检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

高性能、光冲击稳定的钙钛矿室内光伏器件

Science Bulletin 2024年第3期69卷 334-344页

作者：李宸孙浩轩王旻甘山豆达李亮 School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsCenter for Energy Conversion Materials&Physics(CECMP)Soochow UniversitySuzhou 215006China

Perovskite solar cells offer great potential as a sustainable power source for distributed electronic devices that operate indoors.However,the impact of advanced lighting technology,especially the widely used pulse width modulation(PWM)technology,on perovskite photovoltaics has been ignored.Herein,for the first time in photovoltaics,we find that the light impact emitted by the PWM lighting system caused dynamic strain in perovskite thin films,induced phase separation,and accelerated the generation of metallic lead(Pb^(0))defects,leading to irreversible degradation of the cell performance after 27 h(T_(80)).To address this issue,formamidinium triiodide(FAI_(3))is chosen to treat the surface of the perovskite and release residual stress,resulting in reduced lattice deformation during dynamic strain processes.Meanwhile,it suppresses harmful Pb0 defects and reduces Voc loss at low light intensity.The champion device achieves impressive power conversion efficiency(PCE)of 35.14%and retains 99.5%of the initial PCE after continuous strobe light soaking for 2160 h.

关键词： Perovskite solar cells Indoor photovoltaics Interface engineering Micro-strain releasing

双面钙钛矿太阳能电池:不局限于反射利用的通用组件

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2023年第19期68卷 2247-2267,M0004页

作者：甘山孙浩轩李宸豆达李亮 School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsCenter for Energy Conversion Materials&Physics(CECMP)Soochow UniversitySuzhou 215006China

双面钙钛矿太阳能电池能够充分利用环境的反射和散射光,从而提高光伏电站的能量产量,并为建筑-光伏一体化提供更出色的美学设计,然而,双面电池的潜力不仅限于这些传统应用,它还可以作为子组件用于构建叠层电池,或与光子工程材料相结合,... 详细信息

双面钙钛矿太阳能电池能够充分利用环境的反射和散射光,从而提高光伏电站的能量产量,并为建筑-光伏一体化提供更出色的美学设计,然而,双面电池的潜力不仅限于这些传统应用,它还可以作为子组件用于构建叠层电池,或与光子工程材料相结合,实现单结电池的全光谱能量利用.本综述从双面钙钛矿太阳能电池的结构入手,主要介绍了其在反射利用、半透明电池和叠层电池等方面的潜在应用,同时指出了目前面临的一些挑战,如稳定性、大面积制备、背电极载流子复合和铅毒性等问题.此外,通过详细介绍双面钙钛矿太阳能电池的设计策略和应用场景,本综述展示了光伏器件采用双面结构后所带来的巨大优势,引领了通过双面结构来提升单结性能的研究方向,为钙钛矿光伏产业化开辟了新的发展路径.

关键词：钙钛矿太阳能电池叠层电池光伏电站半透明电池背电极载流子复合光伏器件美学设计

Strong Coupling of Light with Extremely thin Non-Close-Packing Colloidal Crystals:Experimental and Theoretical Studies

在线全文

学校读者我要写书评

暂无评论

Chinese physics Letters 2013年第4期30卷 217-220页

作者：黄忠董雯 department of physics and jiangsu key laboratory of thin films Soochow UniversitySuzhou 215006

Single and double layers of non-close-packing silica colloidal crystals are prepared using the self-assembly and chemical etching methods.A modulation of size reduction of 21%of silica particles is reported while sustaining the ordering of the structures.As a result of the coupling between light and the two-dimensional(2D)photonic structures,several dips are clearly observed in the measured optical transmission spectra.With decreasing the dielectric particle size,the transmission dips undergo blue shifts and simultaneously become deep.The measured transmission spectra are in good agreement with the theoretical calculations by taking the energy dissipation of the semi-infinite dielectric substrate for the 2D photonic crystals.

