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Efficiency improvement of flexible dye-sensitized solar cells by introducing mesoporous TiO_2 microsphere

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Science China Chemistry 2013年第10期56卷 1470-1477页

作者： FAN LeQing CHEN Yuan WU JiHuai LI ZhaoLei XIAO YaoMing huang miaoliang YU HaiJun Engineering Research Center of Environment-Friendly Functional Materials Ministry of Education Key Laboratory of Functional Materials for Fujian Higher Education Institute of Materials Physical Chemistry Huaqiao University

Mesoporous TiO2microsphere(MTM)was synthesized via a simple solution route and then mixed with commercial TiO2(P25)to form highly homogeneous and stable TiO2colloid by simple hydrothermal *** TiO2colloid was coated onto the plastic conductive substrate to prepare mesoporous TiO2film for flexible dye-sensitized solar cells(DSSCs)by low-temperature heat *** influence of MTM content on the physicochemical properties of the flexible TiO2film was characterized by scanning electron microscope,transmission electron microscopy,X-ray diffraction,energy-dispersive X-ray spectrometer,N2adsorption-desorption isotherms,UV–vis absorption and diffuse reflectance *** is revealed that with increasing the MTM content,the dye-loading capability of TiO2film and light-harvesting efficiency of flexible DSSCs are improved due to MTM having high surface area and acting as a light scattering center,respectively,resulting in the enhancement of photocurrent of flexible ***,more and larger cracks having negative effect on the performances of flexible DSSCs are formed *** the optimal condition with MTM content of 20%,a flexible DSSC with overall light-to-electric energy conversion efficiency of 2.74%is achieved under a simulated solar light irradiation of 100 mW cm 2(AM 1.5),with 26%improvement in comparison with DSSCs based on P25 alone.

关键词： mesoporous TiO2 microsphere dye-sensitized solar cell flexible mesoporous TiO2 film hydrothermal treatment

Flexible solar cells based on PCBM/P3HT heterojunction

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Frontiers of Optoelectronics 2011年第1期4卷 108-113页

作者： Gentian YUE Jihuai WU Yaoming XIAO Jianming LIN miaoliang huang Engineering Research Center of Environment-Friendly Functional Materials Ministry of Education Institute of Materials Physical ChemistryHuaqiao University

[6,6]-phenyl-C61-butyric acid methyl ester（PCBM）/poly（3-hexylthiophene）(P3HT) heterojunction has not only the absorption in ultraviolet light for PCBM,but also the absorption in visible light for P3HT, which widens the incident light harvest range, improving the photoelectrical response of hybrid solar cell *** conducting polymers blend heterojunction consisting of C60derivatives PCBM and P3HT as charge carrier transferring medium to replace I3–/I–redox electrolyte and dye, a novel flexible solar cell was fabricated in this *** influence of PCBM/P3HT mass ratio on the photovoltaic performance of the solar cell was also *** a simulated solar irradiation of 100 mW·cm–2, the flexible solar cell achieved a light-to-electric energy conversion efficiency of 1.04%, an open circuit voltage of 0.86 V, short circuit current density of 2.6 mA·cm–2and fill factor（FF） of 0.46.

关键词： flexible solar cell heterojunction [6 6]-phenyl-C61-butyric acid methyl ester (PCBM) poly (3-hexylthiophene) (P3HT)

Gelation of a liquid electrolyte with aniline for use in a quasi-solid-state dye-sensitized solar cell

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Science China Chemistry 2012年第11期55卷 242-246页

作者： LAN Zhang WU JiHuai LIN JianMing huang miaoliang Engineering Research Center of Environment-Friendly Functional Materials Ministry of EducationKey Laboratory of Functional Materials for Fujian Higher EducationInstitute of Materials Physical ChemistryHuaqiao UniversityQuanzhou 362021China

A new kind of gel electrolyte containing only organic solvents and an iodide salt-namely 3-methoxypropionitrile(MPN),aniline and AlI 3 -has been *** formation results from the Lewis acid-base interaction between the Lewis acid ionic conductor AlI 3 and the Lewis base organic solvent aniline and no additional gelling agent is *** AlI 3-aniline complex acts both as an ionic conductor and as a gelling *** differences between the peaks characteristic of the-NH 2 group and aromatic ring in the FTIR spectra of free aniline and the AlI 3-aniline hybrid confirm the formation of the AlI 3-aniline *** photovoltaic performance and long-term stability of dye-sensitized solar cells can be greatly enhanced by the addition of aniline to the AlI 3-MPN liquid electrolyte.

