDOS) of the hydrazine-iodide lead halide are obtained. Then, we theoretically analyze a design scheme for perovskite solar cell materials, published in [Science 354, 861(2.16)], with the photoelectric conversion efficiency that can reach 2..3%. Also, we use non-toxic elements to replace lead in FAPbI_3 without affecting its photoelectric conversion efficiency. Here in this work, we explore the energy band structure, lattice constant, light absorption efficiency, etc. After the Ca, Zn, Ge Sr, Sn, and Ta atoms replacing lead(Pb) and through comparing the spectral distributions of the solar spectrum, it can be found that FAGeI_3, FASnI_3, and FAZnI_3 have better absorbance characteristics in the solar spectrum range. If the band gap structure is taken into account, FAGeI_3 will become an ideal material to replace FAPbI_3, although its performance is slightly lower than that of FAPbI_3. The toxicity of Pb is taken into account, and the Ge element can be used as a substitute element for Pb. Furthermore, we explore one of the perovskite materials, i.e., FA0.75cs_(0.2.)Sn_(0.2.)Ge_(0.75)I_3 whose photovoltaic properties are close to those of FA_(0.75)cs_(0.2.)Sn_(0.5)Pb_(0.5)I_3, but the former does not contain toxic *** results pave the way for further investigating the applications of these materials in relevant technologies.

关键词： perovskite band structure optic-electronic properties solar cell

Molecule opacity study on low-lying states of cs

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Chinese phys.cs B 2022年第10期31卷 362-370页

作者： Rui Li Jiqun Sang Xiaohe lin Jianjun Li Guiying Liang Yong Wu Department of phys.cs College of ScienceQiqihar UniversityQiqihar 161006China National Key Laboratory of Computational phys.cs Institute of Applied Physics and Computational MathematicsBeijing 100088China Faculty of Foundation Space Engineering UniversityBeijing 101416China school of Data Science and Artificial Intelligence Jilin Engineering Normal UniversityChangchun 130052China HEDPS Center for Applied Physics and TechnologyPeking UniversityBeijing 100084China

cs molecule, which plays a key role in atmospheric and astrophysical circumstances, has drawn great attention for long time. Owing to its large state density, the detailed information of the {2. structure of cs is still lacking. In this work, the high-level MRCI+Q method is used to compute the potential energy curves, dipole moments and transition dipole moments of singlet and triplet states correlated with the lowest dissociation limit of cs, based on which high accurate vibration-rotation levels and spectroscopic constants of bound states are evaluated. The opacity of cs relevant to atmospheric circumstance is computed at a pressure of 100 atms for different temperatures. With the increase of temperature,band systems from different transitions mingle with each other, and band boundaries become blurred, which are originated from the increased population on vibrational excited states and {2. excited states at high temperature.

关键词： cs transition dipole moment opacity excited state

Genetic investigation of haemoglobinopathies in a large cohort of asymptomatic individuals reveals a higher carrier rate for b-thalassaemia in Sichuan Province (Southwestern china)

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Genes & Diseases 2021年第2期8卷 224-231页

作者： Xia Yu Min lin Chenggui Liu Zhiyong Liao Yongqiong Wei Rui Liu Jing Zhu Pediatric Research Institute Ministry of Education Key Laboratory of Child Development and DisordersNational Clinical Research Center for Child Health and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChongqing Key Laboratory of PediatricsChildren’s Hospital of Chongqing Medical UniversityChongqing400014PR China Chengdu Women’s and Children’s Central Hospital School of MedicineUniversity of Electronic Science and Technology of ChinaSichuan Provinnce611731PR China school of Food engineering and Biotechnology Hanshan Normal UniversityChaozhouGuangdong Province515063PR China

