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| 1 | H2A.Z Represses Gene Expression by Modulating Promoter Nucleosome Structure and Enhancer Histone Modifications in Arabidopsis显示文摘 | Xiaozhuan Dai Youhuang Bai Lihua Zhao Xianying DOU Yanhui Liu Lulu Wang Yi Li Weimin Li Yanan Hui Xinyu Huang Zonghua Wang Yuan Qin | 2017 | Molecular Plant2017，10，10： | 14 |
| 2 | USP47-mediated deubiquitination and stabilization of YAP contributes to the progression of colorectal cancer显示文摘Dear Editor,The Hippo tumor suppressor pathway plays an important role in development and tumorigenesis.Yes-associated protein(YAP)is a major effector of the Hippo pathway regulating the expression of genes involved in cell proliferation,cell death,and cell differentiation(Pan,2010;Johnson and Haider,2014;Piccolo etal.,2014;Yu etal.,2015).In intestine,YAP is mainly expressed in leucine rich repeat containing G protein-coupled receptor 5(LGR5)marked stem cells,and is required for regeneration following tissue damage and the development of colon cancer in mice(Cai etal.,2010;Barry etal.,2013;Wang etal.,2017).Moreover,in colorectal cancer(CRC)specimens,elevated YAP expression and activity is frequently observed(Steinhardt et al.,2008).It has been shown that high YAP expression is associated with cancer metastasis,poor prognosis,resistance to chemotherapy,and greater possibility of relapse(Johnson and Haider,2014;Yu etal.,2015). | Beiqing Pan Yi Yang Jian Li Yu Wang Chuantao Fang Fa-Xing Yu Yanhui Xu | 2020 | Protein & Cell2020，11，2： | 4 |
| 3 | Fargeted elimination of mutant mitochondria DNA in MELAS-iPSCs by mitoTALENs显示文摘 | Yi Yang Han Wu Xiangjin Kang Yanhui Liang Ting Lan Tianjie Li Tao Tan Jiangyun Peng Quanjun Zhang Geng An Yali Liu Qian Yu Zhenglai Ma Ying Lian Boon Seng Soh Qingfeng Chen Ping Liu Yaoyong Chen Xiaofang Sun Rong Li Xiumei Zhen Yang Yu Xiaoping Li Yong Fan | 2018 | Protein & Cell2018，9，3： | 4 |
| 4 | Genome-wide comprehensive analysis of transcriptomes and small RNAs offers insights into the molecular mechanism of alkaline stress tolerance in a citrus rootstock显示文摘Alkaline stress has serious-negative effects on citrus production.Ziyang xiangcheng(Citrus junos Sieb.ex Tanaka)(Cj)is a rootstock that is tolerant to alkaline stress and iron deficiency.Trifoliate orange(Poncirus trifoliata(L.)Raf.)(Pt),the most widely used rootstock in China,is sensitive to alkaline stress.To investigate the molecular mechanism underlying the tolerance of Cj to alkaline stress,next-generation sequencing was employed to profile the root transcriptomes and small RNAs of Cj and Pt seedlings that were cultured in nutrient solutions along a three pH gradient.This two-level regulation data set provides a system-level view of molecular events with a precise resolution.The data suggest that the auxin pathway may play a central role in the inhibitory effect of alkaline stress on root growth and that the regulation of auxin homeostasis under alkaline stress is important for the adaptation of citrus to alkaline stress.Moreover,the jasmonate(JA)pathway exhibits the opposite response to alkaline stress in Cj and Pt and may contribute to the differences in the alkaline stress tolerance and iron acquisition between Cj and Pt.The dataset provides a wealth of genomic resources and new clues to further study the mechanisms underlying alkaline stress resistance in Cj. | Juxun Wu Junying Cao Mei Su Guizhi Feng Yanhui Xu Hualin Yi | 2019 | Horticulture Research2019，6，1： | 4 |
