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A Multifunctional Polymer as an Interfacial Layer for Efficient and Stable Perovskite Solar Cells

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A Multifunctional Polymer as an Interfacial Layer for Effici...

The effect of grain orientation on the morphological stability of the organic-inorganic perovskite films under elevated temperature

第十届新型太阳能材料科学与技术学术研讨会

作者： Zhang Bingqian Chen Kezheng Cui Guanglei pang shuping College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences

Metal-cation defects and halogen-anion defects in perovskite film are critical to the efficiency and stability of perovskite solar cells(PSCs).In this work,a random polymer,poly(methyl methacrylate-co-acrylamide)(PMMA-AM),was synthesized to serve as an interfacial passivation layer for synergistically passivating the under-coordinated Pb and anchor the I-of the [PbI]octahedron.Additionally,the interfacial PMMA-AM passivation layer can not be destroyed during the hole transport layer deposition because of its low solubility in chlorobenzene.This passivation leads to an enhancement in the open-circuit voltage from 1.12 V to 1.22 V and improved stability in solar cell devices,with the device maintaining 95% of the initial power conversion efficiency(PCE) over 1000 h of maximum power point tracking.Additionally,a large-area solar cell module was fabricated using this approach,achieving a PCE of 20.64%.

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Journal of Semiconductors 2017年第1期38卷 54-59页

作者： Dong Wang Yue Chang shuping pang Guanglei Cui Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China

The fast developing perovskite solar cells shows high efficiency and low cost.However,the stability problem restricts perovskite from commercial use.In this work,we have studied the effect of grain orientation on the morphological stability of perovskite thin films.By tuning the inorganic/organic ratio in the precursor solution,perovskite thin films with both high crystallinity and good morphological stability have been fabricated.The thermal stability of perovskite solar cells based on the optimized films has been tested.The device performance shows no degradation after annealing at 100℃ for 5h in air.This finding provides general guidelines for the development of thermally stable perovskite solar cells.

关键词： perovskite solar cells morphological stability grain orientation

High-Performance Cobalt Selenide and Nickel Selenide Nanocomposite Counter Electrode for Both Iodide/Triiodide and Cobalt(II/III)Redox Couples in Dye-Sensitized Solar Cells

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Chinese Journal of Chemistry 2014年第6期32卷 491-497页

作者： Zaiwei Wang Hongxia Xu Zhongyi Zhang Xinhong Zhou shuping pang Guanglei Cui Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdaoShandong 266101China University of Chinese Academy of Sciences Beijing 100080China Qingdao University of Science and Technology QingdaoShandong 266101China

The nanocomposites of cobalt selenide and nickel selenide(Co_(0.85)Se/Ni_(0.85)Se)were successfully fabricated on FTO glass by a facile co-electrodeposition method at ambient temperature.Nanocomposite films were used as elec-trocatalysts in dye-sensitized solar cell counter electrodes for regeneration of both iodide/triiodide and cobalt(II/III)redox couples.Co_(0.85)Se/Ni_(0.85)Se were mainly composed of nanoflakes and nanoparticles.It is noted that such nanostructure generated by nanoparticles embedded with 2D nanoflakes led to high active sites and was accessible to cobalt(II/III)electrolyte,delivering better catalytic activity for the reduction of larger volume cobalt(II/III).As a result,for cobalt(II/III)electrolyte,the Co_(0.85)Se/Ni_(0.85)Se based dye-sensitized solar cell performed significantly im-proved efficiency than that of Pt and Co_(0.85)Se.Meanwhile,the Co_(0.85)Se/Ni_(0.85)Se based dye-sensitized solar cell held comparable energy conversion efficiency to that of Pt and Co_(0.85)Se for iodide/triiodide electrolyte.

关键词： counter electrode dye-sensitized solar cells iodide/triiodide cobalt(II/III) metal selenide

Formamidinium-incorporated Dion-Jacobson phase 2D perovskites for highly efficient and stable photovoltaics

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Journal of Energy Chemistry 2021年第6期30卷 632-638,I0015页

作者： Sajjad Ahmad Wei Yu Ruixue Lu Yang Liu Tonggang Jiu shuping pang Xin Guo Can Li State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101ShandongChina University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Fudan UniversityShanghai 200438China

Dion-Jacobson phase two-dimensional(DJ 2D)perovskites,recently attracting considerable interests,exhibit excellent environmental stability and structural tunability,but their solar cells still offer unsatisfactory power conversion efficiencies(PCEs).Herein,we develop DJ 2D perovskites employing formamidinium(FA+)as a ternary cation in the perovskite cages((PDA)(FA)x(MA)3-xPb4 I13,χ=0,0.15,0.3 and 0.6,PDA=1,3-propanediammonium)for highly efficient and stable perovskite solar cells(PSCs).We found that the DJ 2D perovskite with a 10%FA+fraction presents improved crystallinity,preferred vertical orientation,and longer charge carrier lifetime compared to that without FA+doping.As a result,the FAdoped DJ 2D PSCs exhibit a champion PCE of 14.74%with superior device stability.The unencapsulated devices sustain over 92%of its initial PCE after storage at a constant relative humidity(RH)of 65%for 6000 h,90%by heat at 85℃in air for 800 h,and 94%under 1-sun illumination for 5000 h.These findings demonstrate that the incorporation of FA cation into the DJ 2D perovskite is a promising strategy to develop highly efficient and stable DJ 2D PSCs.