The incidence of haemoglobinopathy is high in china,especially south of the Yangtze ***,the exact status of haemoglobinopathy in Sichuan is *** carry out a detailed research of haemoglobinopathy in individuals living in Sichuan,13,2.8 subjects without clinical symptoms who were living in Sichuan Province,with an age distribution of 5e73 years,were included in this *** March {2.4 and July {2.7,these subjects received examinations at the Medical Lab of Chengdu Women’s&Children’s Central *** corpuscular volume(MCV)2.fL or mean corpuscular haemoglobin(MCH)2. pg was used to indicate haemoglobinopathy *** haemoglobin was screened by electrophoresis,and genes were sequenced to identify *** diagnosis of alpha-and beta-thalassaemia was carried out by using PCR and shunt *** were 638 suspected haemoglobinopathy carriers(4.80%,638/13,2.8).DNA sequencing identified 6 subjects with abnormal haemoglobin genotypes and 15 subjects with Hb *** frequency of heterozygosity for thalassaemia was 4.12.(1.48%for α-thalassaemia and 2.61%for β-thalassaemia)in Sichuan *** mutation spectrum of α-thalassaemia consisted of the five most common mutations:–^(SEA),-α^(3.7),-α^(4.2.,α^(cs),and α^(QS).Seven types of β-thalassaemia mutation were found in this study:CD41-42.-TTCT)was the most frequent(2..47%),followed by 17(A>T),2.(A>G),and IVS-Ⅱ-654(C>T).The main abnormal haemoglobin genotype(HbE)and thalassaemia genotype(–^(SEA),CD41-42.-TTCT))were consistent with those in other regions of china,but the carrier rate of β-thalassaemia in Sichuan was higher than that of α-thalassaemia.

关键词： Haemoglobinopathy Molecular epidemiology Sichuan Thalassaemia Population migration

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钒基笼目超导体

物理学报 2022年第11期71卷 366-371页

作者：奉熙林蒋坤胡江平中国科学院物理研究所北京100190 中国科学院大学物理科学学院北京100049 松山湖材料实验室东莞523808

钒基笼目超导体的发现为研究拓扑物态、超导以及几何阻挫等物理特性提供了全新平台.自发现钒基笼目超导体以来,国内很多研究组对其超导、电荷密度波、配对密度波、电子向列相以及时间反演对称性破缺多方面特性进行了研究,并取得了重要进... 详细信息

钒基笼目超导体的发现为研究拓扑物态、超导以及几何阻挫等物理特性提供了全新平台.自发现钒基笼目超导体以来,国内很多研究组对其超导、电荷密度波、配对密度波、电子向列相以及时间反演对称性破缺多方面特性进行了研究,并取得了重要进展,引发了极大的关注.这些新进展展示了钒基笼目超导体有极其丰富的基本物理机制.本文简略讨论国内研究组取得的进展及其对理解钒基笼目超导体性质的意义,并介绍目前领域内值得关注的重要问题.

关键词：超导电荷密度波时间反演破缺电子向列相配对密度波

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基于六量子比特纠缠混态的三方量子态分享

中国科学:物理学、力学、天文学 2023年第11期53卷 165-174页

作者：张战军林诗凡袁好谢传梅叶表良浙江工商大学信息与电子工程学院(萨塞克斯人工智能学院) 杭州310018 皖西学院电气与光电工程学院六安237012 安徽大学物理与光电工程学院合肥230601 上饶师范学院量子信息研究中心上饶334001

量子网络中有三个节点,每个节点有一对全同量子比特,这六个量子比特最初处于一种量子纠缠纯态[Chen et *** Rev A,2.06,74:032.2.].本文考虑三个节点中的量子比特都发生了混淆,利用混淆后的量子态作为量子通道,提出了一个三方量子态分... 详细信息

量子网络中有三个节点,每个节点有一对全同量子比特,这六个量子比特最初处于一种量子纠缠纯态[Chen et *** Rev A,2.06,74:032.2.].本文考虑三个节点中的量子比特都发生了混淆,利用混淆后的量子态作为量子通道,提出了一个三方量子态分享协议.文中分析讨论了该协议的安全性、成功概率、分享者对称性和它们的深层物理以及协议的实验可行性.研究发现,该协议是安全的;任一分享者都可以1/2.率获取被分享量子态;根据当前实验技术协议切实可行.

关键词：量子纠缠混态量子态分享三方协议