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Performance improvement of DBP-based solar cells by introducing a luminescent sensitizer bis[(4,6-difluorophenyl)-pyridinato-N,C^(2')]c(picolinate)iridium(III)(Flrpic)

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Frontiers of Materials Science 2021年第1期15卷 158-165页

作者： Jie TANG Weiguang LI Juncong CHEN Yanqiong ZHENG Junbiao PENG Jianhua ZHANG Bin WEI Xifeng LI Key Laboratoy of Advanced Display and System Applications(MOE) School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200072China School of Materials Science and Engineering Shanghai UniversityShanghai 200072China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China

In this work,a sky-blue luminescent down-shifting(LDS)layer bis[(4,6-difluorophenyl)-pyridinato-N,C^(2')]c(picolinate)iridium(II)(FIrpic)was inserted between tetraphenyl dibenzoperiflanthene(DBP)and Mo0_(3)as UV-screen and sensitizer for smallmolecule DBP/C_(60)based planar heterojunction(PHJ)solar *** 8-nm Flrpic theshort circuit current(J_(sc))and power conversion efficiency(PCE)of the device areenhanced by 28%and 15%,respectively,probably originating from the re-absorption ofthe photons emitted from *** V_(oc)linearly increases over 1-nm Flrpic,ascribed tothe deeper HOMO level of Flrpic than DBP,while the fill factor continuously declines from 3-to 10-nm *** EQE spectra prove that the J_(sc)is mainly contributed by thephotocurrent generated in DBP and C_(60)*** the FIrpic thickness is 8 nm,the filmsurface is very uniform with the smallest water contact *** impedance spectro-scopy demonstrates that the device resistance gradually increases from 4.1×10^(4)Ω(without Flrpic)to 4.6×10^(4)Ω(with 10-nm Flrpic)with the FIrpic thickness rise,simultaneously the device transits from the insulating state into the conductive statefaster for the thin Flrpic layer than the thick layer.

关键词： small molecule solar cell sky-blue luminescent sensitizer UV-screen Flrpic DBP

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Online-programming IP design and implementation based on SoC

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Open Automation and Control systems Journal 2013年第1期5卷 59-66页

作者： Yang, Wenrong Jiang, Chao Hu, Yueli Key Laboratory of Advanced Display and System Application Shanghai University Shanghai 200072 China School of Mechatronic Engineering and Automation Shanghai University Shanghai 200072 China

It is mainly proposed that the design and implementation for an online-programming IP core based on MV10, an SoC, which is an 8-bit MCU having passed the silicon verification with Global Foundry 0.35um mix-signal library in this thesis. The online-programming IP core can write BIN file into the on-chip SRAM, which is mainly controlled by erasing state machine and programming state machine, for program debugging with high accuracy-communication and error self-detection. The online-programming IP core proposed in this thesis can also be used in other SoCs. © Yang et al.

关键词： system-on-chip

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Simple and effective:Superlubricity behaviour of the G-quadruplex hydrogel with high selectivity for K^(+) ions based on the ocular environment

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Friction 2024年第11期12卷 2548-2562页

作者： Hongdong WANG Jian WU Kunpeng WANG Yunjuan SU Xiacong ZHANG Yuhong LIU Jianhua ZHANG School of Mechatronic Engineering and Automation and Key Laboratory of Advanced Display and System Application Ministry of EducationShanghai UniversityShanghai 200444China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China Department of Polymer Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

Hydrogels have been the subject of significant research in the field of friction due to their exceptional lubricating *** this study,the G-quadruplex hydrogel with high selectivity for K^(+) ions was formed by introducing a mixture of G,2-formylphenylboronic acid,and polyethylene glycol diamine into simulated artificial tears solution with high transparency,and an ultra-low coefficient of friction(COF)of about 0.004 was obtained based on the simulated ocular environment,thus achieving macroscopic *** friction pairs simulating the ocular environment,to assess the frictional performance of the G-quadruplex hydrogel as both a lubricant and a friction pair based on the simulated ocular environment,we conducted experiments considering various factors such as concentration,sliding speed,and *** these experiments,it was found that superlubricity was achieved when the G-quadruplex hydrogel was applied as lubricant or friction *** effect was attributed to the three-dimensional network structure and hydrophilicity of the hydrogel,which facilitated the formation of a highly bearing and flowing hydration layer,promoting macroscopic *** to the G-quadruplex hydrogel with low concentration,the high concentration hydrogel(75 mM)exhibited increased mechanical strength and robustness in *** with biocompatibility experiments,our synthesized G-quadruplex hydrogel has excellent biocompatibility and offers a novel approach to achieve superlubricity in ocular drug delivery.

