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Journal of Energy Chemistry 2024年第8期95卷 357-363,I0008页

作者： Minghao Xia Ziwei Zheng Yanjie Cheng Chaoyang Wang Zhaozhen Cui Guodong Zhang Jinwei Gonga anyi mei Hongwei Han Michael Grätzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for OptoelectronicsKey Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of EducationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Key Laboratory of Flexible Electronics(KLoFE)&Institute of Advanced Materials(IAM) School of Flexible Electronics(Future Technologies)Nanjing Tech University(NanjingTech)Nanjing 211816JiangsuChina

The low-cost and easy large-scale fabrication advantages of printable mesoscopic perovskite solar cells(p-MPSCs)are overshadowed by their limited photovoltaic conversion efficiency(PCE).Here,we introduce the hydrazide derivative of 4-Hydroxybenzoylhydrazine(4-HBH)to improve the PCE of p-MPSCs by inducing enhanced defect *** carbonyl and hydrazine groups in hydrazide groups present strong interaction with *** hydroxyl group,as an electron donor group,increases the electron cloud density of the hydrazide group in 4-HBH under the conjugation of the benzene ring,and thus enhances its interaction with ***,the hydroxy group itself interacts with perovskite and passivates defects *** hydrazine agents can also reduce I2and suppress the loss of iodine in perovskite films,which inhibits the formation of iodine-related ***,p-MPSCs with 4-HBH achieve a high PCE of 19.21%,and present well improved stability.

关键词： Printable mesoscopic perovskite solar cells Multifunctional hydrazine derivatives Cooperative coordination Conjugation redox activity

Stabilizing perovskite precursors with the reductive natural amino acid for printable mesoscopic perovskite solar cells

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Journal of Energy Chemistry 2024年第3期90卷 32-39,I0003页

作者： Wenjing Hu Jian Yang Chuang Yang Xufeng Xiao Chaoyang Wang Zhaozhen Cui Qiaojiao Gao Jianhang Qi Minghao Xia Yaqiong Su anyi mei Hongwei Han Michael Gratzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for OptoelectronicsKey Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education Huazhong University of Science and TechnologyWuhan 430074HubeiChina School of Chemistry Xi'an Key Laboratory of Sustainable Energy Materials ChemistryState Key Laboratory of Electrical Insulation and Power EquipmentXi'an Jiaotong UniversityXi'an 710049ShaanxiChina

Solution processability significantly advances the development of highly-efficient perovskite solar ***,the precursor solution tends to undergo irreversible degradation reactions,impairing the device performance and ***,we utilize a reductive natural amino acid,Nacetylcysteine(NALC),to stabilize the precursor solution for printable carbon-based hole-conductorfree mesoscopic perovskite solar *** find that I_(2) can be generated in the aged solution containing methylammonium iodide(MI) in an inert atmosphere and speed up the MA-FA^(+)(formamidinium) reaction which produces large-size cations and hinders the formation of perovskite *** effectively stabilizes the precursor via its sulfhydryl group which reduces I_(2) back to I^(-)and provides H^(+).The NALC-stabilized precursor which is aged for 1440 h leads to devices with a power conversion efficiency equivalent to 98% of that for devices prepared with the fresh ***,NALC improves the device power conversion efficiency from 16.16% to 18.41% along with enhanced stability under atmospheric conditions by modifying grain boundaries in perovskite films and reducing associated defects.

关键词： Perovskite solar cells Perovskite precursor Degradation Stabilization Reductive natural amino acid

Homogeneous permeation and oriented crystallization in nanostructured mesopores for efficient and stable printable mesoscopic perovskite solar cells

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Science China Chemistry 2024年

作者： Guodong Zhang Yanjie Cheng Tingting Niu Ziwei Zheng Zongwei Li Junwei Xiang Qiaojiao Gao Minghao Xia Lijuan Guo Yiming Liu Mengru Zhang Yiran Tao Xueqin Ran Mingjie Li Guichuan Xing Yingdong Xia Lingfeng Chao anyi mei Hongwei Han Yonghua Chen Key Laboratory of Flexible Electronics (KLoFE) and Institute of Advanced Materials (IAM) School of Flexible Electronics (Future Technologies) Nanjing Tech University Michael Gr?tzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education Huazhong University of Science and Technology Department of Physics The Chinese University of Hong Kong Department of Applied Physics The Hong Kong Polytechnic University Shenzhen Research Institute The Hong Kong Polytechnic University Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau

