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Journal of Semiconductors 2024年第2期45卷 67-73页

作者： Zhe He Gentian Yue Yueyue Gao Chen Dong furui tan School of Future Technology and Henan Key Laboratory of Photovoltaic Materials Henan UniversityKaifeng 475004China Zhenjiang Mars Photoenergy Technology Co. LtdZhenjiang 212011China

The TiO_(2) with nanoparticles(NPs),nanowires(NWs),nanorods(NRs)and nanotubes(NTs)structures were prepared by using a in-situ hydrothermal technique,and then proposed as a photoanode for flexible dye-sensitized solar cell(FDSSC).The influences of the morphology of TiO_(2) on the photovoltaic performances of FDSSCs were investigated.Under rear illumination of 100 mW·cm^(−2),the power conversion efficiencies of FDSSCs achieved 6.96%,7.36%,7.65%,and 7.83%with the TiO_(2) photoanodes of NPs,NWs,NRs,and NTs and PEDOT counter electrode.The FDSSCs based on TiO_(2) NRs and NTs photoanodes have higher short circuit current densities and power conversion efficiencies than that of the others.The enhanced power conversion efficiency is responsible for their nanotubes and rod-shaped ordered structures,which are more beneficial to transmission of electron and hole in semiconductor compared to the TiO_(2) nanoparticles and nanowires disordered structure.

关键词： dye-sensitized solar cells photoanode TiO_(2) morphology

Characterization of interfaces: Lessons from the past for the future of perovskite solar cells

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Journal of Semiconductors 2022年第5期43卷 58-69页

作者： Wanlong Wang Dongyang Zhang Rong Liu Deepak Thrithamarassery Gangadharan furui tan Makhsud I.Saidaminov Key Laboratory of Photovoltaic Materials Henan UniversityKaifeng 475004China Department of Chemistry Department of Electrical&Computer Engineeringand Centre for Advanced Materials and Related Technologies(CAMTEC)University of VictoriaVictoriaBritish Columbia V8P 5C2Canada

A photovoltaic technology historically goes through two major steps to evolve into a mature technology. The first step involves advances in materials and is usually accompanied by the rapid improvement of power conversion efficiency. The second step focuses on interfaces and is usually accompanied by significant stability improvement. As an emerging generation of photovoltaic technology, perovskite solar cells are transitioning to the second step of their development when a significant focus shifts toward interface studies and engineering. While various interface engineering strategies have been developed, interfacial characterization is crucial to show the effectiveness of interfacial modification. Here, we review the characterization techniques that have been utilized in studying interface properties in perovskite solar cells. We first summarize the main roles of interfaces in perovskite solar cells, and then we discuss some typical characterization methodologies for morphological, optical,and electrical studies of interfaces. Successful experiences and existing problems are analyzed when discussing some commonly used methods. We then analyze the challenges and provide an outlook for further development of interfacial characterizations. This review aims to evoke strengthened research devotion on novel and persuasive interfacial engineering.

关键词： interface perovskite solar cells characterization methods

A binder-free CF|PANI composite electrode with excellent capacitance for asymmetric supercapacitors

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Journal of Semiconductors 2023年第3期44卷 95-103页

作者： Kexin Li Gentian Yue furui tan Henan Key Laboratory of Photovoltaic Materials and Laboratory of Low-Dimensional Materials Science Henan UniversityKaifeng 475004China