| 5 | Structural insights into a dual-specificity histone demethylase ceKDM7A from Caenorhabditis elegans显示文摘Histone 离氨酸 methylation 能被 JmjC 包含域的蛋白质在 sequence-state-specific 和 methylation-state-specific 举止移开。然而,底层特性怎么样,决定,酶怎么被调整,大部分是未知的。我们最近发现了那 ceKDM7A,一个哲学博士 -- 并且 JmjC 包含域的蛋白质,是为 H3K9me2 特定的 histone demethylase, H3K27me2,和 PHD 摸绑定到 H3K4me3 指南在 vivo 的 demethylation 活动。为了为酶的活动和 PHD 的功能提供结构的卓见进分子的机制,摸,我们与包含 H3K4me3, H3K9me2,和 H3K27me2 修正的各种各样的联合的单身者或二肽一起在 apo 形式并且在建筑群解决了酶的六水晶结构。结构显示 H3K9me2 和 H3K27me2 以一种类似的方式与 ceKDM7A 交往,并且肽绑定特性被特定的相互作用的一个网络决定。结构的几何测量也揭示了与 PHD 手指和 H3K9me2 界限联系到 JmjC 领域的那 H3K4me3 从二个分开的分子,建议 trans-histone 肽绑定机制。因此,我们的全身的结构的研究重要地由催化领域而且更多揭示底层识别不仅,为 H3K9me2 和 H3K27me2 的 ceDKM7A 的双特性的分子的机制。 | Ying Yang Lulu Hu Ping Wang Haifeng Hou Yan Lin Yi Liu Ze Li Rui Gong Xiang Feng Lu Zhou Wen Zhang Yuhui Dong Huirong Yang Hanqing Lin Yiqin Wang Charlie Degui Chen Yanhui Xu | 2010 | Cell Research2010，20，8： | 3 |
| 6 | A glucocorticoid amplifies IL-2-induced selective expansion of CD4^+CD25^+FOXP3^+ regulatory T cells in vivo and suppresses graft-versus-host disease after allogeneic lymphocyte transplantation显示文摘规章的 T (Treg ) 房间是不仅阻止 autoimmunity,而且控制大量 T 房间依赖者免疫者回答的 T 房间的 subpopulation。Glucocorticoid 处理(dexamethasone,或 Dex ) 被报导了放大在 Treg 房间的 vivo 扩大选择的 IL-2-mediated。我们同时在一个鼠科的 allogeneic 淋巴细胞移植模型予施主以 Dex 和 IL-2 在接枝扩展功能的镇压 CD4+CD25+FOXP3+ T 房间并且提起规章的 T 房间 / 受动器 T 房间(Treg/Teff ) 比率阻止 graft-versus-host 疾病(GVHD ) 。在有 Dex (5 mg/kg/day ) 和为 3 天的 IL-2 (300,000 IU/mouse/day ) 的施主的联合处理以后,接枝受到流动 cytometric 分析,并且移植 812 个星期从男 C57BL/6 老鼠被执行到女 BALB/c 老鼠。结果显示出 Dex 的那个短期的同时的政府, IL-2 显著地在鼠科的怒气扩展了功能的镇压 CD4+CD25+FOXP3+ T 房间。在这个鼠科的 allogeneic 移植模型,从有 Dex 和 IL-2 预告的处理的施主的接枝比为控制组为接受者导致了一更长的幸存时间(中部的幸存时间 > 60 白天对 12 白天, P = 0.0002 ) 。Treg/Teff 的比率也显著地增加了(0. | Yanhui Xie Min Wu Runhua Song Jiexian Ma Yi Shi Wenming Qin Youxin Jin | 2009 | Acta Biochimica et Biophysica Sinica2009，41，9： | 3 |
| 7 | Reduced middle cingulate gyrus volume in late-onset schizophrenia in a Chinese Han population: a voxel-based structural MRI study显示文摘Dear Editor:Numerous magnetic resonance imaging(MRI)studies have demonstrated that patients with early-onset schizophrenia(EOS)have widespread structural abnormalities in the cortical gray matter[1],suggesting that neurobiological processes play a central role in the structural abnormalities underlying the pathophysiology of schizophrenia[2].In addition,volumetric abnormalities have been used to identify individuals at risk of mental states | Hong Li Jinsong Tang Liping Chen Yanhui Liao Bing Zhou Ying He Zongchang Li Luxian Lv Yi Zeng Xiaogang Chen | 2015 | Neuroscience Bulletin2015，31，5： | 2 |
| 8 | Coordinated regulation of active and repressive histone methylations by a dual-specificity histone demethylase ceKDM7A from Caenorhabditis elegans显示文摘H3K9me2 和 H3K27me2 是与抄写压抑联系的重要 epigenetic 标记,当 H3K4me3 与抄写激活被联系时。活跃、压抑的 histone methylations 以一种互相独占的方式散布,这被显示出,但是内在的机制糟糕被理解。这里,我们识别了 ceKDM7A,一个哲学博士(植物 homeodomain )- 并且 JmjC 包含域的蛋白质,为 H3K9me2 和 H3K27me2 特定的 histone demethylase。我们进一步证明 ceKDM7A 的 PHD 领域在染色体宽的水平绑了 H3K4me3 和与 ceKDM7A co 局部性的 H3K4me3。到 H3K4me3 的 PHD 域绑定的混乱在 vivo 减少了 demethylase 活动,并且 ceKDM7A 的损失减少了它的联系目标基因的表达式。这些结果显示 ceKDM7A 被招募到倡导者到 demethylate H3K9me2 和 H3K27me2 并且通过 PHD 领域的绑定激活基因表示到 H3K4me3。因此,我们的学习识别双特性的 histone demethylase 并且提供新奇卓见进 histone methylation 的规定。 | Hanqing Lin Yiqin Wang Yanru Wang Feng Tian Pu Pu Yi Yu Hailei Mao Ying Yang Ping Wang Lulu Hu Yan Lin Yi Liu Yanhui Xu Charlie Degui Chen | 2010 | Cell Research2010，20，8： | 2 |