The low-cost and scalable printable mesoporous perovskite solar cells(p-MPSCs) face significant challenges in regulating perovskite crystal growth due to their nanoscale mesoporous scaffold structure, which limits the improvement of device power conversion efficiency(PCE). In particular, the most commonly used solvents, N,N-dimethylformamide(DMF) and dimethyl sulfoxide(DMSO), have a single chemical interaction with the precursor components and high volatility, which is insufficient to self-regulate the perovskite crystallization process, leading to explosive nucleation and limited growth within mesoporous scaffolds. Here, we report a mixed solvent system composed of methylamine formaldehyde(MAFa)-based ionic liquid and acetonitrile(ACN) with the strong C=O–Pb coordination and N–H···I hydrogen bonding with perovskite components. We found that the mixed solvent system is beneficial for the precursor solution to homogeneously penetrate into the mesoporous scaffold,and the strong C=O–Pb coordination and N–H···I hydrogen bonding interaction can promote the oriented growth of perovskite crystals. This synergistic effect increased the PCE of the p-MPSCs from 17.50% to 19.21%, which is one of the highest records for p-MPSC in recent years. Additionally, the devices exhibit positive environmental stability, retaining over 90% of the original PCE after 1,200 h of aging under AM 1.5 illumination conditions at 55 °C and 55% humidity.

关键词：

Unveiling the effect of amino acids on the crystallization pathways of methylammonium lead iodide perovskites

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Journal of Energy Chemistry 2022年第6期31卷 253-260,I0008页

作者： Wenhao Zhang Jiankang Du Weihua Zhang Yanmeng Chu anyi mei Yaoguang Rong Xinyu Gao Hongwei Han Yue Hu Michael Grätzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for OptoelectronicsKey Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of EducationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Shanghai Synchrotron Radiation Facility(SSRF) Chinese Academy of SciencesShanghai 201204China

Multifunctional additives are widely used to improve crystallization and to passivate defects in perovskite solar cells. The roles of these additives are usually related to the various functional groups contained in such additives. Here, we introduce a serious of analogues of amino acids into methylammonium lead iodide perovskites and find they play different roles in the crystallization process despite the fact that these additives share exactly the same terminal groups, namely one amino group and one carboxyl group. The corresponding crystallization pathways are established for the first time via monitoring the time-resolved phase formation and transformation. We find that avoiding the rapid formation of perovskites from precursor solution can facilitate the uniform nucleation and growth of perovskite crystals with enhanced crystallinity and reduced defects. Further, we find the different crystallization behaviors probably arise from the inherent structural characteristic of these additives, leading to different interactions in the precursors. This study unveils the effects of amino acids on the liquid–solid crystallization process and helps better understand the role of multifunctional additives beyond their functional groups.

关键词： Perovskite solar cells Multifunctional additives Amino acids Crystallization process

Influence of precursor concentration on printable mesoscopic perovskite solar cells

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Frontiers of Optoelectronics 2020年第3期13卷 256-264页

作者： Shuangquan JIANG Yusong SHENG Yue HU Yaoguang RONG anyi mei Hongwei HAN Michael Gratzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China

Over the last decade,the power conversion efficiency of hybrid organic-inorganic perovskite solar cells(PSCs)has increased dramatically from 3.8%to 25.2%.This rapid progress has been possible duc to the accurate control of the morphology and crystallinity of solution-processed perovskites,which are significantly affected by the concentration of the precursor *** study explores the influence of precursor concentrations on the performance of printable hole-conductor-free meso-scopic PSCs via a simple one-step drop-coating *** results reveal that lower concentrations lead to larger grains with inferior pore flling,while higher concentra-tions result in smaller grains with improved pore *** concentrations ranging from 0.241.20M,devices based on a moderate strength of 0.70M were confirmed to exhibit the best efficiency at 16.32%.