In this work,carbon fiber and polyaniline(CF|PANI)composites are prepared by using an electrochemical polymeriza-tion method.The morphology and composition characterization results show that the PANI nanospheres are successfully syn-thesized and uniformly coated on the CF.When the electrodeposition period is 300 cycles,the as-prepared CF|PANI electrode ex-hibits good specific capacitance of 231.63 F/g at 1 A/g,high performance of 98.14%retention rate from 0.5 to 20 A/g,and excel-lent cycle stability with only 0.96%capacity loss after 1000 cycles.This is ascribed to the internal resistance that was signific-antly reduced without binders,which helps to the CF|PANI electrode maintains high operating potential and pseudo-capacit-ance performance at high current density.The symmetrical supercapacitor based on two CF|PANI electrodes connecting by acid-ic PVA-H2SO4 gel electrolyte exhibits an energy density of 6.55 W·h/kg at a power density of 564.37 W/kg.In addition,the asym-metric supercapacitor based on MoS2|MWCNTs and CF|PANI electrodes with neutral PVA-Na2SO4 gel electrolyte shows an en-ergy density of 16.12 W·h/kg at a power density of 525.03 W/kg.These results indicate that the low internal resistance contrib-utes to the high energy density of symmetrical supercapacitors and asymmetric supercapacitors at high current density and high power density,which is significant for its practical application.

关键词： quasi-solid state supercapacitor carbon fibers binder-free polyaniline

Banana-shaped electron acceptors with an electron-rich core fragment and 3D packing capability

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Carbon Energy 2023年第1期5卷 123-133页

作者： Pengqi Li Xianyi Meng Ke Jin Zhiwei Xu Jianqi Zhang Lixiu Zhang Chuang Niu furui tan Chenyi Yi Zuo Xiao Yaqing Feng Guan-Wu Wang Liming Ding School of Chemical Engineering and Technology Tianjin UniversityTianjinChina Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS) Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijingChina University of Chinese Academy of Sciences BeijingChina Department of Chemistry University of Science and Technology of ChinaHefeiChina Key Laboratory of Photovoltaic Materials Henan UniversityKaifengChina Department of Electrical Engineering Tsinghua UniversityBeijingChina

The emergence of Y6-type nonfullerene acceptors has greatly enhanced the power conversion efficiency(PCE)of organic solar cells(OSCs).However,which structural feature is responsible for the excellent photovoltaic performance is still under debate.In this study,two Y6-like acceptors BDOTP-1 and BDOTP-2 were designed.Different from previous Y6-type acceptors featuring an A–D–Aʹ–D–A structure,BDOTP-1,and BDOTP-2 have no electron-deficient Aʹfragment in the core unit.Instead,there is an electron-rich dibenzodioxine fragment in the core.Although this modification leads to a marked change in the molecular dipole moment,electrostatic potential,frontier orbitals,and energy levels,BDOTP acceptors retain similar three-dimensional packing capability as Y6-type acceptors due to the similar banana-shaped molecular configuration.BDOTP acceptors show good performance in OSCs.High PCEs of up to 18.51%(certified 17.9%)are achieved.This study suggests that the banana-shaped configuration instead of the A–D–Aʹ–D–A structure is likely to be the determining factor in realizing high photovoltaic performance.

关键词： 3D packing capability core fragment molecular configuration nonfullerene acceptors organic solar cells

Efficient and stable carbon-based mixed Pb-Sn all-inorganic perovskite solar cells

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Efficient and stable carbon-based mixed Pb-Sn all-inorganic ...

Effcient and stable perovskite solar cells thanks to dual functions of oleyl amine-coated PbSO4(PbO)4 quantum dots:Defect passivation and moisture/oxygen blocking

第八届新型太阳能材料科学与技术学术研讨会

作者： Bingjie Xu Chen Dong Rong Liu Gentian Yue Yueyue Gao furui tan Key Laboratory of Photovoltaic Materials Henan University

Cs-based all-inorganic perovskites have been receiving unprecedented attentions in photovoltaic applications due to their high thermodynamic stability [1-2]. However, unfavorable bandgap and phase instability of Cs-based inorganic perovskites still hinder their further developments [3]. In this work, mixed Pb-Sn inorganic perovskites were prepared by a facile solution process. It was found that the incorporation of Sn in Cs-based inorganic perovskites could not only narrow the bandgap from 2.06 eV to 1.63 eV, but also stabilize the perovskite phase structure by increasing their tolerance factor. By further introducing the antioxidant SnF to slow down the oxidation of Sn, and replacing labile organic hole-transporting-layer and noble metal-electrode with a carbon-electrode, the resultant carbon-based Pb-Sn mixed all-inorganic perovskite solar cells(C-IPSCs) achieved a champion efficiency up to 12.69 % and a high open-circuit voltage of 1.23 V.

