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| 1 | Synergistic improvement of perovskite film quality for efficient solar cells via multiple chloride salt additives显示文摘Perovskite crystal film quality is critical for obtaining efficient perovskite solar cells. Anti-solvent processing was used for fast crystallization of perovskite precursor film, which can form dense perovskite film.However, the crystals from this method are usually small due to the fast crystal growth process, which could lead to grain boundary recombination. Here, element chloride is introduced to enhance the perovskite layer crystallinity via slowing down the perovskite crystallization process by simultaneous introduction of methylammounium chloride(MACl) and cesium chloride(CsCl) into precursor solution.As a result, we achieve high quality of pin-hole free perovskite film with large crystal size. A power conversion efficiency of 21.55% with free of hysteresis of the device is obtained, which is among the highest efficiency of planar structure perovskite solar cells. | Pengyang Wang Qi Jiang Yang Zhao Yong Chen Zema Chu Xingwang Zhang Yuqin Zhou Jingbi You | 2018 | Science Bulletin2018，63，11： | 6 |
| 2 | 钙钛矿单晶的合成研究进展显示文摘钙钛矿材料优异的光电性能使钙钛矿太阳能电池成为目前发展速度最快的光伏技术之一。近期的研究发现无晶界的单晶钙钛矿薄膜拥有更低的缺陷密度、更高的载流子迁移率、更长的载流子复合寿命,并且还有较高的稳定性和更宽的光吸收范围,因此有望制备出更高效且更稳定的钙钛矿太阳能电池。本文简要介绍了单晶钙钛矿太阳电池的基本结构及其发展历程,着重介绍了有关单晶钙钛矿薄膜和块状单晶钙钛矿的制备方法,并且对不同方法制备的单晶钙钛矿太阳能电池的效率进行了比较,最后对单晶钙钛矿太阳能电池当前存在的问题以及未来发展进行了简要分析和展望。 | 张汉宏 叶帅 张帆 | 2020 | 人工晶体学报2020，49，12： | 3 |
| 3 | 有机无机杂化钙钛矿电镜表征的虚与实显示文摘近年来,由于合成价格低廉以及光电转化效率高,基于有机无机杂化钙钛矿材料的太阳能电池得到了飞速发展.然而这些材料容易分解,这极大地限制了该技术的商业化应用.基于透射电子显微镜的表征有助于解析这些材料的降解机理.然而杂化钙钛矿材料对电子束辐照十分敏感,易引起结构失稳甚至分解,进而阻碍我们获取真实结构信息.本文利用低电子束剂量成像技术系统地研究了不同实验条件下杂化钙钛矿的结构不稳定性,揭示了最优的透射电镜表征条件.我们发现,低温(-180°C)并没有减缓束损伤,反而导致了快速的非晶化;较高的加速电压有利于降低损伤;MAPbI3(100)面比(001)面更稳定.基于这些发现,我们成功地获得了MAPbI3原始的原子结构,并确定了其表征窗口非常窄.这些发现有助于指导未来对这些电子束敏感材料的电子显微表征,也有助于寻找提高钙钛矿型太阳能电池稳定性的策略. | 陈树林 张颖 赵晋津 秘周 张敬民 曹健 冯吉才 张光磊 亓钧雷 李江宇 高鹏 | 2020 | Science Bulletin2020，65，19： | 3 |
| 4 | Polar or nonpolar?That is not the question for perovskite solar cells显示文摘Perovskite solar cells(PSC)are promising next generation photovoltaic technologies,and there is considerable interest in the role of possible polarization of organic-inorganic halide perovskites(OIHPs)in photovoltaic conversion.The polarity of OIHPs is still hotly debated,however.In this review,we examine recent literature on the polarity of OIHPs from both theoretical and experimental points of view,and argue that they can be both polar and nonpolar,depending on