关键词： printable perovskite solar cell(PSC) precur-sor concentration crystallization morphology

醋酸铅添加剂在印刷钙钛矿太阳能电池中的应用

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无机材料学报 2022年第2期37卷 197-203页

作者：明月胡玥梅安意荣耀光韩宏伟华中科技大学武汉光电国家研究中心武汉430074 深圳职业技术学院深圳518055

印刷钙钛矿太阳能电池采用无机介孔骨架包覆有机无机杂化钙钛矿材料的器件结构,制备工艺简单,原材料成本低廉,且稳定性优异。然而,在介孔骨架中均匀沉积高质量的钙钛矿材料存在一定困难。本研究通过在典型钙钛矿材料甲胺铅碘(MAPbI_(3)... 详细信息

印刷钙钛矿太阳能电池采用无机介孔骨架包覆有机无机杂化钙钛矿材料的器件结构,制备工艺简单,原材料成本低廉,且稳定性优异。然而,在介孔骨架中均匀沉积高质量的钙钛矿材料存在一定困难。本研究通过在典型钙钛矿材料甲胺铅碘(MAPbI_(3))前驱液中引入醋酸铅(Pb(Ac)_(2))作为添加剂,加快钙钛矿晶体的成核从而改善其在介孔骨架中的生长和填充。同时,Ac^(–)与MA^(+)所形成的MAAc在热退火过程中逃逸可使得所沉积的钙钛矿光活性层中PbI_(2)略微过量,达到钝化晶界的作用。添加摩尔分数1%Pb(Ac)_(2)的钙钛矿前驱液所制备的印刷钙钛矿太阳能电池的光电转换效率达到15.42%,表明引入添加剂调控钙钛矿光活性层结晶质量是提升印刷钙钛矿太阳能电池性能的有效途径。

关键词：有机无机杂化钙钛矿太阳能电池醋酸铅结晶调控成核生长

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全固态介观太阳能电池:从染料敏化到钙钛矿

化学学报 2015年第3期73卷 237-251页

作者：荣耀光梅安意刘林峰李雄韩宏伟格兰泽尔介观太阳能电池研究中心武汉光电国家实验室(筹)华中科技大学湖北武汉430074

介观太阳能电池(Mesoscopic Solar Cells)作为新一代太阳能电池的突出代表,具有原材料来源丰富,制备工艺简单,光电转换效率高等优点,从而具有广阔的应用前景.本工作简要评述了全固态介观太阳能电池从染料敏化太阳能电池(Dye-sensitized ... 详细信息

介观太阳能电池(Mesoscopic Solar Cells)作为新一代太阳能电池的突出代表,具有原材料来源丰富,制备工艺简单,光电转换效率高等优点,从而具有广阔的应用前景.本工作简要评述了全固态介观太阳能电池从染料敏化太阳能电池(Dye-sensitized solar cells)发展到钙钛矿太阳能电池(Perovskite solar cells)过程中新材料、新技术和新概念的研究进展.1998年,Gr?tzel课题组首次将固态有机空穴传输材料spiro-OMeTAD应用到染料敏化太阳能电池中,制备出全固态染料敏化太阳能电池,虽然仅获得了0.74%的光电转换效率,但是却使得全固态染料敏化太阳能电池迅速发展成为介观太阳能电池的重要研究方向.2012年,Park与Gr?tzel课题组合作,使用钙钛矿型吸光材料(CH3NH3)PbI3作为敏化剂,spiro-OMeTAD作为空穴收集层,制备出光电转换效率达到9.7%的全固态介观太阳能电池,又被称为钙钛矿太阳能电池.自此,基于钙钛矿材料的介观太阳能电池迅速成为太阳能电池领域的研究热点.目前,钙钛矿太阳能电池的最高公证效率已经达到20.1%.钙钛矿太阳能电池作为介观太阳能电池商业化道路上里程碑式的突破,在材料开发、界面优化以及器件稳定性方面的研究仍充满挑战,也期待新的突破.

关键词：介观太阳能电池全固态染料敏化钙钛矿对电极

SiO2 nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

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Chinese Physics B 2020年第7期29卷 576-582页

作者：梁泽荣杨兵初梅安意林思远韩宏伟袁永波谢海鹏高永立周聪华 Hunan Key Laboratory of Super-microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China Michael Grä tzel Center for Mesoscopic Solar CellsWuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Department of Physics and Astronomy University of RochesterRochesterNY 14627USA

SiO2 nanoparticles were used to regulate the crystallizing process of lead halide perovskite films prepared by the sequential deposition method,which was used in the low-temperature-processed,carbon-electrode-basing,hole-conductor-free planar perovskite solar *** was observed that,after adding small amount of SiO2 precursor(1 vol%)into the lead iodide solution,performance parameters of open-circuit voltage,short-circuit current and fill factor were all upgraded,which helped to increase the power conversion efficiency(reverse scan)from 11.44(±1.83)%(optimized at 12.42%)to 14.01(±2.14)%(optimized at 15.28%,AM 1.5G,100 mW/cm^2).Transient photocurrent decay curve measurements showed that,after the incorporation of SiO2 nanoparticles,charge extraction was accelerated,while transient photovoltage decay and dark current curve tests both showed that recombination was *** improvement is due to the improved crystallinity of the perovskite film.X-ray diffraction and scanning electron microscopy studies observed that,with incorporation of amorphous SiO2 nanoparticles,smaller crystallites were obtained in lead iodide films,while larger crystallites were achieved in the final perovskite *** study implies that amorphous SiO2 nanoparticles could regulate the coarsening process of the perovskite film,which provides an effective method in obtaining high quality perovskite film.

