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硅异质结(SHJ)太阳能电池是目前光伏产业中的重要组成部分,其由于具有高开路电压(Voc)等优点而引起了广泛的关注。在硅异质结太阳能电池中,透明导电氧化物(TCO)薄膜层的光学性能和电学性能分别影响着电池的短路电流(Jsc)、填充因子(FF),进而影响电池的转换效率。近年来,SHJ电池中TCO层的研究主要集中于掺杂的In2O3和ZnO体系。本文从硅异质结太阳能电池的不同结构出发,概述了TCO薄膜的光电性能(透过率、禁带宽度、方块电阻、载流子浓度、迁移率和功函数)以及与相邻层的接触对电池性能的影响,介绍了不同体系的透明导电氧化物薄膜在硅异质结太阳能电池中的应用及研究现状,并展望其未来的发展趋势。 相似文献
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晶体硅太阳电池是目前光伏市场的主流产品,其又可分为多晶硅电池和单晶硅(c-Si)电池。目前,多晶硅电池成本较低,市场份额较大,但其效率较低;单晶硅电池成本相对偏高,但其效率更高,市场份额小于多晶硅电池。随着硅材料和硅片切割技术的进步,单晶硅片的成本持续下降,且未来市场对高效率的高端光伏产品需求日益增长。因此,高效率的单晶硅电池将受到更多的关注。为进一步提高单晶硅太阳电池的效率,近几年的研究工作主要集中于提高硅片质量来降低体缺陷,寻找新型钝化材料来降低表面和界面缺陷,开发先进的减反技术(新型的绒面陷光结构和材料)以提高光的利用率,引入低电阻金属化技术降低串联电阻,优化PN结制备技术以及器件结构等。2014年至今,单晶硅太阳电池的转换效率得到连续突破。目前,最高效率是日本Kaneka公司创造的26.6%,其他效率达到或者超过25%的晶硅电池包括钝化发射极背面局部场接触(PERL)电池、交叉指式背接触(IBC)电池、硅异质结(SHJ)电池、交叉指式背接触异质结(HBC)电池、隧穿氧化层钝化接触(TOPCon)电池、多晶硅氧化物选择钝化接触(POLO)电池等。分析这些典型电池的关键技术可以发现,栅线电极与c-Si的金属-半导体接触复合成为影响电池效率的关键因素。为减小这些复合,一方面通过电池背面局部开孔来减小金属与c-Si直接接触的面积,包括钝化发射极背场点接触(PERC)、PERL、钝化发射极和背面全扩散(PERT)等电池。另一方面则是开发既能够实现优异的表面钝化,同时又无需开孔便可分离与输运载流子的新型载流子选择性钝化接触技术,如SHJ电池、TOPCon电池等。此外,采用交叉指式背接触技术与其他电池结构结合则是最大限度提高光利用率的必然选择,包括IBC电池和HBC电池。本文介绍了当前国际上转化效率达到或超过25%的典型高效单晶硅太阳电池,分别对其器件结构、核心工艺、关键材料等进行了分析,在总结这些高效单晶硅太阳电池各自特点的基础上对该领域的发展前景进行了展望。 相似文献
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聚苯胺太阳电池的研究 总被引:4,自引:0,他引:4
本文利用聚苯胺和聚苯胺复合材料与n型硅制备了有机p-n异质结太阳电池,对电池的伏安特性、开路电压、短路电流和稳定性进行了表征和分析,对电池的机理进行了探讨,分析了影响聚苯胺p-n异质结电池特性的各种因素,得到了一些很有意义的结果. 相似文献
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Do-Hyung Kim Sung-Soo RyuDongwook Shin Jung-Han ShinJwa-Jin Jeong Hyeong-Jun KimHyo Sik Chang 《Materials Science and Engineering: B》2012,177(2):217-222
The dispensing printing was applied to fabricate the front electrodes of silicon solar cell. In this method, a micro channel nozzle and normal Ag paste were employed. The aspect ratio and line width of electrodes could be controlled by the process variables such as the inner diameter of nozzle, dispensing speed, discharge pressure, and the gap between wafer and nozzle. For the nozzle with the inner diameter of 50 μm, the line width and aspect ratio of electrode were under 90 μm and more than ∼0.2, respectively. When comparing the efficiency of solar cell prepared by conventional screen printing and the dispensing printing, the latter exhibited 19.1%, which is 0.8% absolute higher than the former even with the same Ag paste. This is because the electrode by dispensing printing has uniform aspect ratio and narrow line width over the length of electrode. 相似文献
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数字印刷技术的发展及现状 总被引:2,自引:0,他引:2
随着计算机技术、喷墨打印技术、高精度喷涂装置、超细染料制备等技术、装备和原料的不断发展、更新,明显地加速了数字印刷的工业化和实用化。在2008年德鲁巴国际印展会(Drupa)上,数字印刷成为最大的亮点,而喷墨数字印刷更成为亮点中的亮点。本文较全面地阐述了数字印刷和数字印刷技术,重点介绍了喷墨数字印刷技术和各种品牌的数字印刷机,并对数字印刷技术的发展前景进行了展望。 相似文献
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Lei Zhu Wenkai Zhong Chaoqun Qiu Bosai Lyu Zichun Zhou Ming Zhang Jingnan Song Jinqiu Xu Jing Wang Jazib Ali Wei Feng Zhiwen Shi Xiaodan Gu Lei Ying Yongming Zhang Feng Liu 《Advanced materials (Deerfield Beach, Fla.)》2019,31(41)
All‐polymer solar cells (all‐PSCs) exhibit excellent stability and readily tunable ink viscosity, and are therefore especially suitable for printing preparation of large‐scale devices. At present, the efficiency of state‐of‐the‐art all‐PSCs fabricated by the spin‐coating method has exceeded 11%, laying the foundation for the preparation and practical utilization of printed devices. A high power conversion efficiency (PCE) of 11.76% is achieved based on PTzBI‐Si:N2200 all‐PSCs processing with 2‐methyltetrahydrofuran (MTHF, an environmentally friendly solvent) and preparation of active layers by slot die printing, which is the top efficient for all‐PSCs. Conversely, the PCE of devices processed by high‐boiling point chlorobenzene is less than 2%. Through the study of film formation kinetics, volatile solvents can freeze the morphology in a short time, and a more rigid conformation with strong intermolecular interaction combined with the solubility limit of PTzBI‐Si and N2200 in MTHF results in the formation of a fibril network in the bulk heterojunction. The multilength scaled morphology ensures fast transfer of carriers and facilitates exciton separation, which boosts carrier mobility and current density, thus improving the device performance. These results are of great significance for large‐scale printing fabrication of high‐efficiency all‐PSCs in the future. 相似文献
