...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & environmental science >Device physics of back-contact perovskite solar cells
【24h】

Device physics of back-contact perovskite solar cells

机译：后触电钙钛矿太阳能电池的设备物理学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Back-contact perovskite solar cells (PSCs) are a promising candidate to further increase power conversion efficiency (PCE) and have been the subject of many investigations. However their full potential has not been achieved due to a lack of a complete understanding of their operation from a device physics perspective. In this study, a detailed photoelectrical model for back-contact PSCs is developed by coupling a drift-diffusion description of a free charge transport model with ion migration currents and emitted-carrier generation resulting from photon recycling. By studying the influence of relevant electrical parameters, the interplay between charge generation, transport and recombination is revealed to further clarify the design principles based on devices with a back-contact structure. Although devices featuring the back-contact structure exhibit sensitivity to electrical parameters, a high PCE exceeding 25% is predicted if the interface passivation and perovskite film quality can be well controlled. Different conduction band and valence band offsets offering various screening opportunities for functional materials with high efficiencies are introduced. Additionally, the simulated results revealed that mobile ions degrade the device performance if the average ion concentration exceeds 10(16)cm(-3). Furthermore, we point out that photon recycling can effectively compensate for radiative recombination, thereby resulting in an improved open circuit voltage. The results provide a new understanding of the carrier transport dynamics, ion migration, and photon recycling effects for the back-contact structure, which can be applied for a systematic improvement in the design of high efficiency PSCs.
机译：Back-Contact Perovskite太阳能电池（PSC）是一个有前途的候选者，以进一步提高功率转换效率（PCE），并且是许多调查的主题。然而，由于缺乏从设备物理角度缺乏完全了解他们的操作，因此无法实现其全部潜力。在该研究中，通过耦合具有离子迁移电流的游离电荷传输模型和由光子再循环产生的发射载体产生来开发用于背触电PSC的详细光电模型。通过研究相关电气参数的影响，揭示了充电，运输和重组之间的相互作用，以进一步阐明基于具有背接触结构的装置的设计原理。虽然具有背面接触结构的器件具有对电气参数的敏感性，但是预测高PCE超过25％，如果接口钝化和钙耐胶片质量可以很好地控制。介绍了不同的传导频段和价带偏移，为具有高效率的功能材料提供各种筛选机会。另外，如果平均离子浓度超过10（16）厘米（-3），则模拟结果显示移动离子降低器件性能。此外，我们指出光子回收可以有效地补偿辐射重组，从而导致改善的开路电压。结果提供了对背接触结构的载波运输动力学，离子迁移和光子回收效果的新了解，这可以应用于高效PSC设计的系统改进。

著录项

  • 来源
    《Energy & environmental science》 |2020年第6期|1753-1765|共13页
  • 作者

    Yang Zhenhai; Yang Weichuang; Yang Xi; Greer J. C.; Sheng Jiang; Yan Baojie; Ye Jichun;

  • 作者单位

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China|Univ Nottingham Fac Sci & Engn Dept Elect & Elect Engn Ningbo 315100 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

    Univ Nottingham Fac Sci & Engn Dept Elect & Elect Engn Ningbo 315100 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号