关键词： perovskite solar cell carbon-electrode crystallization low temperature SiO2 lead iodide

超越传统光伏:弱光环境下可印刷介观钙钛矿太阳能电池光电特性

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科学通报 2020年第36期65卷 4272-4280页

作者：李达管焱俊李代宇褚衍盟邹阳万宇坤梅安意荣耀光胡玥韩宏伟华中科技大学武汉光电国家研究中心武汉430074

钙钛矿太阳能电池(perovskite solar cell,PSC)近年来发展十分迅速,被认为是下一代光伏技术中最有前景的候选者之一.其中,基于三层介孔膜结构的可印刷介观PSC以其廉价的原材料、简单的制备工艺以及良好的器件稳定性获得了广泛关注.本文... 详细信息

钙钛矿太阳能电池(perovskite solar cell,PSC)近年来发展十分迅速,被认为是下一代光伏技术中最有前景的候选者之一.其中,基于三层介孔膜结构的可印刷介观PSC以其廉价的原材料、简单的制备工艺以及良好的器件稳定性获得了广泛关注.本文测试了可印刷介观PSC小型模组(10 cm×10 cm)在不同光照强度条件下的光电性能,并与商用的单晶硅(crystalline silicon,c-Si)、多晶硅(polycrystalline silicon,poly-Si)和碲化镉(CdTe)太阳能电池进行了对比.结果表明,随着光照强度的降低,c-Si、poly-Si、CdTe太阳能电池的光电转换效率(power conversion efficiency,PCE)均出现了不同程度的下降,而可印刷介观PSC的PCE几乎呈线性增加.当光照强度低于0.3个标准太阳光(30 mW cm^(–2))时,可印刷介观PSC已经开始展现出一定的光电转换效率优势;当光照强度进一步降低至标准室内弱光条件(1000 lux,约0.3 mW cm^(–2))时,其PCE可达19.83%,高于其他商用太阳能电池.PSC在弱光环境下展现出的优异性能为进一步扩展其在室内等场景的应用奠定了良好基础,这些潜在的新兴应用领域为PSC的商业化和大规模生产提供了多种应用空间.

关键词：钙钛矿太阳能电池弱光室内环境光电转换

不同免疫检验法对乙肝病毒感染血清标志物检验效果的影响

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医学信息 2024年第15期37卷 142-145页

作者：杨伦辉戴红妹安义县疾病预防控制中心检验科安义县人民医院检验科

目的研究不同免疫检验法对乙肝病毒感染血清标志物检验效果的影响。方法以2020年6月-2023年6月安义县人民医院收治的60例疑似乙肝患者为研究对象，分别采用化学发光免疫分析法(CLIA)与酶联免疫吸附试验(ELISA)检测患者的血清标志物[... 详细信息

目的研究不同免疫检验法对乙肝病毒感染血清标志物检验效果的影响。方法以2020年6月-2023年6月安义县人民医院收治的60例疑似乙肝患者为研究对象，分别采用化学发光免疫分析法(CLIA)与酶联免疫吸附试验(ELISA)检测患者的血清标志物[乙肝表面抗原(HBsAg)、乙肝表面抗体(HBsAb)、乙肝e抗原(HBeAg)、乙肝e抗体(HBeAb)、乙肝核心抗体(HBcAb)]，比较两种检验方式对乙肝的诊断效能及对乙肝血清标志物的阳性检出率，统计其对不同乙肝分型的诊断准确率。结果 CLIA对乙肝的诊断敏感度、准确度、特异度高于ELISA (P0.05)。CLIA对乙肝小二阳和乙肝恢三阳的诊断准确率高于ELISA(P0.05)。结论 CLIA与ELISA在乙肝诊断中具有确切应用价值，其中CLIA诊断效能较高，其对血清标志物的检出效果更为理想。

关键词：乙肝血清标志物化学发光免疫分析法酶联免疫吸附试验乙肝表面抗原