关键词： CsPb1-xSnxIBr2 carbon-electrode all-inorganic perovskite bandgap tailoring

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Effcient and stable perovskite solar cells thanks to dual fu...

第七届新型太阳能电池材料科学与技术学术研讨会

作者： Chong Chen Fumin Li Liangxin Zhu Zhitao Shen Yujuan Weng Qiang Lou furui tan Gentian Yue Qingsong Huang Mingtai Wang

The defects in perovskite crystals and the penetration of moisture/oxygen into the perovskite layer are major problems for perovskite solar cells(PSCs) to achieve long-term stability and high power conversion efficiency(PCE).However,there is still a lack of multifunctional passivation materials to solve these problems.Herein,for the first time,we report oleyl amine-coated PbSO(PbO) quantum-dots(QDs),as a passivation material with dual functions to simultaneously passivate the surface defects and block the penetration of moisture/oxygen into the perovskite layer for stable and efficient PSCs.The PbSO(PbO) QDs significantly reduce the defect density of the as-prepared CHNHPbI films by passivating under-coordinated Pb ions and I anions and effectively enhance charge extraction efficiency at the TiO/CHNHPbI and CHNHPbI/spiro-OMeTAD interfaces.Moreover,the hydrogen bond between H atoms of the OA and I atoms of the perovskite and the interface electric field at CHNHPbI/OA interface also contribute to the improvement of efficiency and stability of PSCs.Finally,higher PCE(20.02%) is achieved by the PSCs with OA-coated PbSO(PbO) QDs compared to that(16.86%) of the PSCs without OA-coated PbSO(PbO),corresponding to a 18.7% enhancement.Moreover,the PSCs with OA-coated PbSO(PbO) QDs maintain 90% of initial efficiency after operation for 280 h,indicating better stability than the PSCs without PbSO(PbO) QDs.

关键词： Perovskite solar cells PbSO4（PbO）4 quantum-dots Passivate

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生命拘限与李白的游仙之思

文学遗产 2024年第3期 68-79页

作者：詹福瑞首都师范大学文学院

李白游仙之思是其生命意识的深刻反映,从李白的游仙诗考察其生命意识,既可见李白欲解放肉体之身以实现自由生命的渴望,亦可从根本层面揭示出李白游仙诗的内涵及其价值。古代神仙传说和道教文化的主要精神就是破解人生苦短和肉身局限两... 详细信息

李白游仙之思是其生命意识的深刻反映,从李白的游仙诗考察其生命意识,既可见李白欲解放肉体之身以实现自由生命的渴望,亦可从根本层面揭示出李白游仙诗的内涵及其价值。古代神仙传说和道教文化的主要精神就是破解人生苦短和肉身局限两大困扰,追求肉身不死和生命的自由。李白少时即信神仙之术,一生未曾放弃访道求仙,修炼内丹和外丹是其求仙的具体实践,其游仙诗真实地反映了他追求神仙之术的生活。李白的游仙诗有相当一部分属于游仙想象,想象神仙上天入地、瞬间游历八极的生活,表现出李白欲超越现实世界,获得身心无限自由、人生最大解放的生命渴望。事功生命理想受挫或受到社会黑暗的困扰,更容易激发出李白的高举远引之思。这类游仙诗充满了对现实政治的厌弃,因而具备了批评现实的意味。

关键词：李白生命意识游仙诗

Development of D_α band symmetrical visible optical diagnostic for boundary reconstruction on EAST tokamak

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Plasma Science and Technology 2024年第2期26卷 44-53页

作者：陈明沈飊 Shinichiro KADO 郭笔豪陈大龙蔡福瑞肖炳甲 Hefei Institutes of Physical Science Chinese Academy of SciencesHefei 230031People's Republic of China Science Island Branch Graduate School of University of Science and Technology of ChinaHefei 230026People's Republic of China Institute of Advanced Energy Kyoto UniversityUji 611-0011Japan Graduate School of Energy Science Kyoto UniversityUji 611-0011Japan