关键词： dye-sensitized solar cell AII3 aniline Lewis acid-base interaction gel electrolyte

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A dye-sensitized solar cell based on PEDOT:PSS counter electrode

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Chinese Science Bulletin 2013年第4期58卷 559-566页

作者： YUE GenTian WU JiHuai XIAO YaoMing LIN JianMing huang miaoliang FAN LeQing YAO Ying Engineering Research Center of Environment-Friendly Functional Materials Ministry of Education Institute of Materials Physical Chemistry Huaqiao University

A counter electrode for dye-sensitized solar cell (DSSC) was prepared by coating poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) with high transparency and adhesion on a conducting FTO glass at low temperature. The surface morphology, conductivity, sheet resistance, redox properties and photoelectric properties of the PEDOT:PSS/carbon electrodes were observed using scanning electron microscopy, a four-probe tester and a CHI660D electrochemical measurement system. The experimental results showed that DSSCs had the best photoelectric properties for PEDOT:PSS/carbon counter electrodes annealed at 80°C under vacuum conditions. The overall energy conversion efficiency of the DSSC with PEDOT:PSS/carbon counter electrode and barrier layer reached 7.61% under irradiation from a simulated solar light with intensity of 100 mW/cm2 (AM 1.5). The excellent photoelectric properties, simple preparation procedure and low cost allow the PEDOT:PSS/carbon electrode to be a credible alternative electrode for use in DSSCs.

关键词：染料敏化太阳能电池 PEDOT 碳电极 PSS 扫描电子显微镜乙撑二氧噻吩四探针测试仪光电性能

High-Performance and Hysteresis-Free Perovskite Solar Cells Based on Rare-Earth-Doped SnO_(2) Mesoporous Scaffold

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Research 2019年第1期2019卷 378-390页

作者： Qiyao Guo Jihuai Wu Yuqian Yang Xuping Liu Zhang Lan Jianming Lin miaoliang huang Yuelin Wei Jia Dong Jinbiao Jia Yunfang huang Engineering Research Center of Environment-Friendly Functional Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021China School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China School of Chemical Engineering Huaqiao UniversityXiamen 361021China

Tin oxide(SnO_(2)),as electron transport material to substitute titanium oxide(TiO_(2))in perovskite solar cells(PSCs),has aroused wide ***,the performance of the PSCs based on SnO_(2) is still hard to compete with the TiO_(2)-based ***,a novel strategy is designed to enhance the photovoltaic performance and long-term stability of PSCs by integrating rare-earth ions Ln^(3+)(Sc^(3+),Y^(3+),La^(3+))with SnO_(2) nanospheres as mesoporous *** doping of Ln promotes the formation of dense and large-sized perovskite crystals,which facilitate interfacial contact of electron transport layer/perovskite layer and improve charge transport *** dopant optimizes the energy level of perovskite layer,reduces the charge transport resistance,and mitigates the trap state *** a result,the optimized mesoporous PSC achieves a champion power conversion efficiency(PCE)of 20.63%without hysteresis,while the undoped PSC obtains an efficiency of 19.01%.The investigation demonstrates that the rare-earth doping is low-cost and effective method to improve the photovoltaic performance of SnO_(2)-based PSCs.

关键词： density. perovskite doping

Oxygen self-doping pyrolyzed polyacrylic acid as sulfur host with physical/chemical adsorption dual function for lithium-sulfur batteries

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Chinese Chemical Letters 2024年第7期35卷 473-479页

作者： Yan Wang Huixin Chen Fuda Yu Shanyue Wei Jinhui Song Qianfeng He Yiming Xie miaoliang huang Canzhong Lu Engineering Research Center of Environment-Friendly Functional Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen 361021China

Lithium-sulfur(Li-S)batteries with high theoretical capacity and energy density need to solve problems such as the high decomposition energy barrier of Li_(2)S and large volume change of sulfur in the charging process caused by the shuttle effect before practical ***,a green synthesis method is used to prepare polyacrylic acid(PAA)superabsorbent material,and then the pyrolyzed PAA(P/PAA)material is obtained as the positive electrode of Li-S *** functional calculation reveals that the oxygen self-doping pyrolyzed polyacrylic acid(P/PAA)delivered stronger binding energy toward Li2S species in carbonyl C=O than that of graphite powder(GP)which are-1.58 eV and-1.02 eV,*** with the distribution of relaxation time analysis and the in-situ electrochemical impedance approach,it is further demonstrated that the designed P/PAA as sulfur host plays a physical/chemical adsorption dual function in maintaining the stability and rate performance of *** an initial discharge capacity of 1258 mAh/g at 0.1 C and a minimal capacity decline of 0.05%per cycle even after 800 cycles at 0.5 C,the produced cathode demonstrated outstanding electrochemical *** average Coulombic efficiency is nearly 100%.The P/PAA electrodes may typically retain 96%of their capacity while declining on average only 0.033%per cycle after 130 cycles at 3 *** effort provides a new method for the future development of heteroatomic self-doping superabsorbent with promising adsorption properties for polysulfides as cathode materials of Li-S batteries.