关键词： Dion-Jacobson 2D perovskites Perovskite solar cells Formamidinium doping Power conversion efficiency

Improved interfacial property by small molecule ethanediamine for high performance inverted planar perovskite solar cells

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Journal of Energy Chemistry 2021年第3期30卷 467-474页

作者： Guodong Zhang Yunxin Zhang Siqi Chen Hao Chen Le Liu Wenming Ding Jinhui Wang Anyu Zhang shuping pang Xin Guo Lianqing Yu Tonggang Jiu School of Materials Science and Engineering China University of PetroleumQingdao 266580ShandongChina Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101ShandongChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023LiaoningChina

We report a simple and effective method to realize desirable interfacial property for inverted planar perovskite solar cells(PSCs)by using small molecule ethanediamine for the construction of a novel polyelectrolyte hole transport material(P3CT-ED HTM).It is found that P3CT-ED can not only improve the hole transport property of P3CT-K but also improve the crystallinity of adjacent perovskite film.In addition,the introduction of ethanediamine into P3CT realigns the conduction and valence bands upwards,passivates surface defects and reduces nonradiative recombination.As a consequence,compared to P3CT-K hole transport layer(HTL)based devices,the average power conversion efficiency(PCE)is boosted from17.2% to 19.6% for the counterparts with P3CT-ED,with simultaneous enhancement in open circuit voltage and fill factor.The resultant device displays a champion PCE of 20.5% with negligible hysteresis.

关键词： Improved interfacial property Inverted planar perovskite solar cells Passivated trap states Crystallinity Ethanediamine

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桑叶提取物在猪生产上的应用研究进展

养猪 2023年第3期 50-52页

作者：庞淑萍河南省周口市农业综合行政执法支队河南周口466000

本文综述了桑叶提取物在猪生产中的应用研究进展。桑叶提取物具有多种生物活性成分,包括抗菌、抗氧化、免疫调节和生长促进等作用。在猪生产中,桑叶提取物可以作为一种天然的饲料添加剂,用于改善猪的生长性能、提高免疫力、降低疾病发... 详细信息

本文综述了桑叶提取物在猪生产中的应用研究进展。桑叶提取物具有多种生物活性成分,包括抗菌、抗氧化、免疫调节和生长促进等作用。在猪生产中,桑叶提取物可以作为一种天然的饲料添加剂,用于改善猪的生长性能、提高免疫力、降低疾病发生率和减少抗生素的使用。本文对桑叶提取物的生物活性成分及其功能、桑叶提取物在猪生产中的应用和未来的研究方向进行了综述。

关键词：桑叶提取物猪生产生物活性成分应用

Inhibiting Ion Migration by Guanidinium Cation Doping for Efficient Perovskite Solar Cells with Enhanced Operational Stability

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Inhibiting Ion Migration by Guanidinium Cation Doping for Ef...

第九届新型太阳能材料科学与技术学术研讨会

作者： Zhipeng Li shuping pang Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Perovskite solar cells(PSCs) developed great potential to make photovoltaic power generation systems more cost effective ascribed to the high-power conversion efficiency, low material cost, and easy fabrication. Alloyed A-site cations surrounded by PbI octahedra play decisive roles in the crystal structure, band gap, and phase stability, as well as ion migration. Herein, based on the Temperature-dependent ion conductivity measurement, we systematically studied the activation energy for iodide ion migration with different proportions of guanidinium cation(GA+) substitution. We have found that partial GA+ doping could effectively suppress iodide ion migration. The triple-cation perovskite(MA FA GA PbI) PSCs achieved a power conversion efficiency(PCE) of 22.17% with superior operational stability maintaining 90% of its initial after 1200 h under continuous light soaking. Furthermore, we extended it to a mini perovskite solar modules(PSMs), 14 cm active area, and achieved a PCE of 19.18%.

关键词： guanidinium cation ion migration operational stability perovskite solar cells

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有限作用域的混沌粒子群优化算法

计算机工程与应用 2011年第12期47卷 39-42页

作者：庞淑萍哈尔滨金融学院基础部哈尔滨150030

针对粒子群可能会陷入局部极优值所导致的早熟问题,提出一种有限作用域的混沌粒子群优化方法。利用特定的初始分布涵盖全局最优值,利用混沌序列良好的非线性性质,影响粒子速度更新过程,增加粒子种群的多样性。以有限作用域外的粒子遍历... 详细信息

针对粒子群可能会陷入局部极优值所导致的早熟问题,提出一种有限作用域的混沌粒子群优化方法。利用特定的初始分布涵盖全局最优值,利用混沌序列良好的非线性性质,影响粒子速度更新过程,增加粒子种群的多样性。以有限作用域外的粒子遍历优化问题的可行域,增加粒子对可行域的广度搜索,以作用域内的粒子搜索最优值,提高全局最优值的精度搜索效率。数值实验表明提出的算法优于标准粒子群和传统的混沌粒子群,并能解决粒子群的早熟问题。

关键词： Logistic序列混沌粒子群优化有限作用域群智能

线上授课中教与学的适应性问题的实践探讨--以《概率论与数理统计》课程为例

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金融理论与教学 2020年第5期 106-108,118页

作者：庞淑萍哈尔滨金融学院基础部黑龙江哈尔滨150030

讨论了线上授课中解决教与学的适应性问题的方法。认为应该选择适合慕课,精心设计教学过程、认真组织教学,严格教学过程管理,促进学生自主学习。同时要多次实践和检验,确定考核方案,组织考核,加大课程思政。

关键词：在线教学直播过程管理课程设计