composition,processing and environment.Implications of OIHP polarity to photovoltaic conversion are also discussed,and new insights gained through research efforts.In the future,integration of a local scanning probe with global macroscopic measurements in situ will provide invaluable microscopic insight into the intriguing macroscopic phenomena,while synchrotron diffractions and scanning transmission electron microscopy on more stable samples may ultimately settle the debate. | Boyuan Huang Zhenghao Liu Changwei Wu Yuan Zhang Jinjin Zhao Xiao Wang Jiangyu Li | 2021 | National Science Review2021，8，8： | 1 |
| 5 | 单晶钙钛矿器件显示文摘Currently,perovskite solar cells(PSCs)based on polycrystalline absorbers reach a certified power conversion efficiency(PCE)of25.2%[1].However,the further advance of the PCE has been impeded by intrinsic defects located at the surface or grain boundaries of polycrystalline perovskite films[2–4]. | 李跃龙 丁黎明 | 2021 | Science Bulletin2021，66，3： | 1 |
| 6 | 钙钛矿光电子器件中光致/电致载流子动力学调谐工程显示文摘过去十年以来,具有非辐射复合损失低、载流子寿命和扩散长度长等优异特征的有机金属卤化物钙钛矿在光伏技术领域取得了长足进展.有机金属卤化物钙钛矿具有卓越的光学性能和易于制备的特征,其在电光和光电转换中得到广泛应用.本文讨论了光激发自由载流子、激子的复合和扩散动力学特性.这些动力学特性可以通过控制晶粒尺寸和晶界、抑制缺陷和界面电荷转移等多种方式进行控制.并且讨论了在电光和光电转换器件中'有效载流子'的共性和差异.在全光器件中,强的光与物质相互作用会导致非线性效应,如双光子吸收、自相位调制和光学漂白,从而实现高分辨率成像、光调制和波长转换.本综述为构建高性能光电器件提供了理论基础. | 张峰 秘周 郝伟仲 陈华龙 张俣乐 赵晋津 曹国忠 张晗 | 2022 | Science China Materials2022，65，4： | 1 |
| 7 | A review of geometry-confined perovskite morphologies:From synthesis to efficient optoelectronic applications显示文摘With the continuous study of metal halide perovskite,geometry-confined technologies have been widely applied to reduce the material dimensionality and to produce pre-designed structures,which can tune optical reflectance,scattering,and absorption,thereby optimizing the performance of perovskite-based optoelectronic devices and improving their commercial competitiveness.The morphologies of perovskite active layer play a pivotal role in optoelectronic properties and the resulting device performances.In this review,we systematically summarized recent progress in the preparation and manufacture of various perovskite geometry-confined morphologies,as well as their promising advances in different optoelectronic applications,including photodetectors,solar cells(SCs),lasers,and light-emitting diodes(LEDs).In addition,the remaining challenges and further improvements of preparation unique geometry-confined perovskite morphologies for next-generation high quality optoelectronic devices are discussed. | Jinshuai Zhang Perry Ping Shum Lei Su | 2022 | Nano Research2022，15，8： | 0 |
