共查询到20条相似文献,搜索用时 31 毫秒
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Organic Solar Cells: On the Efficiency of Charge Transfer State Splitting in Polymer:Fullerene Solar Cells (Adv. Mater. 16/2014) 下载免费PDF全文
Steve Albrecht Koen Vandewal John R. Tumbleston Florian S. U. Fischer Jessica D. Douglas Jean M. J. Fréchet Sabine Ludwigs Harald Ade Alberto Salleo Dieter Neher 《Advanced materials (Deerfield Beach, Fla.)》2014,26(16):2607-2607
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Jiangjian Shi Xin Xu Dongmei Li Qingbo Meng 《Small (Weinheim an der Bergstrasse, Germany)》2015,11(21):2472-2486
The interfacial atomic and electronic structures, charge transfer processes, and interface engineering in perovskite solar cells are discussed in this review. An effective heterojunction is found to exist at the window/perovskite absorber interface, contributing to the relatively fast extraction of free electrons. Moreover, the high photovoltage in this cell can be attributed to slow interfacial charge recombination due to the outstanding material and interfacial electronic properties. However, some fundamental questions including the interfacial atomic and electronic structures and the interface stability need to be further clarified. Designing and engineering the interfaces are also important for the next‐stage development of this cell. 相似文献
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The recently emerged integrated perovskite/bulk-heterojunction (BHJ) organic solar cells (IPOSCs) without any recombination layers have generated wide attention. This type of device structure can take the advantages of tandem cells using both perovskite solar and near-infrared (NIR) BHJ organic solar materials for wide-range sunlight absorption and the simple fabrication of single junction cells, as the low bandgap BHJ layer can provide additional light harvesting in the NIR region and the high open-circuit voltage can be maintained at the same time. This progress report highlights the recent developments in such IPOSCs and the possible challenges ahead. In addition, the recent development of perovskite solar cells and NIR organic solar cells is also covered to fully underline the importance and potential of IPOSCs. 相似文献
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Danqin Li Lei Zhu Xianjie Liu Wei Xiao Jianming Yang Ruru Ma Liming Ding Feng Liu Chungang Duan Mats Fahlman Qinye Bao 《Advanced materials (Deerfield Beach, Fla.)》2020,32(34):2002344
Ternary architecture is one of the most effective strategies to boost the power conversion efficiency (PCE) of organic solar cells (OSCs). Here, an OSC with a ternary architecture featuring a highly crystalline molecular donor DRTB-T-C4 as a third component to the host binary system consisting of a polymer donor PM6 and a nonfullerene acceptor Y6 is reported. The third component is used to achieve enhanced and balanced charge transport, contributing to an improved fill factor (FF) of 0.813 and yielding an impressive PCE of 17.13%. The heterojunctions are designed using so-called pinning energies to promote exciton separation and reduce recombination loss. In addition, the preferential location of DRTB-T-C4 at the interface between PM6 and Y6 plays an important role in optimizing the morphology of the active layer. 相似文献
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Wu-Qiang Wu Peter N. Rudd Qi Wang Zhibin Yang Jinsong Huang 《Advanced materials (Deerfield Beach, Fla.)》2020,32(28):2000995
Currently, blade-coated perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs), that is, greater than 20%, normally employ methylammonium lead tri-iodide with a sub-optimal bandgap. Alloyed perovskites with formamidinium (FA) cation have narrower bandgap and thus enhance device photocurrent. However, FA-alloyed perovskites show low phase stability and high moisture sensitivity. Here, it is reported that incorporating 0.83 molar percent organic halide salts (OHs) into perovskite inks enables phase-pure, highly crystalline FA-alloyed perovskites with extraordinary optoelectronic properties. The OH molecules modulate the crystal growth, enhance the phase stability, passivate ionic defects at the surface and/or grain boundaries, and enhance the moisture stability of the perovskite film. A high efficiency of 22.0% under 1 sun illumination for blade-coated PSCs is demonstrated with an open-circuit voltage of 1.18 V, corresponding to a very small voltage deficit of 0.33 V, and significantly improved operational stability with 96% of the initial efficiency retained under one sun illumination for 500 h. 相似文献