关键词： spectra. methods. dielectric

Hydrophobic long alkyl chain organic cations induced 2D/3D heterojunction for efficient and stable perovskite solar cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第29期124卷 243-251页

作者： Xiang He Min Wang Fengren Cao Wei Tian Liang Li School of Physical Science and Technology Center for Energy Conversion Materials and PhysicsJiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China

Designing post-formed two-dimensional(2D)perovskite on the surface of three-dimensional(3D)perovskite with matched energy levels and high stability is crucial for improving the performance and stability of perovskite solar cells(PSCs).Herein,a long alkyl chain dodecylammonium bromide(DABr)was applied to react with excessive lead iodide(PbI_(2))on the grain boundary of metal halide perovskite preferentially,forming DA_(2)PbI_(4)(n=1)to constitute a clear 2D/3D heterojunction.The existence of heterojunction increases the intensity of the built-in electric field of the device to enhance carrier separation and extraction,and the amino group of dodecylammonium cation passivates defects,which jointly contribute to the improvement of the power conversion efficiency(PCE)from 20.35 to 21.81%.The long alkyl chain endows the 2D perovskite with good hydrophobic properties,improving the humidity and thermal stability of the device.The unencapsulated device can maintain 64%of its initial efficiency after 1065 h storage in ambient air.

关键词： Hydrophobic 2D/3D perovskite Heterojunction Solar cell Stability

The effects of current-path patterns on magnetotransport in spatially-confined structures by Monte Carlo simulation

在线全文

学校读者我要写书评

暂无评论

Chinese physics B 2009年第11期18卷 5061-5065页

作者：伍建春孙华李振亚 department of physics and jiangsu key laboratory of thin films Soochow University

Simulations are performed on clusters of finite size to study the effects of size and current-path structure on magnetotransport in spatially-confined samples. Magnetotransport networks are established and calculated based on fractal structures including Koch curves and percolation backbones extracted from regular lattices. The structure pattern of clusters is shown to play an important role in the magnetotransport behaviours by affecting the magnetore- sistance fluctuations due to spin disorder in the systems of small size, which suggests the possibility of controlling the magnetotransport by the design of current-path configurations.

关键词： magnetoresistance percolation magnetotransport network

温度诱导的梯度锡-铅基混合卤素钙钛矿光电探测器

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2023年第12期66卷 4697-4703页

作者：刘连松曹风人边刘康王孟孙浩轩李亮 School of Physical Science and Technology Center for Energy Conversion Materials&Physics(CECMP)Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China

无机锡(Sn)–铅(Pb)基混合卤素钙钛矿由于其宽的响应波长范围和高的热稳定性,比有机–无机复合铅基卤素钙钛矿更具有吸引力.为了进一步提高Sn–Pb基混合卤素钙钛矿器件的性能,有必要进一步操纵载流子分离和复合.本文提出了一种基于梯度... 详细信息

无机锡(Sn)–铅(Pb)基混合卤素钙钛矿由于其宽的响应波长范围和高的热稳定性,比有机–无机复合铅基卤素钙钛矿更具有吸引力.为了进一步提高Sn–Pb基混合卤素钙钛矿器件的性能,有必要进一步操纵载流子分离和复合.本文提出了一种基于梯度无机CsPb_(0.7)Sn_(0.3)I3的自驱动光电探测器.通过调节退火温度优化CsPb_(0.7)Sn_(0.3)I3基钙钛矿膜中Sn和Pb梯度分布的程度,最终,最优的梯度钙钛矿器件表现出高的响应度(0.18 A W^(−1)),大的比探测率(2.5×10^(12)Jones),和快的响应速率(58.9/42μs),与之前报道的大多数Sn–Pb混合或纯Sn钙钛矿光电探测器性能相当.器件性能的提高主要归因于梯度分布诱导的能带弯曲促进了光生载流子的分离和传输.

关键词： tin-lead halide perovskite gradient photodetector

The Effect of Inductively Coupled Discharge on Capacitively Coupled Nitrogen-Hydrogen Plasma

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2014年第4期16卷 352-355页

作者：张志辉吴雪梅宁兆元 School of physics Science and Technology Jiangsu Key Laboratory of Thin FilmsSoochow University