| 8 | 单晶钙钛矿的制备及应用研究进展(续)显示文摘3单晶钙钛矿的应用单晶钙钛矿作为一种优异的光电材料,广泛应用于光电探测器、太阳电池、光泵浦激发和辐射探测等光电子器件中。3.1光电探测器光电探测器是一种可以将光信号转变为电信号的装置,在图像感知、环境监测、导弹预警、生物检测和通信等很多领域应用广泛。 | 高娟 冀婷 李国辉 范明明 郝玉英 崔艳霞 | 2019 | 微纳电子技术2019，56，4： | 0 |
| 9 | 钙钛矿太阳能电池界面工程优化研究显示文摘有机-无机杂化钙钛矿太阳能电池(PSCs)具有高能量转换效率、低能耗和低成本等优点,但PSCs界面缺陷引起的非辐射复合严重阻碍了其光电转换性能提升。本研究通过降低氧化镍空穴传输层的粒径尺寸,提高粒径均匀性,实现了光生空穴在电池界面的高效传输;并通过优化钙钛矿薄膜的反溶剂作用时间提升结晶质量,降低界面非辐射复合,改善空穴传输层和钙钛矿的界面问题,使钙钛矿太阳能电池的能量转换效率(PCE)从10.11%提高到18.37%。开尔文探针力显微镜(KPFM)研究表明,界面优化后的钙钛矿薄膜在亮态下的表面接触电位差相比于暗态下增加了120.39 mV。采用压电力原子力显微镜(PFM)分析钙钛矿薄膜明暗态铁电性能,发现界面优化后的钙钛矿铁电极化变化微弱,说明优化界面有效降低了电池界面缺陷和迟滞效应。该研究结果表明,优化氧化镍空穴传输层,提高钙钛矿薄膜质量,减少了界面缺陷,降低了非辐射复合和电池迟滞效应,提高了钙钛矿太阳能电池的能量转换效率。 | 王烨 焦忆楠 郭军霞 刘欢 李睿 尚子璇 张士东 王永浩 耿海川 侯登录 赵晋津 | 2023 | 无机材料学报2023，38，11： | 0 |
| 10 | 井式氢气保护金刚石锯片烧结电阻炉显示文摘为适应金刚石锯片行业的烧结要求 ,提高炉温均匀度 ,采用了分区单独控温 ,配合选用高精度控温仪表调节及 PID晶闸管自整定自动控温 ,并采用氢气保护 ,达到了金刚石锯片烧结速度快 ,合格率高 ,能耗低的目的。 | 陶玉芳 | 2000 | 工业加热2000，29，1： | 0 |
| 11 | Improved efficiency and photo-stability of methylamine-free perovskite solar cells via cadmium doping显示文摘Although perovskite solar cells containing methylamine cation can show high power conversion efficiency,stability is a concern.Here,methylamine-free perovskite material Csx FA1–x PbI3 was synthesized by a one-step method.In addition,we incorporated smaller cadmium ions into mixed perovskite lattice to partially replace Pb ions to address the excessive internal strain in perovskite structure.We have found that the introduction of Cd can improve the crystallinity and the charge carrier lifetime of perovskite films.Consequently,a power conversion efficiency as high as 20.59%was achieved.More importantly,the devices retained 94%of their initial efficiency under 1200 h of continuous illumination. | Yong Chen Yang Zhao Qiufeng Ye Zema Chu Zhigang Yin Xingwang Zhang Jingbi You | 2019 | Journal of Semiconductors2019，40，12： | 0 |
| 12 | 空心板栗状MAPbI_(3)/TiO_(2)的制备及可见光下降解甲苯研究显示文摘首先,以TiCl_(4)为钛源,采用水热法制备空心板栗状TiO_(2)载体.然后,再以PbI_(2)及MAI(MA=CH_(3)NH_(3)^(+))为前驱体,采用溶液法在空心板栗状TiO_(2)上一步构筑MAPbI_(3)薄膜,形成空心板栗状MAPbI_(3)/TiO_(2)复合光催化剂.以甲苯为目标降解物,考察板栗状MAPbI_(3)/TiO_(2)在可见光下的催化降解性能,并对材料的能级结构进行分析,揭示材料的降解机理.结果表明:钙钛矿型MAPbI_(3)薄膜的组成及形貌与PbI_(2)和MAI投料比密切相关,随着投料比的增加,薄膜的成分由MAPbI_(3)和MAI两相变为纯MAPbI_(3),再转变MAPbI_(3)和PbI_(2)两相.能级匹配、结构特殊的板栗状MAPbI_(3)/TiO_(2)不仅可以降低光生电子和空穴的复合率,还能有效地将光生电子和空穴分别转移至MAPbI_(3)的导带及TiO_(2)价带,促进活性粒子·O_(2)^(-)和·OH的生成,因此在甲苯的降解中表现更优的性能.在可见光的照射下,MAPbI_(3)/TiO_(2)对甲苯的降解率在90 min内可高达98%. | 李荡 张杨 董玮 李远勋 顾怀章 党铭铭 | 2024 | 云南大学学报(自然科学版)2024，46，1： | 0 |
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