| 9 | Application of fluorescence in situ hybridization in the detection of bladder transitional-cell carcinoma: A multi-center clinical study based on Chinese population显示文摘Objective:To evaluate the diagnostic value of fluorescence in situ hybridization(FISH)in bladder cancer.Methods:We enrolled healthy volunteers and patients who were clinically suspected to have bladder cancer and conducted FISH tests and cytology examinations from August 2007 to December 2008.Receiver operating characteristic(ROC)curve analysis was performed and the area under curve(AUC)values were calculated for both the FISH and urine cytology tests.Results:A cohort of 988 healthy volunteers was enrolled to establish a reference range for the normal population.A total of 4807 patients with hematuria were prospectively,randomly enrolled for the simultaneous analysis of urine cytology,FISH testing,and a final diagnosis as determined by the pathologic findings of a biopsy or a surgically-excised specimen.Overall,the sensitivity of FISH in detecting transitional-cell carcinoma was 82.7%,while that of cytology was 33.4%(p<0.001).The sensitivity values of FISH for non-muscle invasive and muscle invasive bladder transitional-cell carcinoma were 81.7%and 89.6%,respectively(p=0.004).The sensitivity values of FISH for low and high grade bladder cancer were 82.6%and 90.1%,respectively(p=0.002).Conclusion:FISH is significantly more sensitive than voided urine cytology for detecting bladder cancer in patients evaluated for gross hematuria at all cancer grades and stages.Higher sensitivity using FISH was obtained in high grade and muscle invasive tumors. | Liqun Zhou Kaiwei Yang Xuesong Li Yi Ding Dawei Mu Hanzhong Li Yong Yan Jinyi Li Dongwen Wang Wei Li Yulong Cong Jiangping Gao Kewei Ma Yajun Xiao Sheng Zhang Hongyi Jiang Weilie Hu Qiang Wei Xunbo Jin Zhichen Guan Qingyong Liu Danfeng Xu Xin Gao Yongguang Jiang Weimin Gan Guang Sun Qing Wang Yanhui Liu Jianquan Hou Liping Xie Xishuang Song Fengshuo Jin Jiafu Feng Ming Cai Zhaozhao Liang Jie Zhang Dingwei Ye Lin Qi Lulin Ma Jianzhong Shou Yuping Dai Jianyong Shao Ye Tian Shizhe Hong Tao Xu Chuize Kong Zefeng Kang Yuexin Liu Xun Qu Benkang Shi Shaobin Zheng Yi Lin Shujie Xia Dong Wei Jianbo Wu Weiling Fu Zhiping Wang Jianbo Liang | 2019 | Asian Journal of Urology2019，6，1： | 2 |
| 10 | Molecular mechanism for the substrate recognition of USP7显示文摘 | Jingdong Cheng (1) (2) Ze Li (1) (2) Rui Gong (1) Jian Fang (1) Yi Yang (1) Chang Sun (1) Huirong Yang (1) Yanhui Xu (1) (2) (3) | 2015 | Protein & Cell2015，6，11： | 1 |
| 11 | Surface and optical properties of silicon nitride deposited by inductively coupled plasma-chemical vapor deposition显示文摘The surface and optical properties of silicon nitride samples with different compositions were investigated. The samples were deposited on In P by inductively coupled plasma chemical vapor deposition using different NH_3 flow rates. Atomic force microscopy measurements show that the surface roughness is increased for the samples with both low and high NH_3 flow rates. By optimization, when the NH_3 flow rate is 6 sccm, a smooth surface with RMS roughness of 0.74 nm over a 5 × 5 μm^2 area has been achieved. X-ray photoelectron spectroscopy measurements reveal the Si/N ratio of the samples as a function of NH_3 flow rate. It is found that amorphous silicon is dominant in the samples with low NH_3 flow rates, which is also proved in Raman measurements. The bonding energies of the Si and N atoms have been extracted and analyzed. Results show that the bonding states of Si atoms transfer from Si^0 to Si^(+4) as the NH_3 flow rate increases. | Yi Zhu Xingyou Chen Yingjie Ma Yonggang Zhang Ben Du Yanhui Shi Yi Gu | 2018 | Journal of Semiconductors2018，39，8： | 1 |
