【摘 要】
：
In spite of high efficient dye-sensitized solar cells (DSCs), 1 the usage of organic solvents is a problem not only because easy evaporation but more importantly, the toxicity.Water as an earth-abunda
【机 构】
：
State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Hubei,43
论文部分内容阅读
In spite of high efficient dye-sensitized solar cells (DSCs), 1 the usage of organic solvents is a problem not only because easy evaporation but more importantly, the toxicity.Water as an earth-abundant resource and clean solvent is an ideal candidate for the preparation of the electrolytes.After the successful development of aqueous DSCs with more than 5％efficiency,2 a more promising DSC based on an aqueous gel electrolyte was developed with comparable efficiency of 4％ and much better stability.A dramatic improved efficiency of 5.6％ was achieved by applying silane capping technique in the solar cell fabrication due to both increase of open circuit voltage and short circuit current.
其他文献
Thin-film photovoltaics based on organic-inorganic hybrid perovskite light absorbers have recently emerged as a promising low-cost solar energy harvesting technology.We will discusses the development
钙钛矿太阳能电池中光生电子的复合、传输和收集对其性能产生重要的影响.目前,TiO2是钙钛矿太阳能电池的首选电子传输层,TiO2晶体结构、缺陷、大小及形貌对钙钛矿光吸收层所产生的光生电子的复合、传输和在阴极上收集都将产生重要影 响.最近张文华等研究发现TiO2的纳米结构和厚度对钙钛矿太阳能电池产生重要影响,较短的纳米柱的TiO2产生更好的效率.本工作以时间分辨光致发光谱研究钙钛矿电池中电子传输层Ti
有机无机杂化钙钛矿太阳能电池自2009[1]年出现至今迅速发展,效率突破20％[2],成为太阳能光伏领域受人瞩目的热门研究方向.有研究表明,钙钛矿活性层结构、形貌、晶粒尺寸,取向等属性直接影响器件中光生载流子传输与复合情况[3-4],进而最终影响器件效率.我们通过有效控制活性层制备条件,制备获得具有不同形貌特征以及晶粒尺寸的钙钛矿活性层(如图1),并制备器件表征性能,为后续光电转换相关机理研究打好
Perovskite solar cells employing organolead halide perovskites (CH3NH3PbX3, X=I, Br,Cl) have attracted considerable attention due to their unique properties such as long electron-hole diffusion length
We studied the influence of different mask apertures on the open-circuit voltage measurement of perovskite solar cells.Aperture masks with different sizes were equipped to control the proportion of da
将热电材料注入钙钛矿太阳能电池电子传输层与钙钛矿吸收层界面之间,获得载流子浓度梯度可控、载流子迁移率高的热电功能有机卤化物钙钛矿太阳能电池薄膜.完成钙钛矿碘化铅甲胺太阳能电池器件组装与光电转换效率测试.得到理想太阳能转换效率的有基卤化物钙钛矿材料.基于钙钛矿太阳能电池中光阳极界面电化学过程模型,对钙钛矿太阳能电池的工作进行详细的模拟,理论预报电池内部各种载流子浓度的分布和有效载流子迁移率、界面厚度
A morphology-controlled CH3NH3PbI3-xClx film is synthesized via two-step solution deposition by spin-coating a mixture solution of CH3NH3Cl and CH3NH3I onto the TiO2/PbI2 film for the first time.1 It
有机太阳电池与钙钛矿型太阳电池可以有效将光能转换成为电能,同时具有低成本、柔性等优点,因此有望解决人类面临的能源与环境问题.为实现高性能钙钛矿或有机太阳电池,界面修饰与器件结构设计非常重要.在此,我们将介绍我们课题组在钙钛矿太阳电池界面修饰和高效叠层结构的有机太阳电池器件结构设计等方面的研究进展.
界面缓冲层为钙钛矿型太阳能电池中极其重要的环节之一,针对电池的效率和稳定性,我们一方面合成了一种含有冠醚的富勒烯材料,研究表明该材料适合作为宽带隙、窄带隙及钙钛矿活性层的阴极缓冲层;另一方面,引入了PCBM\C60\LiF三叠层阴极缓冲层,电池效率和稳定性具有显著提高.另外,我们发展了一种溶剂退火的方法,完全避免了加热退火,结果表明,器件效率与热退火法制备的钙钛矿型太阳能电池相比大大提高.
The new generation battery which can harvest energy from sunlight and chemically store energy that make energy storage and transportation more flexible, are of great significance for energy recycling