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| 1 | Enhancing carrier transport in flexible CZTSSe solar cells via doping Li strategy显示文摘The passivation of non-radiative states and inhibition of band tailings are desirable for improving the open-circuit voltage(V_(oc))of CZTSSe thin-film solar cells.Recently,alkali metal doping has been investigated to passivate defects in CZTSSe films.Herein,we investigate Li doping effects by applying Li OH into CZTSSe precursor solutions,and verify that carrier transport is enhanced in the CZTSSe solar cells.Systematic characterizations demonstrate that Li doping can effectively passivate non-radiative recombination centers and reduce band tailings of the CZTSSe films,leading to the decrease in total defect density and the increase in separation distance between donor and acceptor.Fewer free carriers are trapped in the band tail states,which speeds up carrier transport and reduces the probability of deep-level defects capturing carriers.The charge recombination lifetime is about twice as long as that of the undoped CZTSSe device,implying the heterojunction interface recombination is also inhibited.Besides,Li doping can increase carrier concentration and enhance build-in voltage,leading to a better carrier collection.By adjusting the Li/(Li+Cu)ratio to 18%,the solar cell efficiency is increased significantly to 9.68%with the fill factor(FF)of 65.94%,which is the highest FF reported so far for the flexible CZTSSe solar cells.The increased efficiency is mainly attributed to the reduction of V_(oc)deficit and the improved CZTSSe/Cd S junction quality.These results open up a simple route to passivate non-radiative states and reduce the band tailings of the CZTSSe films and improve the efficiency of the flexible CZTSSe solar cells. | Qiong Yan Quanzhen Sun Hui Deng Weihao Xie Caixia Zhang Jionghua Wu Qiao Zheng Shuying Cheng | 2022 | Journal of Energy Chemistry2022，，12： | 2 |
| 2 | Simulation Test on Charge Density and Surface Potential in an Oil Tank Dur- ing Filling Operation显示文摘 | Keping Sun Quanzhen Liu Xuewen Li | 2009 | Journal of Electrostatics2009，67，： | 1 |
| 3 | RHOBTB2 gene associated epilepsy and paroxysmal movement disorder:two cases report and literature review显示文摘Background:RHOBTB2 gene is associated with developmental and epileptic encephalopathy-64(DEE-64),which is characterized by epilepsy,developmental delay,microcephaly,unspecific facial dysmorphism,and paroxysmal movement disorders.Most previous studies showed that the phenotypes of RHOBTB2 gene include developmental and epileptic encephalopathy(DEE)and DEE with paroxysmal movement disorders.Only one study showed that patient with RHOBTB2 variant had paroxysmal movement disorders with no epilepsy.Case presentations:Two cases with RHOBTB2 variants are presented here:Case one was diagnosed as DEE,he had recurrent afebrile focal status epilepticus and paroxysmal extrapyramidal symptoms in infancy.Interictal electroencephalogram(EEG)showed focal discharges.Brain magnetic resonance imaging(MRI)showed cortical dysplasia.Epilepsy of case one was refractory.Nevertheless,case two only showed paroxysmal movement disorders alone in adolescence.Video EEG showed focal discharges during an interictal dystonic episode and he brain MRI was normal.Conclusion:The phenotypes of RHOBTB2 gene include DEE,paroxysmal movement disorders,and DEE with paroxysmal movement disorders.RHOBTB2 can be one of the pathogenic genes of paroxysmal movement disorders. | Xueyang Niu Yan Sun Ying Yang Miaomiao Cheng Quanzhen Tan Jie Zhang Yuehua Zhang | 2021 | Acta Epileptologica2021，3，1： | 1 |
| 4 | In-doping collaboratively controlling back interface and bulk defects to achieve efficient flexible CZTSSe solar cells显示文摘Focusing on the low open circuit voltage(V_(OC))and fill factor(FF)in flexible Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)solar cells,indium(In)ions are introduced into the CZTSSe absorbers near Mo foils to modify the back interface and passivate deep level defects in CZTSSe bulk concurrently for improving the performance of flexible device.The results show that In doping effectively inhibits the formation of secondary phase(Cu(S,Se)_(2))and VSndefects.Further studies demonstrate that the barrier height at the back interface is decreased and the deep level defects(Cu_(Sn)defects)in CZTSSe bulk are passivated.Moreover,the carrier concentration is increased and the V_(OC) deficit(V_(OC,def))is decreased significantly due to In doping.Finally,the flexible CZTSSe solar cell with 10.01%power conversion efficiency(PCE)has been obtained.The synergistic strategy of interface modification and bulk defects passivation through In incorporation provides a new thought for the fabrication of efficient flexible kesterite-based solar cells. | Quanzhen Sun Yifan Li Caixia Zhang Shunli Du Weihao Xie Jionghua Wu Qiao Zheng Hui Deng Shuying Cheng | 2024 | Journal of Energy Chemistry2024，89，2： | 0 |
| 5 | An Introduction to the Special Issue显示文摘Shelf seas are important systems supporting China’s rapid economic and societal developments.However,the Yellow Sea(YS)and the East China Sea(ECS)environments have undergone dramatic changes recently,which have profoundly impacted their ecosystem health.Being within the Asian monsoon-dominated region,the environment of the YS and the ECS is influenced by oceanic processes such as the intrusion of the Kuroshio Current(KC)and by human activities of China’s rapidly developed coastal regions.Thus,the YS and the ECS are ideal regions to understand and to distinguish the influences | ZHAO Meixun SUN Liguang CHEN Quanzhen JIANG Wensheng | 2013 | Journal of Ocean University of China2013，12，4： | 0 |
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