| 12 | The Effect of Nitrogen Deposition on Soil Microorganisms in the Woodland-Grassland Border of Tibet显示文摘Nitrogen deposition was simulated from July 2014 to August 2015 in the grassland, woodland, and woodland-grassland border in Zhuqudeng Village, Bujiu Township, Linzhi County,(CK, 0 kg·hm^2·a^(-1); LN, 25 kg·hm^2·a^(-1), MN, 50 kg·hm^2·a^(-1); HN, 150 kg·hm^2·a^(-1)). NH_4NO_3 was used as nitrogen source to analyze the number of microorganisms in soil layers of 0–20 cm and 20–40 cm and explore the effect of different degrees of nitrogen deposition on soil microorganisms in grassland, woodland, and woodlandgrassland border. The results showed that: the number of bacteria in the grassland increased significantly under the treatment of LN, and the number of bacteria in the woodland-grassland border and woodland had a rising response under the influence of nitrogen deposition; the number of actinomycetes in the grassland increased in MN and HN treatment, and significantly increased in the border and woodland under LN treatment; the number of molds decreased sharply in the grassland, woodland, and woodland-grassland border. | YE Yanhui LIU Yunlong GAO Yi DA Buqiong Han Yanying | 2018 | Journal of Landscape Research2018，10，2： | 1 |
| 13 | Short-term Effects of Nitrogen Deposition on Soil Physical and Chemical Properties of Tibetan Forest-Grassland Landscape Boundary显示文摘[Objective] The paper was to study the effects of nitrogen deposition on soil nutrients and soil dissolved organic carbon in forest-grass-land landscape in Linzhi, Tibet, and to provide scientific basis and basic data for understanding and assessing the effect of atmospheric nitrogen de-position on soil nutrients and soil dissolved organic carbon. [Method] From July 2014 to August 2015, in situ nitrogen deposition(CK 0 kg·hm^2/a, LN25 kg·hm^2/a, MN 50 kg·hm^2/a, HN 150 kg·hm^2/a) was simulated in the forest-grassland boundary of Zhuqudeng village, Bujiu Township, Linzhi County, Tibet. The soil samples were collected for analyzing nutrient and dissolved contents in the soil layer of 0-20 and 20-40 cm. The effects of different nitrogen deposition levels on soil nutrients and dissolved organic carbon(DOC) were studied. [Result] Nitrogen deposition had significant impacts on soil organic matter, total N, total P, total K, available N, available P, available K, exchangeable Ca, exchangeable Mg, p H, and DOC( P<0.05).(2) With the deepening of nitrogen deposition from CK, LN, MN to HN in the 0-20 cm boundary soil, the contents of organic matter, total N,total P, available P, exchangeable Ca, exchangeable Mg and DOC kept decreasing, and the content of total K and available N increased continuous-ly. The p H increased in LN treatment and decreased in HN treatment, while the available K content was decreased in LN and HN treatment, but increased in MN treatment.(3) The contents of organic matter, total N, total P, available N, available P, exchangeable Ca, exchangeable Mg and DOC all decreased at the soil layer of 20-40 cm under the same nitrogen deposition. The p H increased in LN treatment, but decreased in HN treat-ment; the content of total K decreased in LN treatment and increased in MN and HN treatments; the content of available K decreased in LN and HN treatments, but increased in MN treatment.(4) With the deepening of boundary soil layer(0-20 to 20-40 cm), the organic matter, total N, total P, available P, available K, exchangeable Ca, exchangeable Mg, DOC showed the same response to simulated nitrogen deposition, while the avail-able N and total K responded differently. [Conclusion] Different levels of N deposition had certain impact on soil nutrient, and the variation of soil nutrients was not the same at different levels. | Ye Yanhui Gao Yi Liu Yunlong Han Yanying Ye Hong Duan Yongbo | 2018 | Animal Husbandry and Feed Science2018，10，4： | 1 |