关键词： superlubricity ocular environment G-quadruplex hydrogel bio-compatibility

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Aqueous Sr-doped In2O3 TFT stability under negative bias illumination stress

Aqueous Sr-doped In2O3 TFT stability under negative bias ill...

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International Conference on display Technology, ICDT 2019

作者： Zhou, Youhang Li, Jun Yang, Yaohua Li, Xifeng Zhang, Jianhua School of Material Science and Engineering Shanghai University Shanghai Jiading China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai China

ISBN: (纸本)9781510896161

In this paper, the Sr-doped In2O3 thin film is fabricated by aqueous route and the stability of InSrO thin film transistor under negative bias illumination stress (NBIS) is investigated. It is found that Sr can effectively improve the stability of In2O3 TFTs under NBIS, which is due to the reduction of oxygen vacancies. The XPS measurement is tested to analyze the variation of oxygen vacancy concentration. The density of states is calculated to further confirm the decrease of total trap state caused by Sr doping. © 2019, John Wiley and Sons Inc. All rights reserved.

关键词： Thin film transistors

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Global optimization of process parameters for low-temperature SiN_(x) based on orthogonal experiments

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Advances in Manufacturing 2023年第2期11卷 181-190页

作者： Lian-Qiao Yang Chi Zhang Wen-Lei Li Guo-He Liu Jia-Qi Wu-Ma Jin-Qiang Liu Jian-Hua Zhang School of Materials Science and Engineering Shanghai UniversityShanghai200444People's Republic of China Key Laboratory of Advanced Display and System Applications Ministry of EducationShanghai UniversityShanghai200072People's Republic of China Huawei Technologies Co. LtdShanghai200120People's Republic of China

Low-temperature silicon nitride(SiNx)films deposited by plasma-enhanced chemical vapor deposition(PECVD)have huge application potential in the flexible ***,the applicability of SiNx largely depends on the film’s general properties,including flexibility,deposition rate,residual stress,elastic modulus,fracture strain,dielectric constant,refraction index,*** optimization towards specific application by conventional experiment design needs lots of work due to the interaction of muti quality and process ***,an efficient global optimization approach for the process technology was proposed based on the Taguchi orthogonal experiment method considering muti-factor *** of all,the Taguchi orthogonal experiment design and analysis was used to rank the influences of main process parameters on the quality characteristics,including radio frequency(RF)power,pressure,silane flow rate,ammonia flow rate and nitrogen flow ***,the global optimization approach was carried out utilizing the multi-response optimizer considering the combination target of film formation rate,residual stress,dielectric constant,elastic modulus,fracture strain,refractive ***,the optimal solution of the SiNx film was finally obtained and verified.

关键词： Plasma-enhanced chemical vapor deposition(PECVD) Low-temperature silicon nitride(SiNx) Flexible display Taguchi orthogonal experiment Process optimization

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Three-dimensional MXene/carbon nanotube composite electrodes in flexible 64-channel arrays for noninvasive electromyography signal acquisition

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Science China Materials 2024年第9期67卷 2977-2984页

作者： Lian Cheng Aiying Guo Jun Li Mengjiao Li Qiang Lei Wen Xu Xiaolin Guo Jianhua Zhang School of Microelectronics Shanghai UniversityShanghai201800China Key Laboratory of Advanced Display and System Applications Ministry of EducationShanghai UniversityShanghai200072China

