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首页> 外文期刊>Chemical Society Reviews >Photoexcited carrier dynamics in colloidal quantum dot solar cells: insights into individual quantum dots, quantum dot solid films and devices
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Photoexcited carrier dynamics in colloidal quantum dot solar cells: insights into individual quantum dots, quantum dot solid films and devices

机译：胶体量子点太阳能电池中的运动型载体动态：洞察单个量子点，量子点固体薄膜和装置

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摘要

The certified power conversion efficiency (PCE) record of colloidal quantum dot solar cells (QDSCs) has considerably improved from below 4% to 16.6% in the last few years. However, the record PCE value of QDSCs is still substantially lower than the theoretical efficiency. So far, there have been several reviews on recent and significant achievements in QDSCs, but reviews on photoexcited carrier dynamics in QDSCs are scarce. The photovoltaic performances of QDSCs are still limited by the photovoltage, photocurrent and fill factor that are mainly determined by the photoexcited carrier dynamics, including carrier (or exciton) generation, carrier extraction or transfer, and the carrier recombination process, in the devices. In this review, the photoexcited carrier dynamics in the whole QDSCs, originating from individual quantum dots (QDs) to the entire device as well as the characterization methods used for analyzing the photoexcited carrier dynamics are summarized and discussed. The recent research including photoexcited multiple exciton generation (MEG), hot electron extraction, and carrier transfer between adjacent QDs, as well as carrier injection and recombination at each interface of QDSCs are discussed in detail herein. The influence of photoexcited carrier dynamics on the physiochemical properties of QDs and photovoltaic performances of QDSC devices is also discussed.
机译：胶体量子点太阳能电池（QDSC）的认证功率转换效率（PCE）记录在过去几年中从低于4％至16.6％的情况下大大提高到16.6％。但是，QDSC的记录PCE值仍然大大低于理论效率。到目前为止，有几种关于QDSC的近期和重大成就的审查，但QDSCS中的光孔型载体动态的评论是稀缺的。 QDSCS的光伏性能仍然受到光透过的光电电压，光电流和填充因子的限制，这些光电流和填充因子主要由光透镜的载体动力学确定，包括在装置中的载体（或激子）产生，载流子提取或转移和载体复合过程。在本次审查中，总结了从单个QDSC中的光相错的载波动态到整个设备以及用于分析光屏蔽的载体动态的表征方法，并讨论。最近的研究包括相邻QDS之间的相互作用的多个激子产生（MEG），热电子提取和载体转移，以及在QDSC的每个界面处的载体注射和重组。还讨论了光屏蔽载体动力学对QDS和QDSC器件的光伏性能的生理化学特性的影响。

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  • 来源
    《Chemical Society Reviews》 |2020年第1期|共36页
  • 作者

    Zhang Yaohong; Wu Guohua; Liu Feng; Ding Chao; Zou Zhigang; Shen Qing;

  • 作者单位

    Univ Electrocommun Fac Informat &

    Engn Tokyo 1828585 Japan;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Xian 710119 Peoples R China;

    Univ Electrocommun Fac Informat &

    Engn Tokyo 1828585 Japan;

    Univ Electrocommun Fac Informat &

    Engn Tokyo 1828585 Japan;

    Nanjing Univ Ecomat &

    Renewable Energy Res Ctr Jiangsu Key Lab Nano Technol Natl Lab Solid State Microstruct Nanjing 210093 Peoples R China;

    Univ Electrocommun Fac Informat &

    Engn Tokyo 1828585 Japan;

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  • 正文语种 eng
  • 中图分类 化学;
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