| 14 | A comparative study on catalyst deactivation of nickel and cobalt incorporated MCM-41 catalysts modified by platinum in methane reforming with carbon dioxide显示文摘 | Dapeng Liu Wei Ni Evelyn Cheo Yi Wen Yvonne Lim Armando Borgna Raymond Lau Yanhui Yang | 2010 | Catalysis Today2010，，3： | 1 |
| 15 | Global trends and regional differences in non-transport unintentional injuries mortality among children and adolescents, 1990 to 2019: results from the Global Burden of Disease 2019 study显示文摘Background::Non-transport unintentional injuries(NTUIs)are major public concerns,especially among children and adolescents in low-and middle-income countries.With environmental and cognitive changes,a recent systematic description of global trends and regional differences concerning NTUIs is urgently needed for the global agenda of relevant policy-making and intervention target findings.Methods::We used mortality,population,and socio-demographic-index(SDI)data from Global Burden of Disease 2019 to analyze the trends of NTUIs mortality.We applied the slope index of inequality(SII)and relative index of inequality(RII)to measure the absolute and relative inequality between countries and territories.The concentration curve and concentration index(CI)were also used to measure the inequality.We conducted a sensitivity analysis to make our findings credible.Results::In 2019,there were 205,000 deaths due to NTUIs among children and adolescents aged 5 to 24 years,which decreased from 375,000 in 1990.In 2019,the age-standardized mortality rate(ASMR)was 8.13 per 100,000,ranging from the lowest in the Netherlands(0.90 per 100,000)to the highest in the Solomon Islands(29.34 per 100,000).The low-middle SDI group had the highest ASMR of NTUIs,while the low SDI group had the slowest decrease.After excluding the death caused by'exposure to forces of nature'and'other unintentional injuries',drowning accounted for the most deaths in almost every SDI group,gender,and age group,but the major causes of death varied in different subgroups.For example,animal contact was a major cause in low and low-middle SDI groups but less in high SDI groups,while high and high-middle SDI groups had a higher proportion of deaths for foreign body and poisonings.The SII showed a declining trend,but the RII and CI did not,which might indicate that inequality was persistent.Similar results were found in the sensitivity analysis.Conclusions::Despite the declining trend of the mortality rate and the narrowing gap between countries,there were still a large number of children and adolescents dying from NTUIs,and those experiencing social-economic disadvantages remained at high mortality.Embedding the prevention of NTUIs into sustainable development goals might contribute to the progress of reducing death and inequalities,which ensures that no one is left behind. | Yunfei Liu Yanhui Dong Xiaojin Yan Ning Ma Jiajia Dang Jingshu Zhang Panliang Zhong Luo Li Zhiyong Zou Yi Song Jun Ma | 2022 | Chinese Medical Journal2022，135，17： | 1 |
