共查询到20条相似文献,搜索用时 78 毫秒
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基于ABX3晶体结构材料的新型钙钛矿太阳能电池具有光电转换效率高、可溶液加工以及低温工艺兼容等优势。与此同时,利用钙钛矿材料合成方法简单、带隙可调以及膜厚和透过率可控等优点制备的半透明钙钛矿太阳能电池为薄膜光伏的发展带来了新的契机,在建筑集成光伏和叠层光伏等领域应用前景广阔。开发高效且高稳定的半透明钙钛矿太阳能电池已成为目前光伏领域的研究重点。本文系统综述了半透明钙钛矿太阳能电池的各功能层(钙钛矿光活性层、电荷传输层和电极)材料选择、光学特性调控、电学特性优化以及制备工艺调控等技术策略,同时提出了对半透明钙钛矿太阳能电池未来发展的一些展望。 相似文献
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采用表面光电压谱法(SPS)对乙酰雨酮-5,10,15,20-四-对氯苯基卟啉稀土配合物Ln(p-Cl)TPPacac和卟啉配体进行了研究,并对谱带的归属和光电压产生的机制进行了探讨。发现配合物的光伏响应明显小于配体的光伏响应,且随中心离子的不同,其响应也不同。在配合物的SPS谱中,除了可看到由配体B带和Q带吸收所产生的谱带以外,在300~350nm区出现了一明显的光伏响应带,随稀土中心离子(4f电子数)不同,此光伏响应强度也不同,且随4f电子数而呈规律性的变化。这个谱带可能是由π-π(N带)跃迁产生的。 相似文献
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提出了用一种新的有机物-聚合物复合体薄膜制备受体给体聚合物光伏电池的思路,用于克服由于激子或极化子扩散范围短而熄灭造成的电荷分离与传输效率低的缺陷.在采用对称N,N′-二苯并咪唑3,4,9,10-四羧酸二亚酰胺和聚(2,5-二十五烷氧基对-苯撑乙烯)(ROPPV)为原材料制备成复合体薄膜,对其电学、光学及用其制作的光伏电池的性能进行了讨论.结果显示了导电聚合物-有机物复合体可代表一类新的有机半导体材料用于制造光伏电池
关键词:
有机光伏电池
有机染料
共轭聚合物
异质结 相似文献
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介绍了聚光光伏系统的发展历史和研究现状。对聚光光伏系统中的主件一聚光器和光伏电池进行了详细分类,给出了它们的特点和主要参数。描述了国外一些厂家为提高光伏系统效率并降低成本而研制的太阳跟踪系统。总结出聚光光伏系统的发展趋势,主要是指高倍聚光器+跟踪系统和低倍大角度聚光器+分光元件+多节电池等。最后就目前状况提出了聚光光伏系统商业化还需要解决的问题。 相似文献
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为加强对美国光伏市场情况的研究,对美国太阳能资源、光伏装机、光伏系统价格、光伏相关政策等资料进行了收集整理,并对美国光伏行业的发展前景进行了分析。参考美国能源部、太阳能学会等提供的光伏行业相关资料,对美国光伏行业概况进行概括梳理;通过查找光伏政策相关资料并与美国投资银行、光伏项目开发商进行座谈,对影响美国光伏行业的投资信用补贴、可再生能源配额标准等政策进行介绍;最后,结合美国太阳能学会研究成果,对美国光伏行业的发展前景提出预期。在美国光伏补贴政策的影响下,美国光伏装机截止2016年已超过40 000 kW,世界排名第四位,预计2018年光伏装机增长将放缓,2019-2022年光伏装机增长将逐步加快。 相似文献
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有偏压的光伏光折变晶体中屏蔽光伏孤子的自偏转 总被引:5,自引:2,他引:3
修正了有偏压的光伏光折变晶体中屏蔽光伏孤子的理论。用微扰法研究了屏蔽光伏孤子的自偏转,得出孤子光呸中心的运动为抛物线,并且空间频率分量随传播距离而线性移动,改变外偏压或旋转光的偏振方向可以控制其自偏转。当光伏效应可忽略时,屏蔽光伏孤子的非线性波动方程就转化为屏蔽孤子的非线性波动方程,它的自偏转就转化为屏蔽孤子的自偏转。当外偏压为零时,屏蔽光伏孤子的非线性波动方程就转化为光伏孤子的非线性波动方程,它的自偏转证明了光伏孤子中也存在着自偏转。 相似文献
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为了解决面临保障任务时,我军现有保障设备对武器装备故障检测周期过长以及测试资源在测试周期中被单个故障装备长时间占用的问题,对基于云测试(Cloud Testing)的自动测试系统(ATS,Automatic Test System)的体系架构进行了研究。以软件可移植性、硬件可互换性和系统互操作性为设计原则,对面向信号测试领域的云测试系统的体系架构进行了分析;在充分研究现有ATS的体系架构及其存在的突出问题的基础上,提出了基于云测试的ATS的软、硬件模型。为构建基于云测试的自动测试系统的开发和相关关键技术的研究提供了以有益的借鉴并打下了坚实的基础。 相似文献
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V. A. Morozov N. D. Chuvylkin E. A. Smolensky 《Russian Journal of Physical Chemistry B, Focus on Physics》2015,9(6):825-832
The formalism and the results of modeling the population dynamics of the states of a three-level model molecule by using the optical Bloch equations are compared with the formalism and results of modeling the population dynamics of the states of the molecule–radiation field system by means of quantum electrodynamics. Examples of significant differences between the results of application of these approaches regarding the behavior of the time dependences of the populations of the states of the molecule, the values of the quantum yield of the photoreaction or the intensity of Rayleigh and resonance Raman scattering are given. These differences are the greater, the higher the rate of the radiative decay of the resonantly excited state with the transition of the molecule to the ground state as compared to the rate of the decay of this state with the transition of the molecule to the third molecule (undecaying) state. 相似文献
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A theory of the nonresonant response of a single atom in a state with arbitrary magnitude and direction of the angular momentum
of an atomic electron with respect to the polarization vector of the acting electromagnetic field has been developed. It has
been shown that the atomic response current has a tensor structure and depends both on the direction of the angular momentum
of the atom and on the polarization vector of the external field. The tensor character of the response is due to the effects