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Xiangchuan Meng Lin Zhang Yuanpeng Xie Xiaotian Hu Zhi Xing Zengqi Huang Cong Liu Licheng Tan Weihua Zhou Yanming Sun Wei Ma Yiwang Chen 《Advanced materials (Deerfield Beach, Fla.)》2019,31(41)
The blossoming of organic solar cells (OSCs) has triggered enormous commercial applications, due to their high‐efficiency, light weight, and flexibility. However, the lab‐to‐manufacturing translation of the praisable performance from lab‐scale devices to industrial‐scale modules is still the Achilles' heel of OSCs. In fact, it is urgent to explore the mechanism of morphological evolution in the bulk heterojunction (BHJ) with different coating/printing methods. Here, a general approach to upscale flexible organic photovoltaics to module scale without obvious efficiency loss is demonstrated. The shear impulse during the coating/printing process is first applied to control the morphology evolution of the BHJ layer for both fullerene and nonfullerene acceptor systems. A quantitative transformation factor of shear impulse between slot‐die printing and spin‐coating is detected. Compelling results of morphological evolution, molecular stacking, and coarse‐grained molecular simulation verify the validity of the impulse translation. Accordingly, the efficiency of flexible devices via slot‐die printing achieves 9.10% for PTB7‐Th:PC71BM and 9.77% for PBDB‐T:ITIC based on 1.04 cm2 . Furthermore, 15 cm2 flexible modules with effective efficiency up to 7.58% (PTB7‐Th:PC71BM) and 8.90% (PBDB‐T:ITIC) are demonstrated with satisfying mechanical flexibility and operating stability. More importantly, this work outlines the shear impulse translation for organic printing electronics. 相似文献
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数字印刷与传统印刷之博弈 总被引:1,自引:1,他引:0
近年来印刷新科技领域出现突飞猛进的发展,大大改变了传统印刷技术的面貌.特别在印前领域,数字化制版取代了模拟方式,简化了传统制版的工序.印刷多色长版作业时,成本低、速度快;胶印和凹印的印刷分辨率高、质量好;作业准备时间短,对市场能够作出快速反应,作业生产周期短;不难发现,越来越多的印刷企业同时采用数字印刷和模拟印刷的方法来满足客户的需求,形成了一种非常良好的互补生产模式. 相似文献
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基于硅基太阳电池栅极多次喷印优化技术的研究 总被引:2,自引:2,他引:0
以不增加印刷材料成本和栅线电阻值为前提,提出了采用变墨滴体积多次喷印工艺方案。采用该方案印刷硅基太阳电池,主要通过减小太阳电池栅线的线宽,来达到提高太阳电池能量转换效率的目的。 相似文献
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喷墨印刷技术是一种非接触式、工艺简单、无版数字化的印刷技术,越来越多的研究者将该技术应用到制备电化学生物传感器中,以应对电化学生物传感器因向数字化、智能化等方向发展而对其制备技术提出的更高要求。因此,在对喷墨打印技术制备电化学生物传感器原理与优劣进行分析的基础上,依据其发展历程对近年来的研究进行了总结与分析,探讨了其在制作过程中存在的主要问题,即对油墨的要求较高。寻找合适的方法解决喷墨打印金属电极的电导率问题,研究导电聚合物的浓度、层数等对成膜质量和传感器响应程度的影响及利用喷墨打印技术制备整个传感器的研究将是今后本领域的研究重点。 相似文献
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The rapid progression of portable and wearable electronics has necessitated the development of high-performing, miniaturized energy-storage devices with flexible form factors and high energy and power delivery. Printed micro-supercapacitors (MSCs), with in-plane interdigital configurations, is touted as a promising choice to fulfill these requirements. New printing technologies can assemble MSCs with fiscal and environmental benefits, large form factors, and at high throughputs, qualities not afforded with conventional microfabrication technologies. Here, recent progress in the preparation of functional ink systems for wearable MSCs, encompassing electrode materials, conductor materials, and electrolytes, is presented. First, a comprehensive background of the fundamentals of printing technology is introduced, with discussions focusing on methods of improving ink functionality while simultaneously retaining good printability. Second, various printing techniques to ensure manufacturable scaling of wearable MSCs with high areal electrochemical performance and small footprint are explored. Within the scope of these two topics, various issues that hinder the full materialization of widespread adoption of printed MSC and next steps to overcome these issues are discussed. Further deep dives in scientific and technical challenges are also presented, including limited functionality of the inks, low printing resolution, overlay accuracy, and complex encapsulation. 相似文献