| 16 | SF_(6)catalytic degradation in aγ-Al_(2)O_(3)packed bed plasma system:A combined experimental and theoretical study显示文摘Effective abatement of the greenhouse gas sulphur hexafluoride(SF_(6))waste is of great importance for the environment protection.This work investigates the size effect and the surface properties ofγ-Al_(2)O_(3)pellets on SF_(6)degradation in a packed bed dielectric barrier discharge(PB-DBD)system.Experimental results show that decreasing the packing size improves the filamentary discharges and promotes the ignition and the maintenance of plasma,enhancing the degradation performance at low input powers.However,too small packing pellets decrease the gas residence time and reduce the degradation efficiency,especially for the input power beyond 80 W.Besides,lowering the packing size promotes the generation of SO2,while reduces the yields of S-O-F products,corresponding to a better degradation.After the discharge,the pellet surface becomes smoother with the appearance of S and F elements.Density functional theory calculations show that SF_(6)is likely to be adsorbed at the AlIII site over theγ-Al_(2)O_(3)(110)surface,and it is much more easily to decompose than in the gas phase.The fluorine gaseous products can decompose and stably adsorb on the pellet surface to change the surface element composition.This work provides a better understanding of SF_(6)degradation in a PB-DBD system. | Zhaolun Cui Chang Zhou Amin Jafarzadeh Shengyan Meng Yanhui Yi Yufei Wang Xiaoxing Zhang Yanpeng Hao Licheng Li Annemie Bogaerts | 2022 | High Voltage2022，7，6： | 1 |
| 17 | Neurobiological mechanisms and related clinical treatment of addiction: a review显示文摘Drug addiction or substance use disorder(SUD),has been conceptualized as a three-stage(i.e.binge/intoxication,withdrawal/negative affect,and preoccupation/anticipation/craving)recurring cycle that involves complex changes in neuroplasticity,reward,motivation,desire,stress,memory,and cognitive control,and other related brain regions and brain circuits.Neuroimaging approaches,including magnetic resonance imaging,have been key to mapping neurobiological changes correlated to complex brain regions of SUD.In this review,we highlight the neurobiological mechanisms of these three stages of addiction.The abnormal activity of the ventral tegmental,nucleus accumbens,and caudate nucleus in the binge/intoxication stage involve the reward circuit of the midbrain limbic system.The changes in the orbitofrontal cortex,dorsolateral prefrontal cortex,amygdala,and hypothalamus emotional system in the withdrawal/negative affect stage involve increases in negative emotional states,dysphoric-like effects,and stress-like responses.The dysregulation of the insula and prefrontal lobes is associated with craving in the anticipation stage.Then,we review the present treatments of SUD based on these neuroimaging findings.Finally,we conclude that SUD is a chronically relapsing disorder with complex neurobiological mechanisms and multimodal stages,of which the craving stage with high relapse rate may be the key element in treatment efficacy of SUD.Precise interventions targeting different stages of SUD and characteristics of individuals might serve as a potential therapeutic strategy for SUD. | Yehong Fang Yunkai Sun Yi Liu Tieqiao Liu Wei Hao Yanhui Liao | 2022 | Psychoradiology2022，2，4： | 1 |
| 18 | A comparative study on catalyst deactivation of nickel and cobalt incorporated MCM-41 catalysts modified by platinum in methane reforming with carbon dioxide显示文摘 | Dapeng Liu Wei Ni Evelyn Cheo Yi Wen Yvonne Lim Armando Borgna Raymond Lau Yanhui Yang | 2010 | Catalysis Today2010，，3： | 1 |