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量子点敏化太阳能电池(Quantum Dot-Sensitized Solar cells, QDSCs)制备工艺简单, 制造成本低廉, 是一种有希望的新型太阳能电池。QDSCs利用量子点具有光谱吸收强、尺寸可调和多激子效应等优点, 能够提高其光电转换效率; 同时, 利用无机量子点替代染料作为敏化剂, 能够解决染料敏化太阳能电池(DSCs)的稳定性问题。但是, QDSCs光电转换效率较低是制约其应用的主要问题。近年来, 通过改变和调控对电极的材料和电子特性提高QDSCs的光电效率的方法受到了广泛关注。本文综述了QDSCs对电极材料的制备方法、微观形貌和晶体结构; 重点分析了金属化合物、复合材料、杂化材料、多元金属硫族化合物、导电聚合物和碳材料对电极对量子点敏化太阳能电池的电荷转移阻抗、光电性能等参数的影响; 并分析影响其电催化活性和电子传输性能的主要因素。最后, 提出通过表面修饰、复合和杂化等方法构筑新型对电极材料, 进而改善和提高QDSCs转换效率和稳定性, 是今后的研究重点和研究方向。 相似文献
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Solar Cells: Enhancing the Performance of the Half Tin and Half Lead Perovskite Solar Cells by Suppression of the Bulk and Interfacial Charge Recombination (Adv. Mater. 35/2018) 下载免费PDF全文
Shuyan Shao Yong Cui Herman Duim Xinkai Qiu Jingjin Dong Gert H. ten Brink Giuseppe Portale Ryan C. Chiechi Shaoqing Zhang Jianhui Hou Maria Antonietta Loi 《Advanced materials (Deerfield Beach, Fla.)》2018,30(35)
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Flexible All-Solution-Processed Organic Solar Cells with High-Performance Nonfullerene Active Layers
Lulu Sun Wenwu Zeng Cong Xie Lin Hu Xinyun Dong Fei Qin Wen Wang Tiefeng Liu Xueshi Jiang Youyu Jiang Yinhua Zhou 《Advanced materials (Deerfield Beach, Fla.)》2020,32(14):1907840
All-solution-processed organic solar cells (from the bottom substrate to the top electrode) are highly desirable for low-cost and ubiquitous applications. However, it is still challenging to fabricate efficient all-solution-processed organic solar cells with a high-performance nonfullerene (NF) active layer. Issues of charge extraction and wetting are persistent at the interface between the nonfullerene active layer and the printable top electrode (PEDOT:PSS). In this work, efficient all-solution-processed NF organic solar cells (from the bottom substrate to the top electrode) are reported via the adoption of a layer of hydrogen molybdenum bronze (HXMoO3) between the active layer and the PEDOT:PSS. The dual functions of HXMoO3 include: 1) its deep Fermi level of −5.44 eV can effectively extract holes from the active layer; and 2) the wetting issues of the PEDOT:PSS on the hydrophobic surface of the NF active layer can be solved. Importantly, fine control of the HXMoO3 composition during the synthesis is critical in obtaining processing orthogonality between HXMoO3 and the PEDOT:PSS. Flexible all-solution-processed NF organic solar cells with power conversion efficiencies of 11.9% and 10.3% are obtained for solar cells with an area of 0.04 and 1 cm2, respectively. 相似文献
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Jianguo Sun Bin Li Long Hu Junjun Guo Xufeng Ling Xuliang Zhang Chi Zhang Xianxin Wu Hehe Huang Chenxu Han Xinfeng Liu Youyong Li Shujuan Huang Tom Wu Jianyu Yuan Wanli Ma 《Advanced materials (Deerfield Beach, Fla.)》2023,35(1):2206047
Solution processable semiconductors like organics and emerging lead halide perovskites (LHPs) are ideal candidates for photovoltaics combining high performance and flexibility with reduced manufacturing cost. Moreover, the study of hybrid semiconductors would lead to advanced structures and deep understanding that will propel this field even further. Herein, a novel device architecture involving block copolymer/perovskite hybrid bulk heterointerfaces is investigated, such a modification could enhance light absorption, create an energy level cascade, and provides a thin hydrophobic layer, thus enabling enhanced carrier generation, promoting energy transfer and preventing moisture invasion, respectively. The resulting hybrid block copolymer/perovskite solar cell exhibits a champion efficiency of 24.07% for 0.0725 cm2-sized devices and 21.44% for 1 cm2-sized devices, respectively, together with enhanced stability, which is among the highest reports of organic/perovskite hybrid devices. More importantly, this approach has been effectively extended to other LHPs with different chemical compositions like MAPbI3 and CsPbI3, which may shed light on the design of highly efficient block copolymer/perovskite hybrid materials and architectures that would overcome current limitations for realistic application exploration. 相似文献
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Solar Cells: Understanding the Charge‐Transfer State and Singlet Exciton Emission from Solution‐Processed Small‐Molecule Organic Solar Cells (Adv. Mater. 43/2014) 下载免费PDF全文
Niva A. Ran Martijn Kuik John A. Love Christopher M. Proctor Ikuhiro Nagao Guillermo C. Bazan Thuc‐Quyen Nguyen 《Advanced materials (Deerfield Beach, Fla.)》2014,26(43):7281-7281
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