Non-invasive surface electromyography(sEMG)electrodes have vast potential in fields such as healthcare,human-computer interaction,and entertainment,providing diverse information related to electromyographic ***-invasive sEMG electrodes reduce user risks but gather sEMG signals of lower quality compared to invasive ***,various advanced electrode materials have been developed for detecting physiological electrical signals,but the majority of them are single channel ***,we report 64-channel three-dimensional(3D)Ti_(3)C_(2)MXene/CNT composite electrodes fabricated using bonding-driven self-assembly *** electrodes are characterized by low skin-electrode contact impedance and a high signal-to-noise ratio(SNR)for collection of EMG *** electrode arrays exhibit remarkable flexibility,conforming seamlessly to the skin’s ***,the skin-electrode contact impedance of 3D Ti_(3)C_(2)MXene/CNT electrodes decreases by 10-fold compared to Ag/AgCl gel electrodes at a frequency of 100 ***,when collecting sEMG signals from the arm,the prepared Ti_(3)C_(2)MXene/CNT electrodes exhibit lower baseline noise and higher SNR compared to Ag/AgCl gel ***,Ti_(3)C_(2)MXene/CNT electrodes can collect sEMG signals of different hand gestures,while maintaining a high SNR(∼25 dB).By combining machine learning,sEMG signals from different gestures can be identified with a recognition rate exceeding 90%.The exceptional performance and scalability of these 3D Ti_(3)C_(2)MXene/CNT electrodes indicate a promising future for shaping electronic skin and wearable device technologies.

关键词： electrodes surface electromyography skin-contact impedance Ti_(3)C_(2)MXenes CNTs

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Polymer Photovoltaic Cells Based on Ultraviolet-Ozone-Treated Vanadium-Doped Indium Oxide Anodes

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Chinese Physics Letters 2012年第8期29卷 297-300页

作者： GUO Xiao-Yang LUO Jin-Song CHEN Hong LIU Xing-Yuan State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033 Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033

Polymer photovoltaic(PV)cells based on UV-ozone(UVO)-treated indium vanadium oxide(IVO)anodes are *** performance of cells with UVO-treated IVO film anodes without interfacial layers was significantly improved compared with those containing untreated IVO *** origin of the enhancement is investigated by atomic force microscopy and photoelectron spectroscopy *** results demonstrate that UVO treatment can smooth the IVO surface,and increase the work function of IVO films due to the removal of carbon contamination and a dipole resulting from a surface rich in negatively charged ***-treated IVO films are potential electrode materials for polymer PV cells.

关键词： Polymer vanadium dipole

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Laser Bonding system for Semiconductor Device and MEMS Encapsulation

Laser Bonding System for Semiconductor Device and MEMS Encap...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Yuneng Lai Jianhua Zhang Yuanhao Huang Maoyu Li Zunmiao Chen Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Educat Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Educat

A semi-automatic laser bonding system is developed to provide a localized heating manner for semiconductor device and MEMS encapsulation, especially for devices which have thermal-sensitive materials inside. This system consists of five modules, including laser module, motion module, fixture module, monitoring module and control module. Several bonding tests are carried out using this system with different sets of system parameters, including laser power, laser beam radius and laser moving velocity. Good bonding results are achieved with proper combinations of the system parameters, which also certifies this system is workable.

关键词： Laser beams Power lasers Bonding Semiconductor lasers Glass Laser modes Encapsulation

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Fast mode decision algorithm for extended macroblock motion estimation in key technology areas

Fast mode decision algorithm for extended macroblock motion ...

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作者： Shen, Liquan Zhang, Zhaoyang Shanghai University Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 200072 China

Block sizes larger than the traditional 16×16 macroblock (MB) structure and extended macroblock (EMB) size motion estimation (ME) are introduced in joint model key technology areas software to improve the inter block coding efficiency. Similar to H.264, variable size motion estimation (VS-ME) is still adopted for each 16×16 MB including 16×16, 16×8, 8×16, 8×8, 8×4, 4×8, and 4×4. EMB size ME and VS-ME achieve the highest possible coding efficiency, but result in extremely large coding time which obstructs it from practical use. A fast mode decision algorithm for EMBs based on motion homogeneity is proposed to reduce the computational complexity of ME. The basic idea of the proposed method is to utilize the spatial property of motion field in prediction where EMB size ME and small size ME (including 8×8, 8×4, 4×8 and 4×4) are needed, and only in these regions EMB size ME and small size ME are enabled. The motion field is generated by the corresponding motion vectors in spatial window. Simulation results show that the proposed algorithm can save 55% average computational complexity, with negligible loss of coding efficiency. © 2012 SPIE and IS&T.

关键词： Motion estimation

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Optimizing Photonic Annealing Technique for Full-Solution-Processed Oxide Thin Film Transistor

Optimizing Photonic Annealing Technique for Full-Solution-Pr...

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International Conference on display Technology, 2024

作者： Xu, Meng Li, Xifeng Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai200072 China

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