| 19 | Analysis of system trustworthiness based on information flow noninterference theory显示文摘The trustworthiness analysis and evaluation are the bases of the trust chain transfer. In this paper the formal method of trustworthiness analysis of a system based on the noninterference(NI) theory of the information flow is studied. Firstly, existing methods cannot analyze the impact of the system states on the trustworthiness of software during the process of trust chain transfer. To solve this problem, the impact of the system state on trustworthiness of software is investigated, the run-time mutual interference behavior of software entities is described and an interference model of the access control automaton of a system is established.Secondly, based on the intransitive noninterference(INI) theory, a formal analytic method of trustworthiness for trust chain transfer is proposed, providing a theoretical basis for the analysis of dynamic trustworthiness of software during the trust chain transfer process.Thirdly, a prototype system with dynamic trustworthiness on a platform with dual core architecture is constructed and a verification algorithm of the system trustworthiness is provided. Finally, the monitor hypothesis is extended to the dynamic monitor hypothesis, a theorem of static judgment rule of system trustworthiness is provided, which is useful to prove dynamic trustworthiness of a system at the beginning of system construction. Compared with previous work in this field, this research proposes not only a formal analytic method for the determination of system trustworthiness,but also a modeling method and an analysis algorithm that are feasible for practical implementation. | Xiangying Kong Yanhui Chen Yi Zhuang | 2015 | Journal of Systems Engineering and Electronics2015，26，2： | 1 |
| 20 | Bandgap narrowing and polarization enhancement in(K,Na,Li)(Nb,Sb,Ta)O_(3)+x%Fe_(2)O_(3) lead-free ceramics for photovoltaic applications显示文摘The need for ferroelectric materials with both narrow bandgaps(Eg)and large remanent polarization(Pr)remains a key challenge to the development of high-efficiency ferroelectric photovoltaic(FPV)devices.In this work,[(K_(0.43)Na_(0.57))_(0.94)Li_(0.06)][(Nb_(0.94)Sb_(0.06))_(0.95)Ta_(0.05)]O_(3)(KNLNST)-based lead-free ceramics with narrow Eg and large P are obtained via Fe_(2)O_(3) doping.By optimizing the level of Fe_(2)O_(3) doping,a KNLNST+1.3%Fe_(2)O_(3) ceramic is fabricated that simultaneously possesses a narrow Eg of 1.74 eV and a large Pr of 27.05μC/cm^(2).These values are much superior to those of undoped KNLNST ceramics(Eg=3.1 eV and Pr=17.73μC/cm^(2)).While the large P stems from the increment of the volume ratio between the orthorhombic and tetragonal phases(Vo/VT)in KNLNST ceramics by proper amount of Fe3+doping,the narrow Eg is attributed to the coupling interaction between the Fe3+dopants and the B-site Sb3+host ions.Moreover,a switchable photovoltaic effect caused by the ferroelectric depolarization electric field(Edp)is observed in the KNLNST+1.3%Fe_(2)O_(3) ceramic-based device.Thanks to the narrower Eg and larger P,of the doped ceramic,the photovoltaic performance of the corresponding device(open-circuit voltage(Voc)=-5.28 V and short-circuit current density(JSC)=0.051μA/cm^(2))under a downward poling state is significantly superior to that of an undoped KNLNST-based device(Voc=-0.46 V and Jse=0.039μA/cm^(2)).This work offers a feasible approach to developing ferroelectric materials with narrow bandgaps and large Pr for photovoltaic applications. | Jian Chen Jiaxing Mao Zihui Wang Yanhui Dong Jinming Guo Mingkai Li Yi Zhang Yinmei Lu Yunbin He | 2023 | Journal of Advanced Ceramics2023，12，7： | 0 |
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