To investigate the potential of utilizing visible spectral imaging for controlling the plasma boundary shape during stable operation of plasma in future tokamak, a D_α band symmetric visible light diagnostic system was designed and implemented on the Experimental Advanced Superconducting Tokamak(EAST). This system leverages two symmetric optics for joint plasma imaging. The optical system exhibits a spatial resolution less than 2 mm at the poloidal cross-section, distortion within the field of view below 10%, and relative illumination of 91%.The high-quality images obtained enable clear observation of both the plasma boundary position and the characteristics of components within the vacuum vessel. Following system calibration and coordinate transformation, the image coordinate boundary features are mapped to the tokamak coordinate system. Utilizing this system, the plasma boundary was reconstructed, and the resulting representation showed alignment with the EFIT(Equilibrium Fitting) results. This underscores the system's superior performance in boundary reconstruction applications and provides a diagnostic foundation for boundary shape control based on visible spectral imaging.

关键词： visible optical diagnostic plasma boundary reconstruction EAST

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纳米陶瓷铝合金在汽车上的应用

汽车工艺与材料 2023年第6期 58-62页

作者：胥洲李润哲成龙谭福瑞中国第一汽车股份有限公司研发总院长春130013

纳米陶瓷铝合金是采用物理或化学的方法,以铝或铝合金为基体,由一种或多种不同性质的增强物质组合而成的一种多项固体材料,该材料不仅具有基体铝合金高塑性的优点,同时具备了增强颗粒高硬度、高模量的优点。纳米陶瓷铝合金具有良好的综... 详细信息

纳米陶瓷铝合金是采用物理或化学的方法,以铝或铝合金为基体,由一种或多种不同性质的增强物质组合而成的一种多项固体材料,该材料不仅具有基体铝合金高塑性的优点,同时具备了增强颗粒高硬度、高模量的优点。纳米陶瓷铝合金具有良好的综合性能,可广泛应用于航空航天、电子电气、汽车等领域。重点介绍了一种通过化学方法在铝合金基体中原位自生出纳米陶瓷颗粒,该方法制备出的纳米陶瓷铝合金具有轻质、高刚度、高强度、高抗疲劳、耐高温的优越性能,其力学性能远高于铝合金,同时保持了铝合金良好的加工制造性能。

关键词：纳米陶瓷铝合金复合材料增强颗粒原位自生

一种基于Savitzky-Golay滤波的物理层密钥生成方法

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电讯技术 2024年第6期64卷 967-972页

作者：韩志芳战福瑞大连东软信息学院基础教学学院辽宁大连116023 大连海事大学信息科学技术学院辽宁大连116026

物理层密钥生成技术使得节点能够利用无线信道的物理特性直接生成共享密钥,从而保证无线通信过程的安全性。针对当前物理层密钥生成方案普遍存在实际场景下密钥生成率低的问题,提出了一个基于Savitzky-Golay滤波的物理层密钥生成机制优... 详细信息

物理层密钥生成技术使得节点能够利用无线信道的物理特性直接生成共享密钥,从而保证无线通信过程的安全性。针对当前物理层密钥生成方案普遍存在实际场景下密钥生成率低的问题,提出了一个基于Savitzky-Golay滤波的物理层密钥生成机制优化方案。该方案中,合法通信节点首先探测信道并通过Savitzky-Golay滤波消除部分由信道干扰造成的信道状态差异,然后,利用多级量化以及格雷码将信道状态转为比特序列,最终通过Cascade交互式信息协调协议以及基于2阶全域哈希函数的保密增强生成合法节点之间的共享密钥。实验结果表明,基于Savitzky-Golay滤波的优化方案能够有效提高物理层密钥生成过程的效率,提高了此类安全机制的实际可用性。

关键词：物理层密钥生成 Savitzky-Golay滤波全域哈希函数