关键词： Polyacrylic acid Oxygen self-doping Green synthetic Pore mesh polymer cathodes Lithium-sulfur batteries

Quantum dot-sensitized solar cells employing Pt/C_(60) counter electrode provide an efficiency exceeding 2%

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Science China Chemistry 2013年第1期56卷 93-100页

作者： YUE GenTian WU JiHuai XIAO YaoMing LIN JianMing huang miaoliang FAN LeQing LAN Zhang Engineering Research Center of Environment-Friendly Functional Materials Ministry of Education Institute of Materials Physical Chemistry Huaqiao University

A microporous platinum/fullerenes (Pt/C 60) counter electrode was prepared by using a facile rapid thermal decomposition method,and the quantum-dot sensitized solar cell (QDSSC) of Pt/C 60-TiO 2-CdS-ZnS and Pt/C 60-TiO 2-CdTe-ZnS was *** technique forms a good contact between QDs and TiO 2 *** photovoltaic performances of the as-prepared cells were *** QDSSCs with Pt/C 60 counter electrode show high power conversion efficiency of 1.90% and 2.06%,respectively (under irradiation of a simulated solar light with an intensity of 100 mW cm 2),which is comparable to the one fabricated using conventional Pt electrode.

关键词： counter electrode quantum dot microporous platinum/fullerenes solar cell

Preparation of porous nanoparticle TiO_2 films for flexible dye-sensitized solar cells

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Chinese Science Bulletin 2011年第24期56卷 2649-2653页

作者： WANG Yue WU JiHuai LAN Zhang XIAO YaoMing LI QingBei PENG FuGuo LIN JianMing huang miaoliang Engineering Research Center of Environment-Friendly Functional Materials Ministry of Education Institute of Materials Physical ChemistryHuaqiao University Quanzhou 362021 China

A TiO2 paste was prepared by mixing commercial TiO2 (P25), ethanol, distilled water and a small amount of Ti (IV) tetrai-sopropoxide (TTIP), following by a hydrothermal treatment. Before hydrothermal treatment, a stirring for 48 h can prevent cracking TiO2 films. TTIP significantly promote the chemical connection between TiO2 particles and its adherence to the substrate, the TTIP amount of 6 mol% is suitable. UV irradiation can remove some impurities and water from the TiO2 film with an optimal time of 2 h. Transmission electron microscopy, X-ray diffraction, scanning electron microscopy and photovoltaic tests are charac- terized and measured. Shortcircuit current density, open-circuit voltage, fill factor and photoelectric conversion efficiencies for the fabricated flexible dye-sensitized solar cell are 7.20 mA cm-2, 0.769 V, 0.686 and 3.84%, respectively, under irradiation with a simulated solar light of 100 mW cm-2.

关键词：染料敏化太阳能电池纳米二氧化钛制造柔性薄膜制备透射电子显微镜 X射线衍射分析扫描电子显微镜紫外线照射

Application of upconversion luminescence in dye-sensitized solar cells

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Chinese Science Bulletin 2011年第1期56卷 96-101页

作者： XIE GuiXiang LIN JianMing WU JiHuai LAN Zhang LI QingHua XIAO YaoMing YUE GenTian YUE HaiFeng huang miaoliang Engineering Research Center of Environment-Friendly Functional Materials Ministry of EducationChinaThe Key Laboratory for Functional Materials of Fujian Higher EducationChinaInstitute of Material Physical ChemistryHuaqiao UniversityQuanzhou 362021China

An upconversion luminescence powder TiO2:(Er3+,Yb3+) is prepared by a hydrothermal method and used to fabricate dye-sensitized solar cell (DSSC).The TiO2:(Er3+,Yb3+) powder undergoes upconversion luminescence,converting infrared light which the dye can not absorb into visible light with wavelengths of 510-700 nm which the dye can absorb,increasing the photocurrent of the ***2:(Er3+,Yb3+) also acts as a p-type dopant,heightening the Fermi level of the oxide film,which increases the photovoltage of the *** best performance of the DSSC is found when the ratio of TiO2/luminescence powder is 1/3 in the luminescence *** simulated solar irradiation of 100 mW cm-2 (AM 1.5),the DSSC containing TiO2:(Er3+,Yb3+) doping achieves a light-to-electricity energy conversion efficiency of 7.28% compared with 6.41% for the undoped DSSC.

关键词：染料敏化太阳能电池上转换发光二氧化钛粉末二氧化钛纳米晶应用能量转换效率费米能级最佳性能