A novel technique to generate high-density plasma-called inductively coupled plasma （ICP）, enhanced capacitively coupled plasma （CCP）- is successfully developed. The plasma can be generated using different frequency configurations, such as ICP-enhanced single-frequency ca- pacitively coupled plasma （SFCCP） and dual-frequency capacitively coupled plasma （DFCCP）. The characteristics of the plasma in the following frequency combinations are mainly investigated using a Langmuir probe, SFCCP （60 MHz）, DFCCP （60 MHz, 13.56 MHz）, SFCCP （60 MHz） and inductively coupled plasma （13.56 MHz）, DFCCP （60 MHz, 13.56 MHz） and inductively coupled plasma （13.56 MHz）. In this letter, the nitrogen and hydrogen mixture gas discharge charac- teristics of different configurations are studied. After the analysis, we can acquire the electron temperature and ion density. Then, the effect of inductively coupled discharge on SFCCP and DFCCP can be summarized. In our preliminary investigations, the main results can be given as follows. ICP can make the density of SFCCP increase and the distribution of the electron temper- ature in a radial direction more uniform. In addition, ICP not only can make the ion density of DFCCP increase, but also can improve the radial uniformity. F^rther experiments may be needed to clarify the mechanism.

关键词： inductively coupled plasma capacitively coupled plasma ion density elec-tronic temperature

盐酸硫胺添加剂改善钙钛矿的成膜质量以制备高效的、湿度稳定的钙钛矿太阳能电池

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2022年第2期65卷 321-327页

作者：张鹏曹风人田维李亮 School of Physical Science and Technology Center for Energy Conversion Materials&Physics(CECMP)Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China

钙钛矿太阳能电池由于其特殊的性质引起了广泛关注.然而,钙钛矿层的不稳定性,尤其是水分不稳定性以及存在的缺陷,严重制约了钙钛矿电池的性能并限制了其商业化发展.在此,我们将盐酸硫铵(THM)添加剂掺入碘化铅(PbI_(2))前驱体中,使用两... 详细信息

钙钛矿太阳能电池由于其特殊的性质引起了广泛关注.然而,钙钛矿层的不稳定性,尤其是水分不稳定性以及存在的缺陷,严重制约了钙钛矿电池的性能并限制了其商业化发展.在此,我们将盐酸硫铵(THM)添加剂掺入碘化铅(PbI_(2))前驱体中,使用两步旋涂方法制备出了耐湿且高效的钙钛矿电池.这一策略可以使THM添加剂和PbI_(2)之间产生更好的相互作用,当与A位阳离子反应形成钙钛矿晶体时会产生能量势垒,从而形成更大的晶粒和质量更好的钙钛矿薄膜.通过优化THM添加剂的浓度,最佳的钙钛矿薄膜实现了湿度稳定性的提高以及陷阱态密度的降低.因此,相应的未封装器件实现了21.40%的能量转换效率,并在~50%湿度的空气环境中180小时后依旧保持其初始效率的92%以上.其优异性能主要归因于THM促进了晶体生长并钝化了钙钛矿薄膜中的缺陷.

关键词：钙钛矿太阳能电池能量转换效率钙钛矿薄膜盐酸硫胺商业化发展碘化铅晶体生长空气环境

叶绿素修饰的钒酸铋对光电化学水分解性能和稳定性的提升

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2022年第6期65卷 1512-1521页

作者：吕遵严孟林兴曹风人李亮 School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsCenter for Energy Conversion Materials&Physics(CECMP)Soochow UniversitySuzhou 215006China

钒酸铋表面缓慢的催化反应动力学严重阻碍了其在光电化学水分解领域的应用.基于此,我们通过覆盖多功能薄膜成功构建出无机/有机杂化光阳极以改善钒酸铋的光电化学性能.该薄膜包含梯度分布的钴离子和硅离子以及经过改性的叶绿素有机化合... 详细信息

钒酸铋表面缓慢的催化反应动力学严重阻碍了其在光电化学水分解领域的应用.基于此,我们通过覆盖多功能薄膜成功构建出无机/有机杂化光阳极以改善钒酸铋的光电化学性能.该薄膜包含梯度分布的钴离子和硅离子以及经过改性的叶绿素有机化合物.其中,存在于钒酸铋和叶绿素界面处的钴离子促进了光生空穴的传输,而光阳极表面的硅离子提升了器件的亲水性.进一步,该薄膜的存在有效降低了氧化反应的势垒,促进了光生载流子转移,同时能够抑制钒的流失并提高钒酸铋光阳极的稳定性.总地来说,经过修饰后的钒酸铋光阳极,测试中光电流密度在1.23 V_(RHE)下达到5.1 mA cm^(−2),起始电位负向移动350 mV.本文提供了一种通用且简便的无机/有机杂化电极的制备方案以提高器件的光电催化能力.

关键词： photoanode BiVO_(4) chlorophyll water splitting