of the anisotropy of probability density distribution of the atomic electron as compared to the case of the free atom. The
selection rules for the axisymmetric problem of the atom in the field have been analyzed. The manifestation of the selection
rules in the angular spectra of photoelectrons has been demonstrated. The probability of the ionization of the atom has been
analyzed as a function of the amplitude and duration of the pulse. It has been shown that the width of the generation spectrum
is a nonlinear function of the field strength and is saturated in the region of nearly atomic fields. Methods for controlling
the parameters of the atomic response spectrum have been proposed on the basis of the use of a sequence of laser pulses with
various time profiles, carrier frequencies, and polarization states. It has been shown that the generation of terahertz radiation
is possible in the preionization regime, where the generation mechanism is attributed to atomic nonlinearity. 相似文献
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The possibility of the aberration-free reconstruction of a synthesized hologram-Fresnel projector in the case when the angles
of incidence of the reconstructing plane wave exceed the angle of incidence of the plane reference wave during hologram synthesis
is shown. The character of the dependence of admissible angles of incidence of the reconstructing wave on the parameters of
the synthesis of hologram projectors is revealed and described mathematically. The results of an experimental study that confirms
the possibility of the aberration-free reconstruction of hologram projectors at angles of incidence of the reconstructing
plane wave that exceed the angle of incidence of the reference wave of the plane are presented. The results of the successful
implementation of the projection photolithography process using a synthesized relief-phase reflection hologram-Fresnel projector
are demonstrated. 相似文献
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在脉冲电路设计中,需要根据实际应用的波形要求和负载特性选择、设计其电路构型。工程设计中常用的时域波形叠加和参数扫描等波形构型设计方法存在较大局限性,难以形成对脉冲波形构型的物理本质、脉冲电路结构对负载的适应性等方面的系统认识。从分析影响脉冲波形构型的基本要素入手,从时域和频域角度对脉冲波形构型及其电路实现方法进行系统的分析和归纳,给出时域和频域的电路构型设计方法及相应的电路参数解算方法,使设计人员可采用解析分析方法判断电路中元器件参数的调整方向,同时推动电路设计创新。 相似文献
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S. I. Lysenko B. A. Snopok V. A. Sterligov E. V. Kostyukevich Yu. M. Shirshov 《Optics and Spectroscopy》2001,90(4):606-616
Specific features of the structure of self-assembled layers of dodecanthiol on the surface of polycrystalline films of gold are investigated with the aim of revealing the effect of the substrate relief on the lateral distribution and the predominant orientation of thiol molecules within the limits of the layer. The analysis of the angular dependence of quasi-elastically scattered light that takes into account the contributions of the geometric roughness of the surface and the inhomogeneity of the dielectric constant to scattering allowed us to establish the correlation in antiphase between the distribution of the thickness of the thiol coating and the height of the relief of the gold surface. The formation of a thiol layer on the surface of polycrystalline gold is a complex process including adsorption, local self-assembly, and a surface-induced distortion of the ordered structure in the regions of minima of the surface relief. The approach proposed here and based on the nondestructive analysis of thin organized coatings can be efficiently applied for the study of specific features of the topography and the prediction of chemical functionality of self-assembled molecular ensembles. 相似文献
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利用全量子理论,研究了多光子Jaynes-Cummings模型中与Glauber-Lachs态相互作用的混合态原子的信息熵压缩。讨论了相干平均光子数、热平均光子数、跃迁光子数、原子初态参量对原子信息熵压缩的影响。结果表明原子信息熵 分量没有熵压缩性质;相干平均光子数取值适当时,原子信息熵 分量呈现熵压缩效应;热平均光子数、跃迁光子数会破坏原子信息熵 分量的熵压缩效应;原子初态参量对原子信息熵 分量能否呈现熵压缩效应没有决定性作用;伴随双光子跃迁时,原子的熵压缩因子的时间演化曲线呈现周期性。 相似文献